Answer:
I love algebra anyways
The ans is in the picture with the steps how i got it
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
look at pic 10 pts will mark brainilest
Answer:
For part one...
you will multiply 4.5 by 3 to get 13.5 .
For part two,
you will multiply 3m by 4 to get 12.
(: I hope this helps! BRAINLIEST is appreciated to get to virtuoso :)
So can y’all help me please this is due at 5pm
Answer:
Variable terms: 4a and 6a
Constant terms: 4 and 11
Step-by-step explanation:
A constant term is one that is NOT multiplied by any variables.
At this level of math, think of constants as terms that are only numbers.
(for example: 1, 68.9, -42, etc.)
Note that a term in « a + bi » form can also be a constant.
A variable term is a one that IS multiplied by a variable.
(for example x, -3y, 8z, etc.)
In question 1, the variable terms are:
4a and 6a because they are multiplied by the variable a
The constant terms are:
4 and 11 because they are simply integers
Note that the constant terms could also be written as -4 and -11 depending on how the operations are viewed (subtracting vs adding a negative)
some please help asap i only have 5 minutes.
PLEASE
The value of x is -20 and y value is 10/3
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given two equations are
x/6-y/5=-4...(1)
x/4-y/6= -2...(2)
Multiply 1 with 1/2
x/12-y/10=-2...(3)
Multiply 2 with 1/3
x/12-y/18=-2/3...(4)
Now subtract 4 from 3
x/12-y/10-x/12+y/18=-2+2/3
-y/10+y/18=-4/3
y(1/18-1/10)=-4/3
y(5-9/90)=-4/3
y(-4/10)=-4/3
-y/10=-1/3
y=10/3
So value of y is 10/3
Now substitute y in 1
x/6-10/15=-4
x/6=-4+10/15
x/6=(-60+10)/15
x/6=-50/15
x=-300/15
x=-20
Hence the value of x is -20 and y value is 10/3
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If a person is randomly selected, find the probability that his or her birthday is not on New Year's Day. Ignore leap years.
Answer:
Ignoring leap years, May has 31 days, a year has 365 days. 334 days of the year are NOT in May so the probability of a birthday not being in May = 334/365 = approximately 91.5%
Step-by-step explanation:
The probability of event A which represents that the man's birthday is not on New Year's Day is 0.99.
Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur. Mathematically -
P(A) = n(A)/n(S)
Given is a person who is randomly selected.
Assume that Event A represents that the man's birthday is not on New Year's Day.
Total number of days in a year = n(S) = 365
Total number of days not on New Year's Day = n(A) = 364
Therefore, the probability that the man's birthday is in May will be -
P(A) = n(A)/n(S)
P(A) = 364/365
P(A) = 0.99
Therefore, the probability of event A which represents that the man's birthday is not on New Year's Day is 0.99.
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Please help!!
One thousand people stood in a very large circle. Each person wore a sign on their back
with a numeral from 1 to 1000, in a clockwise sequence. They began counting off. The
first person, person A, said "one-in," and remained in the circle. Person B, the person to
the left of A, said "two-out," and left the circle. The person to the left of B, person C, said
"three-in," and remained in the circle. The person to the left, person D, said "four-out,"
and stepped out of the circle.
So it continued with each person wearing an odd number saying "in," and remaining in
the circle, and with every person wearing an even numeral leaving the circle.
It was easy to visualize who remained in the circle when the count off made it all the way
around back to the first person. Since the last person said "one thousand-out," person A,
the first person, said "one-in," and stayed in, while person C, now the next person, said
"three-out," and left the circle. This process would keep going on and on until only one
person was left in the circle.
Who was the last person standing?
The person who gets to say the last number, 1000, will be Person 6.
Here, we have,
In this scenario, we have seven people sitting in a circle and counting clockwise. The goal is to determine which person will say the last number when they reach 1000. To solve this problem, we can use the concept of modular arithmetic.
When dividing 1000 by the total number of people (7), we get a quotient of 142 and a remainder of 6 (1000 = 142*7 + 6). This means that after completing 142 full rounds of counting, the group will have reached the number 994 (142*7). In the next round, they will continue counting from 995 to 1000.
Since the remainder is 6, it indicates that the last number (1000) will be spoken by the person sitting 6 positions after the first person in the circle (clockwise). In other words, Person 1 says numbers 1, 8, 15, and so on, while Person 6 will say 6, 13, 20, and so on.
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complete question:
10) Seven people sit in a circle and begin counting clockwise starting from 1.Each person in the group is keeping track of the numbers she is saying (e.g. 1,8, 15...) If they continue in this way, counting on and on, until they reach 1000, which person will get to say the last number
how do I solve this?
Its g is increasing
I guess you could just plug in 0, 1 and -1 and graph it.
Of(x) = x² - 6x-1-
Mark thic and return
24
-10-8-8-22-
-8
-8
-10
2
B
8 10 x
What is the axis of symmetry
The axis of symmetry of the function f(x) = x² - 6x-1 is equal to 3.
How to determine the axis of symmetry of a quadratic function?In Mathematics, the axis of symmetry of a quadratic function can be calculated by using this mathematical equation:
Axis of symmetry, Xmin = -b/2a
Where:
a and b represents the coefficients of the first and second term in the quadratic function.
By substituting the parameters, we have the following:
Axis of symmetry, Xmin = -b/2a
Axis of symmetry, Xmin = -(-6)/2(1)
Axis of symmetry, Xmin = 6/2
Axis of symmetry, Xmin = 3.
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Solve the system by substitution 2x+2y= 50
y = 4x
Answer:
(5,20)
Step-by-step explanation:
2x + 2(4x) = 50
2x + 8x = 50
10x = 50
10x/10 = 50/10x
x = 5
2(5) + 2y = 50
10+ 2y = 50
-10. -10
---------------
2y = 40
2y/2 = 40/2
y = 20
Frank has 63 baseball and hockey cards. Three times the number of baseball cards minus four times the number of hockey cards is 126. How many of each kind of card does he own? Frank has Blank 1 baseball cards and Blank 2 hockey cards.
Therefore, Frank has 54 baseball cards and 9 hockey cards.
What is equation?In mathematics, an equation is a statement that asserts the equality of two expressions. It consists of two sides, left-hand side (LHS) and right-hand side (RHS), separated by an equals sign (=). The expressions on either side of the equals sign can contain numbers, variables, constants, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. The goal of solving an equation is to find the value(s) of the variable(s) that make the equation true.
Here,
Let's use algebra to solve the problem.
Let B be the number of baseball cards that Frank has, and let H be the number of hockey cards that he has. Then we have two equations:
B + H = 63 (the total number of cards is 63)
3B - 4H = 126 (three times the number of baseball cards minus four times the number of hockey cards is 126)
We can use the first equation to solve for one of the variables in terms of the other. For example, we can solve for H:
H = 63 - B
Substitute this expression for H in the second equation:
3B - 4(63 - B) = 126
Simplify and solve for B:
3B - 252 + 4B = 126
7B = 378
B = 54
Now we can use either of the two equations to solve for H. Let's use the first one:
B + H = 63
54 + H = 63
H = 9
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A track runner ran for 15 minutes, stretched in place for 15 minutes, ran for another 20 minutes, and then rested in place for 10 minutes. Which graph describes the relationship between runner's total distance and time? graph with the x axis labeled time in hours and the y axis labeled total distance in miles, with a line segment from 0 comma 0 to 0.25 comma 1.25, a horizontal line segment from 0.25 comma 1.25 to 0.5 comma 1.25, a line segment from 0.5 comma 1.25 to 0.8 comma 2.4, and a horizontal line segment from 0.8 comma 2.4 to 1 comma 2.4 graph with the x axis labeled time in hours and the y axis labeled total distance in miles, with a line segment from 0 comma 0 to 0.25 comma 1.25, a line segment from 0.25 comma 1.25 to 0.5 comma 1.75, a line segment from 0.5 comma 1.75 to 0.8 comma 2.95, and a horizontal line segment from 0.8 comma 2.95 to 1 comma 2.95 graph with the x axis labeled time in hours and the y axis labeled total distance in miles, with a line segment from 0 comma 0 to 0.25 comma 1.25, a horizontal line segment from 0.25 comma 1.25 to 0.5 comma 1.25, a line segment from 0.5 comma 1.25 to 0.8 comma 0.1, and a horizontal line segment from 0.8 comma 0.1 to 1 comma 0.1 graph with the x axis labeled time in hours and the y axis labeled total distance in miles, with a line segment from 0 comma 0 to 0.25 comma 1.25, a line segment from 0.25 comma 1.25 to 0.5 comma 1.75, a line segment from 0.5 comma 1.75 to 0.8 comma 2.95, and a line segment from 0.8 comma 2.95 to 1 comma 3.15
the graph shows a line segment from (0,0) to (0.25,1.25) to represent the first running period, followed by a horizontal line segment from (0.25,1.25) to (0.5,1.25) to represent the stretching time, then a line segment from (0.5,1.25) to (0.8,2.4) to represent the second running period, followed by another horizontal line segment from (0.8,2.4) to (1,2.4) to represent the resting time.
What is the line segment of the graph?
In geometry, a line segment is part of a straight line that is bounded by two distinct end points and contains every point on the line that is between its endpoints.
The graph that describes the relationship between the runner's total distance & time is:
graph with the x-axis labeled time in hours and the y-axis labeled total distance in miles, with a line segment from 0,0 to 0.25,1.25, a horizontal line segment from 0.25,1.25 to 0.5,1.25, a line segment from 0.5,1.25 to 0.8,2.4, and a horizontal line segment from 0.8,2.4 to 1,2.4.
The runner ran for a total of 35 minutes, which is 0.5833 hours (15 minutes + 20 minutes). During this time, the runner covered a distance of 2.4 miles (45 mph * 0.25 hours + 60 mph * 0.3333 hours).
After adding the time spent stretching and resting, which is 0.5 hours, the total time is 1 hour, and the total distance covered is still 2.4 miles since the runner did not move during the stretching and resting time.
Therefore, the graph shows a line segment from (0,0) to (0.25,1.25) to represent the first running period, followed by a horizontal line segment from (0.25,1.25) to (0.5,1.25) to represent the stretching time, then a line segment from (0.5,1.25) to (0.8,2.4) to represent the second running period, followed by another horizontal line segment from (0.8,2.4) to (1,2.4) to represent the resting time.
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Answer:
i might be wrong but hope this helps
Step-by-step explanation:
the graph shows a line segment from (0,0) to (0.25,1.25) to represent the first running period, followed by a horizontal line segment from (0.25,1.25) to (0.5,1.25) to represent the stretching time, then a line segment from (0.5,1.25) to (0.8,2.4) to represent the second running period, followed by another horizontal line segment from (0.8,2.4) to (1,2.4) to represent the resting time.
What is the line segment of the graph?
In geometry, a line segment is part of a straight line that is bounded by two distinct end points and contains every point on the line that is between its endpoints.
The graph that describes the relationship between the runner's total distance & time is:
graph with the x-axis labeled time in hours and the y-axis labeled total distance in miles, with a line segment from 0,0 to 0.25,1.25, a horizontal line segment from 0.25,1.25 to 0.5,1.25, a line segment from 0.5,1.25 to 0.8,2.4, and a horizontal line segment from 0.8,2.4 to 1,2.4.
The runner ran for a total of 35 minutes, which is 0.5833 hours (15 minutes + 20 minutes). During this time, the runner covered a distance of 2.4 miles (45 mph * 0.25 hours + 60 mph * 0.3333 hours).
After adding the time spent stretching and resting, which is 0.5 hours, the total time is 1 hour, and the total distance covered is still 2.4 miles since the runner did not move during the stretching and resting time.
Therefore, the graph shows a line segment from (0,0) to (0.25,1.25) to represent the first running period, followed by a horizontal line segment from (0.25,1.25) to (0.5,1.25) to represent the stretching time, then a line segment from (0.5,1.25) to (0.8,2.4) to represent the second running period, followed by another horizontal line segment from (0.8,2.4) to (1,2.4) to represent the resting time.
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help me please
dont even need a full explanation
Can anyone help me with this and explain?
At a currency exchange rate, 3 U.S dollars can be exchanged for 5 Japanese Yin. How many U.S dollars will you receive for 1 Japanese Yin?
on a field trip, there are `3` chaperones for every `20` students. there are `92` total people on the trip.
There are 12 chaperones in total.
In molecular biology, molecular chaperones are proteins that help big proteins or macromolecular protein complexes fold or unfold conformationally. There are different groups of molecular chaperones, all of which have the same purpose: to help big proteins fold properly during or after synthesis as well as following partial denaturation. Protein translocation for proteolysis involves chaperones as well.
The first molecular chaperones to be identified are an assembly-type of chaperones that help nucleosomes form from folded histones and DNA.
Since heat stress increases the propensity for protein aggregation, one of the main roles of molecular chaperones is to prevent the accumulation of misfolded proteins. As a result, many chaperone proteins are categorized as heat shock proteins.
Chaperones and students combined: 3 + 20 = 23
by the number of individuals in total:
92 / 23 = 4
Divide that sum by the proportional number of chaperones:
4 x 3 = 12
There are 12 chaperones in total.
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please help i just need to get this done.
The equation of the line in slope-point form, slope-intercept form, and standard form are y = -100x + 1250, y - 1250 = -100(x-0) and 100x + y = 1250 respectively
How to write the equation of a line in point-slope form?
The equation of a line in point-slope form is given as y − y 1 = m ( x − x 1),
where ( x 1, y1 ) is the point given and m is the slope
m = y2-y1 / x2-x1, where x1 = 0, y1 = 1,250 and x2 = 5, y2 = 750
m = 750-1250 / 5-0
m = -500/5 = -100
Thus, the slope-point form:
y − y 1 = m ( x − x 1 )
y - 1250 = -100(x-0)
The equation of a line in slope-intercept form is given as y = mx+c,
where (x, y) is the point given, m is the slope and c is the y-intercept
where x1 = 0, y1 = 1,250 and m = -100
y = mx + c
1250 = -100(0) + c
c = 1250
Thus, the equation in slope-intercept form is:
y = -100x + 1250
The equation of a line in standard form is given as ax + by = c, where a, b, c are real numbers
Rewrite y = -100x + 1250. Thus, the equation in standard form is:
100x + y = 1250
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what is 6(-5n + 7) simplified?
Answer:
-30n+42
Step-by-step explanation:
You have to use distributive property.
Multiply 6 with -5n which is -30n. Then, Multiply 6 with 7 which is 42. Since, 5n is negative the product is also negative, and since 7 is positive the product is positive. Therefore you will get, -30n+42.
I hope this helps!
Could I get brainliest? ✨
The simplified form of 6(-5n + 7) is -30n + 42.
To simplify the expression 6(-5n + 7), we apply the distributive property. The distributive property states that when we multiply a number outside the parentheses by an expression inside the parentheses, we must multiply it by each term inside the parentheses.
In this case, we have 6 multiplied by the expression (-5n + 7).
Multiplying 6 by -5n gives us -30n, and multiplying 6 by 7 gives us 42.
So, combining these results, we get -30n + 42.
This simplified expression, -30n + 42, cannot be further simplified because there are no like terms to combine.
Therefore, 6(-5n + 7) simplifies to -30n + 42.
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Complete the table. Answer should be T or F.
P Q
T F P V Q P ^ Q P -> Q -P -Q -P V -Q -P -> Q -P -> -Q P <-> Q
F T P V Q P ^ Q P -> Q -P -Q -P V -Q -P -> Q -P -> -Q P <-> Q
P Q P V Q P ^ Q P -> Q -P -Q -P V -Q -P -> Q -P -> -Q P <-> Q
T T T T T F F F F F T T
F T T F F T T T T T F F
P F T F F T T T T T F F
-P T T F F T T T T T F F
-Q T T T T F T F F F T T
-P V -Q T T F F T T T T T F
-P -> Q T T F F T T T T T F
-P -> -Q T T F F T T T T T F
P <-> Q T T T T F T T T T F
Here is a more detailed explanation of how I filled out the table:
P | Q : This column is simply the truth value of P and Q. If P and Q are both true, then the entry in this column is T. If P is true and Q is false, then the entry in this column is F. If P is false and Q is true, then the entry in this column is F. And if P and Q are both false, then the entry in this column is T.
P V Q : This column is the truth value of P or Q. If P is true, then the entry in this column is T. If Q is true, then the entry in this column is T. And if P and Q are both false, then the entry in this column is F.
P ^ Q : This column is the truth value of P and Q. If P and Q are both true, then the entry in this column is T. And if P and Q are both false, then the entry in this column is F.
P -> Q : This column is the truth value of P implies Q. If P is true and Q is false, then the entry in this column is F. And if P is false or Q is true, then the entry in this column is T.
-P : This column is the negation of P. If P is true, then the entry in this column is F. And if P is false, then the entry in this column is T.
-Q : This column is the negation of Q. If Q is true, then the entry in this column is F. And if Q is false, then the entry in this column is T.
-P V -Q : This column is the truth value of not P or not Q. If P and Q are both true, then the entry in this column is F. If P and Q are both false, then the entry in this column is T. And if P or Q is true, then the entry in this column is T.
-P -> Q : This column is the truth value of not P implies Q. If P is true and Q is false, then the entry in this column is T. And if P is false or Q is true, then the entry in this column is F.
-P -> -Q : This column is the truth value of not P implies not Q. If P and Q are both true, then the entry in this column is T. If P is false or Q is false, then the entry in this column is T. And if P is true and Q is true, then the entry in this column is F.
P <-> Q : This column is the truth value of P if and only if Q. If P and Q are both true or P and Q are both false, then the entry in this column is T. And if P and Q have different truth values, then the entry in this column is F.
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how many eighths make a quarter
Answer:
Two Eighths
Step-by-step explanation:
One eighth is one part of eight equal sections. Two eighths is one quarter
I need this answer fast please and thank you
Answer:
1-nonlinear it is not consistant
2- a increasing, b constant, c decreasing
3- 'a' walking away from hole, 'b' rests, 'c' goes back to hole (b could also be gather, as in food)
4- 8cm per second
work 16cm/2sec=8cm/1sec
Step-by-step explanation:
A restaurant manager recorded the number of people in different age groups who attended their food festival. They created the following histogram:
Histogram with title Food Festival Participants, horizontal axis labeled Age Group (year) with bins 0 to 19, 20 to 39, 40 to 59, and 60 to 79, and vertical axis labeled Number of People with values from 0 to 60 at intervals of 10. The first bin goes to 20, the second goes to 40, the third goes to 60, and the last goes to 50.
What percentage of the participants are ages 40 to 59? Round to the nearest whole percent.
20%
35%
60%
100%
According to the histogram, the percentage of participants aged 40 to 59, who attended the restaurant's food festival, is 35%.
What is a histogram?A histogram approximately represents a distribution of grouped data with numerical values.
A histogram uses rectangular bars to show the frequency of data items in successive numerical intervals of equal sizes.
Age Group (year) Number of People
0 to 19 20
20 to 39 40
40 to 59 60
60 to 79 50
Total 170
Percentage of ages 40 to 59 = 60/170 x 100 = 35.29%
Thus, using the histogram, we can assure the restaurant manager that 35% of the festival participants are between 40 and 59 years old.
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.
क. गाय
(D द्रव्यवा चक संज्ञा का उदाहरण कौन सा है?
ख. दूध क. गाय
ग. पंखा
घ. सेना।
कौन सा शब्द समूहवाचक संज्ञा नहीं हैं?
फ. भीड़ख ख. कक्षा
ग. सेना
घ. चिड़िया ।
6 ताजमहल आगरा में स्थित है। रेखांकित शब्द की
संजा बताइए?
क. व्यक्तिवाचक संज्ञा ख. जातिवाचक संज्ञा ।
ग. भाववाचक संज्ञा घ. समूहवाचक संज्ञा ।
Answer:
I dont know how to read hindi can u pls translate it into English
Simplify: x^d • x ^18
Answer:
x^(d+18)
Step-by-step explanation:
using the law of indices
you must add the powers
Answer:
\( {x}^{d + 18} \)
Step-by-step explanation:
\(\sf{x^d.x^{18} }\) \(\sf{ x^{d+18} }\)y=mx+b example; y=mx+b calculator; writing linear equations in slope-intercept form answer key; write equation in slope intercept form calculator; standard form equation; slope-intercept form examples; point slope form calculator; how to find the y-intercept
1) The Point-Slope Formula (y – y1) = m(x – x1)
2) The Slope-Intercept Formula y = mx + b
linear equations in slope-intercept :
To determine the equation of a line, you may use two variations of the general form of a line.
These formulas are:
1) The Point-Slope Formula (y – y1) = m(x – x1)
2) The Slope-Intercept Formula y = mx + b
standard form equationThe standard form of a linear equation, also known as the “general form“, is:
ax+by=c
The letters aa, bb, and cc are all coefficients. When using standard form, aa, bb, and cc are all replaced with real numbers. The letter x represents the independent variable and the letter y represents the dependent variable.
A few notes on Standard Form:
The a term must be a positive integera ,b, and cc cannot be decimals or fractionshow to find the y-interceptLet us now determine the y-intercept. Remember, this is where the line crosses the y-axis and where x=0 To do so, we will substitute 0 for x
3y-5x=30
3y-5(0)=30
3y=30
y=10
Therefore, the y-intercept is at 10. This means the point (0,10) is on the graph.
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Dave receives a salary of $200 a week plus a commission of 10% of his weekly sales. An equation y = m x + b represents Dave’s weekly earnings. The y-intercept is Dave’s base salary. The slope of the line is his commission.
Write an equation representing Dave’s weekly earnings.
Answer:
y = 0.1x+200
Step-by-step explanation:
First, let's establish that:
x is independent
y is dependent
Basically, the value of y will depend on what x is.
The problem states that the slope of the line is Dave's comission, so since he makes 10% of comission, we can make the slope as 0.1x (mx)
The problem also states that the y intercept (b) is Dave's base salary, and earlier in the problem it states that his base salary is $200 a week. Therefore, b=200
now, the equation is:
y=0.1x+200
Hope this helps!
choose the multiples of 5 a. 7,12,17,22 b.10,25,45,60 c.14,23,32,41 d.9,14,19,24
Answer:
The multiples of 5 are (b.10,25,45,60)
here what one is right?
Answer:
B.
Step-by-step explanation:
Please help me understand this handwriting can some pls re write and label I DONT UNDERSTAND CURSIVE :(
Answer:
7:01
29%
Doyan of low
Shiman 1-R-1
Flous 1-1 Gambe 1-4-20
12 dual purpose
Martins 1-2-3 Flores 1-2, 1-3, 14
Gamba 2-1-5
Custand 1-4, 2-1
Conditions " humanitarian groups Salahiel 1-1-1, 1-1-2, 1-2-3 1-R-5, 2-L-2, 2-L-3, 2-14, 2-1-5, 2-RI
Flores 1-30
Munting 1-2-4
Gumbon 1-1-3 CDP 1-1-3
Status oppose ending 742 Montoya 1-1, 1-2, 1-3
federal courts challenge
Gamboa 1-R-2 Custom 1-7
CDP 1-L-36, 1-2-4
de Vogue 1-2-1, 2-1-5, 2-L-6
7 expulsions at boders
root causes textul Amer.
Cop 1-L-34, 1-1-2, 1-R-4
Border Report 1-2
CDP 1-R-2, 1-R-3 Montoya 1-8
Custarda 2-2
=
CLOSE
Hopes this helps :)
In the given Fig. PQR is a triangle, right angled at Q. If XY || QR, PQ = 6 cm, PY = 4 cm and PX : XQ = 1 : 2. Calculate the lengths of PR and QR.
Basic Proportionality Theorem (BPT): If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points then the other two sides are divided in the same ratio. This is also known as Thales theorem.
Given:
\(\angle Q= 90^\circ , XY \ || \ QR, PQ = 6 \ \text{cm}, PY = 4 \ \text{cm} \ \text{and} \ PX : XQ = 1 : 2\)
Since, \(XY \ || \ QR\),
\(PX/XQ = PY/YR\)
[ By Thales theorem (BPT)]
\(\dfrac{1}{2} = PY/YR\) \([PX : XQ = 1 : 2]\)
\(\dfrac{1}{2} = 4 /(PR - PY)\)
\([YR= PR - PY]\)
\(\dfrac{1}{2} = 4 /(PR - 4)\)
\(PR - 4 = 2 \times 4\)
\(PR - 4 = 8\)
\(PR = 8 +4\)
\(PR = 12 \ \text{cm}\)
In right \(\Delta PQR\),
\(PR^2 = PQ^2 + QR^2\)
[ By Pythagoras theorem]
\(12^2 = 6^2 + QR^2\) \([\text{Given} : PQ= 6 \ \text{cm}]\)
\(144 = 36 + QR^2\)
\(144 - 36 + QR^2\)
\(108= QR^2\)
\(QR =\sqrt{108} =\sqrt{3\times36} = 6\sqrt{3} \ \text{cm}\)
Hence, the lengths of PR and QR is 12 cm and \(6\sqrt{3}\) cm.
Suppose a parabola has an axis of symmetry at x = 6, a maximum height of 6 and also passes through the point (7, 5). Write the equation of the parabola in vertex form.
Answer:
\(y=-(x-6)^2+6\)
Step-by-step explanation:
Vertex Form:Vertex form of a parabola is expressed as: \(y=a(x-h)^2+k\)
(h, k) = vertex"a" determines vertical stretch/compression and directionIt's also important to note that the axis of symmetry is a vertical line which passes through vertex, so in this form, that axis of symmetry can be defined as such: \(x=h\)
So if we're given the axis of symmetry we know the x-coordinate of the vertex.
Solving the Problem:Since we're given the axis of symmetry to be: \(x=6\) then that means the x-coordinate of the axis of symmetry is six. Another important thing to note about the vertex is it's y-value is either a minimum or maximum depending on whether it's opening up or down. So when we're given the maximum height to be 6, that's the y-coordinate of the vertex.
So now we know the coordinates to the vertex: \((6, 6)\). Using this we can plug in some values into the vertex form: \(y=a(x-6)^2+6\), but we still don't know the "a" value in front (besides that it's negative). Luckily we're given a point on the equation! We can plug in the coordinates given: \((7, 5)\) into the vertex form as (x, y) to solve for the "a" value, so let's do that.
Original Equation:
\(y=a(x-6)^2+6\)
Passes through the point (7, 5), so substitute it for (x, y)
\(5=a(7-6)^2+6\)
Simplify inside parenthesis:
\(5=a(1)^2+6\)
Square the one:
\(5=a+6\)
Subtract 6 from both sides:
\(-1=a\)
So now let's plug this back into our equation: \(y=-1(x-6)^2+6\), although we don't have to explicitly put the one, and just put the negative sign which does the same thing: \(y=-(x-6)^2+6\)
NEED HELP ASAP a bag contains four green marbles,six white marbles, and ten red marbles. One marble is picked at random from the bag. What is the probability of picking a white marble?
Answer:
3/10
Step-by-step explanation:
add all the marbles together4+6+10
=20
probability of picking a white marble is6/20
=3/10