Answer:
A
Step-by-step explanation:
beacause Harry loves school so he go to school
What is the slope of the line through (-3, 3) and (-1, -1)?
Answer:
\(m=-2\)
Step-by-step explanation:
Slope Formula: \(m=\frac{y_2-y_1}{x_2-x_1}\)
Simply plug in the 2 coordinates into the slope formula to find slope m:
\(m=\frac{-1-3}{-1-(-3)}\)
\(m=\frac{-4}{-1+3}\)
\(m=\frac{-4}{2}\)
\(m=-2\)
write the english phrase as an algebraic expression. Let x represent the number
The english phrase "Seven less than four times a number" as an algebraic expression is 4x - 7
Writing the english phrase as an algebraic expressionFrom the question, we have the following parameters that can be used in our computation:
seven less than four times a number
Represent the number with x
So:
four times a number means 4x
So, we have
seven less than 4x
seven less than means - 7
So, we have
4x - 7
Hence, the english phrase as an algebraic expression is 4x - 7
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Complete question
write the english phrase as an algebraic expression. Let x represent the number
Seven less than four times a number
Factor out the greatest common factor from each group.
(2r² +5r) + (14r +35) = __+__
(Type the terms of your expression in the same order as they appear in the original expression.)
Answer:
r(2r + 5) + 7(2r + 5)
Step-by-step explanation:
In the first bracket the common term in both 2r² and 5r is r so divide it out.
(2r² +5r) = r(2r + 5)
In the second bracket both 14 and 35 are divisible by 7 so divide 7 out.
(14r + 35) = 7(2r + 5)
Combine your answers into:
r(2r + 5) + 7(2r + 5)
what is the value of the expression shown below when x=7? 3x^2 - 2x+3
The expression value of 3x^2 - 2x+3 is 6x^2 - 13x + 6
What is expression value?Value of an Expression The value of the expression is the result of the calculation described by this expression when the variables and constants in it are assigned values. Letters can be used to represent numbers in an algebraic expression.
Apply the distributive property:
→ 3x (2 - 3) - 2 (2x - 3)
Apply the distributive property:
→ 3x (2x) + 3x ⋅ -3 - 2 (2x - 3)
Apply the distributive property:
→ 3x (2x) + 3x ⋅ -3 - 2 (2x) - 2 ⋅ -3
Simplify each term:
→ 6x^2 - 9x - 4x + 6x
Subtract 4x from -9x
→ 6x^ - 13x + 6
Therefore, the expression value of 3x^2 - 2x+3 is 6x^2 - 13x + 6
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The value of the expression given is 136.
What are Expressions?Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.
Given expression is,
3x² - 2x + 3
We have to find the value of the expression when x = 7.
Substitute x = 7.
(3 × 7²) - (2 × 7) + 3 = (3 × 49) - 14 + 3
= 147 - 14 + 3
= 136
Hence the value of the expression is 136.
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The midpoint of \overline{\text{AB}}
AB
is M(3, -2)M(3,−2). If the coordinates of AA are (8, 4)(8,4), what are the coordinates of BB?
Answer:
Step-by-step explanation: I am trying to interpret the question: I'll assume:
Line AB has a midpoint, M.
A is (8,4)
B is unknown, but desired
M is (3,-2)
We'll assume a straight line of the form y=mx+b, where m is the slope. m can be calculated by the "Rise" over the "Run" between the points A and M:
Rise = (4-(-2))=6
Run = (8-3)=5
Slope = (Rise/Run) = (6/5)
The line becomes y=(6/5)x+b
Calculate b, the y-intercept (the value of y when x is 0), by entering one of the two known points. I'll choose (8,4).
y=(6/5)x+b
4 = (6/5)(8)+b
b = 4 - (6/5)(8)
b = 4 - (48/5)
b = 4 - (9 3/5) or -5 3/5
The equation becomes:
y=(6/5)x - 5 3/5
Point B will have an x value of -2 [The change in x from A to M was (3-8) = -5. From M to 5 would be another -5 increment, so x goes from 3 to (3-5) or -2.
Find the value of y for x=-2:
y=(6/5)x - 5 3/5
y=(6/5)*(-2) - 5 3/5
y=(-12/5) - (28/5)
y = -(40/5) or - 8
B has coordinates of (-2, -8)
If coordinates of point A is (8, 4), then the coordinate of point B will be (-2, -8).
The "Midpoint-Formula" is used to find the coordinates of a point that lies exactly halfway between two given points. It's given as :Midpoint (M) = ((x₁ + x₂)/2, (y₁ + y₂)/2),
In this case, we have the midpoint as M(3, -2) and one of the endpoints as A(8, 4). We need to find coordinates of other endpoint which is B,
Using the midpoint formula, we rearrange it to solve for the missing coordinates (x₂, y₂),
x₂ = 2 × Mₓ - x₁,
y₂ = 2 × \(M_{y}\) - y₁,
Substitute the given values:
We have : Mₓ = 3; \(M_{y}\) = -2,
x₁ = 8; y₁ = 4
x₂ = 2 × 3 - 8 = -2; y₂ = 2 × -2 - 4 = -8,
Therefore, the coordinates of point-B is(-2, -8).
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The given question is incomplete, the complete question is
The midpoint line AB is M(3, -2). If the coordinates of A is (8,4), What are the coordinates of B?
Evaluate 4|-2| - |-3|. Helpppp plz
Answer:
5
Step-by-step explanation:
What is the slope of a line graphed below?
Answer:
Undefined
Step-by-step explanation:
The slope of a horizontal line is zero. The slope of a vertical line is undefined.
Two interior angles of a right triangle are equal. Each one measures what
Twin brothers, Billy and Bobby, can mow their grandparent's lawn together in 65 minutes. Billy could mow the lawn by himself in 15 minutes less time that it would take
Bobby. How long would it take Bobby to mow the lawn by himself?
It would take Bobby
(Round to the nearest minute.)
minutes to mow the lawn by himself.
Bobby around 131 minutes and Billy around 111 minutes
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
here, we have,
To solve the problem it is important to raise equations regarding what happens.
They tell us that Billy (Bi) and Bobby (Bo) can mow the lawn in 60 minutes. That is to say that what they prune in a minute is giving as follows:
1 / Bo + 1 / Bi = 1/60 (1)
They say Billy could mow the lawn only in 20 minutes less than it would take Bobby, therefore
1 / Bi = 1 / (Bo-20) (2)
Replacing (2) in (1) we have:
1 / Bo + 1 / (Bo-20) = 1/60
Resolving
(Bo - 20 + B0) / (Bo * (Bo-20) = 1/60
120 * Bo - 1200 = Bo ^ 2 - 20Bo
Rearranging:
Bo ^ 2 - 140Bo -1200 = 0
Now applying the general equation
Bo = 130.82 or Bo = 9.17, this last value cannot be because Billy took 20 minutes less and neither can he prune faster than the two together, therefore Bobby only takes around 131 minutes and Billy around 111 minutes
Checking with equation 1:
1/131 +1/111 = 1/60
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Solve by using substitution or elimination by addition.
6x - 5y = 72
2x + 6y = -22
Answer:
(7,-6)
x = 7, y = -6
Step-by-step explanation:
(1) 6x - 5y = 72
(2) 2x + 6y = -22
multiply equation (2) by -3
-3 (2x + 6y = -22)
-6x - 18y = 66
add equation (1) and the new equation:
6x + -6x = 0
-5y + -18y = -23y
72 + 66 = 138
---> -23y = 138
divide both sides by -23
y = -6
plug in y = -6 into equation (2):
2x + 6(-6) = -22
2x - 36 = -22
2x = 14
x = 7
Select a personal or professional example of a measurement you use routinely. Convert the measurement either from U.S customary units to metric units, or from metric units to U.S. customary units. You may choose more than one measurement and may choose among weight, length, temperature, etc. Show each step of your conversion and be sure to include all units from the original and converted measurements (for example, yards to meters, degrees Celsius to degrees Fahrenheit).
A personal example of a measurement I use routinely is converting weight from U.S. customary units to metric units. Let's convert pounds to kilograms.
To convert pounds to kilograms, we use the conversion factor of 1 pound = 0.453592 kilograms.
For example, if I have a weight of 150 pounds, I can calculate the equivalent weight in kilograms as follows:
150 pounds * 0.453592 kilograms/pound = 68.0388 kilograms
Therefore, 150 pounds is approximately equal to 68.0388 kilograms.
In this conversion, we multiply the weight in pounds by the conversion factor to obtain the weight in kilograms. By using the appropriate conversion factor, we can accurately convert weights from U.S. customary units to metric units.
It's important to note that conversion factors may vary slightly depending on the rounding used and the exact value of the conversion factor.
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Please help! i have no clue what the answers are!
Answer:
1) 9
2) 27
3) Read explanation below!
Step-by-step explanation:
1) Use the Pythagorean theorem to find AD. Show your working
Pythagorean theorem = a²+b²=c²Where a = 12 and c=15 = 12²+?²=15²To find '?' we first have to expand the indices...
12² = 14415² = 225144 + ?² = 225Now work out '?'
225 - 144 = 81√81 = 92) Find AC. Show your working
We have found out that AD is 9 and to find AC we have to add 18!
9 + 18 = 273) Is ΔABC a right triangle? Explain
We can that ΔABC is not a right angle as none of the angles in the triangle are 90°! If it was a right angled triangle we would see the ∟sign on one of the angles. Even though there are two of those in the middle it does not count as the question is asking about ΔABC!!
Have a lovely day :)
Need help on this please! (Will mark brainliest)
I rent a gym for $150 for 30 students. Another time I rent the gym for $350 for 70 students. What is my rate per student?
Answer:
The rate is 5 dollars per student.
Step-by-step explanation:
The rate per student can be found with \(\frac{dollars}{student}\):
\(\frac{150dollars}{30student}=5\frac{dollars}{student}\\\\\frac{350dollars}{70student}=5\frac{dollars}{student}\)
The rate is 5 dollars per student.
Find the value of x
(6x+7) (8x-17)
Answer:
x=12
Step-by-step explanation:
6x+7=8x-17
-6x -6x
7=2x-17
+17 +17
24=2x
÷2 ÷2
12=x
x=12
A shop makes a profit of £2 750 in March
It has an Easter sale and the profit for April is £3 162.50
Work out the profit percentage increase
The percent increase of the profit is 15%
How to determine the percent increase of the profit?In this question, the figures are given as
Profit in March = £2750
Profit in April = £3162.50
The percentage of the increase of the profit is then calculated using the following equation
Increase percentage = (Profit in April - Profit in March)/Profit in March * 100%
Substitute the known values in the above equation, so, we have the following representation
Increase percentage = (3162.50 - 2750)/2750 * 100%
Evaluate
Increase percentage = 15%
Hence, the increase in percentage is 15%
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The area of Canada is 17 times the area
of France.
The area of Canada is 3,851,809 square
miles.
What is the area of France?
plsss help
Answer:
A(Canada) / factor = A(France)
3,851,809/17 = A(France)
226,577 sqmi = A(France)
Hope that helps
NOTE: This answer is a bit off from the actual calculation but it is fine because the original value of Canada's area was given about 5,000 sqmi off.
What is the equation of line H? Give your answer in the form y = mx + c, where m and c are integers or fractions in their simplest forms. -8-7 -6 -5 -4 -3 -2 Y Line H 40- 35 30- 25 20 15 10 54 0 =5 10 -15 -20 -25- -30 -35- -40- 1 2 3 4 -S 5 6 7 -∞o 8
The equation of line H in fully simplified slope-intercept form is y = 15x + 10.
How to determine an equation of this line?In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical expression:
y - y₁ = m(x - x₁)
Where:
x and y represent the data points.m represent the slope.First of all, we would find the slope of this line;
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Slope (m) = (40 - 10)/(2 - 0)
Slope (m) = 30/2
Slope (m) = 15.
At data point (0, 10) and a slope of 15, a linear equation for this line can be calculated by using the point-slope form as follows:
y - y₁ = m(x - x₁)
y - 10 = 15(x - 0)
y = 15x + 10
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
A die is rolled 5 times and a "2" is rolled each time. What is the experimental probability for rolling a 3?
\sqrt{(3\sqrt{2} -\sqrt{14} )^{2} }
I am really having trouble with this, any pointers?
Answer:
???
Step-by-step explanation:
im so confused so what are you trying to answer?
Answer:
I don’t know the answer but what you could do to help would be the off little by little and then go to it that way or ask a parent or guardian for help
Step-by-step explanation:
1. Write a polynomial of degree 3 with zeros
x = 3,x= -4, and x = 5.
The polynomial of degree 3 with zeros at x = 3, x = -4, and x = 5 is P(x) = x^3 - 4x^2 - 17x + 60.
To construct a polynomial of degree 3 with zeros at x = 3, x = -4, and x = 5, we can use the fact that the polynomial can be written as a product of linear factors corresponding to each zero.
The factor corresponding to x = 3 is (x - 3).
The factor corresponding to x = -4 is (x + 4).
The factor corresponding to x = 5 is (x - 5).
To obtain the polynomial, we multiply these factors together:
P(x) = (x - 3)(x + 4)(x - 5)
Expanding this expression gives us:
\(P(x) = (x^2 - 3x + 4x - 12)(x - 5)\)
\(= (x^2 + x - 12)(x - 5)\)
\(= x^3 - 5x^2 + x^2 - 5x - 12x + 60\)
\(= x^3 - 4x^2 - 17x + 60\).
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which two equivalent to 4(7x + 2 + x)?
Answer:
4th one. A & C
Step-by-step explanation:
4(7x+2+x)
= 28x+ 8+ 4x
= 32x + 8
Dominic's three daughters want to take gymnastics this year. It costs $90 per month per child. How much does Dominic need to budget for a year (12 months) of gymnastics for his daughters?
Do not include the dollar sign in your answer.
The solution is 3,240
This is the answer I got I'd like for someone to check my work please?
Answer:
90 per month per child
A year-12 months
3 children
~ 90×12
=1080
1080×3
=3240
what is 58388383-776463783
Answer:
Subtract 58388383 - 776463783
Determine the transfer function h(z) for the following difference equation where y(n) is the output and x(n) is the input. where are the zeros and poles? a. y(n) = 1/√2 x(n) + 1/√2 x(n-1)
b. y(n) = 1/√2 x(n) - 1/√2 x(n-1)
c. y(n) =-6.2y(n-1) + 5.75y(n-2) + 8.23x(n) - 5.4x(n-1) +23.45x(n-2)
a. The transfer function h(z) for the given difference equation is H(z) = (1/√2) (1 + \(z^{-1\)).
The zeros and poles are: Zero at z = -1 and pole at z = 0.
b. The transfer function h(z) for the given difference equation is H(z) = (1/√2) (1 -\(z^{-1\)).
The zeros and poles are: Zero at z = 1 and pole at z = 0.
c. The transfer function h(z) for the given difference equation is H(z) = (8.23z² - 5.4z + 23.45) / (1 - 6.2z + 5.75z²).
The zeros and poles can be found by factoring the denominator of the transfer function. The two poles are at z = 1.7 and z = 4.0, and there are no zeros.
For the given difference equations, the transfer functions and corresponding zeros and poles have been determined. For part a, the transfer function is H(z) = (1/√2) (1 + \(z^{-1\)), with a zero at z = -1 and a pole at z = 0. For part b, the transfer function is H(z) = (1/√2) (1 - \(z^{-1\)), with a zero at z = 1 and a pole at z = 0. For part c, the transfer function is H(z) = (8.23z² - 5.4z + 23.45) / (1 - 6.2z + 5.75z² ), with poles at z = 1.7 and z = 4.0 and no zeros.
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Use the following function to complete this question:
f(x)=(x-1)^3+5
Graph the function and fill in the blanks.
If the transformation listed is not applicable write none.
Fill in the blanks in the form:
4 left
5 up
Write infinity in the form: inf
Horizontal shift:
Vertical shift:
Vertical stretch factor:
Vertical compression factor:
Axis of reflection:
Domain:
Range:
Inflection Point:
Pic is attached below
The following is deduced from the equation f(x)=(x - 1)^3 + 5
Horizontal shift: 1 left
Vertical shift: 5 down
Vertical stretch factor: 1
Vertical compression factor: 1
Axis of reflection: -x + 6
Domain: all real numbers
Range: all real numbers
Inflection Point: (1, 5)
What is vertical stretch factor?The vertical stretch factor is a term used in mathematics to describe the transformation that changes the height of a graph while leaving the horizontal axis unchanged. In other words, it's a factor by which the y-values of a function are multiplied to produce a new, stretched or compressed version of the original graph.
The stretch factor is usually represented by the symbol "k". For example, if the equation of a function is y = f(x), then the equation of its vertically stretched image would be y = k * f(x). A positive value of k stretches the graph upward, while a negative value of k compresses the graph downward. If k > 1, the graph is stretched vertically; if 0 < k < 1, the graph is compressed vertically; if k = 1, the graph remains unchanged.
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Rewrite the following phrase as a mathematical expression.
three times a number added to fifteen
15n+ 3
3n+ 15
3+ 15
3(15)
Answer:
3n+15
Step-by-step explanation:
three (3) times (\(*\\\)) a number (n) added (+) to fifteen (15)
3n+15 is your answer
Hope this helps!
Find the value of x that will make A||B
Answer:
x = 4
Step-by-step explanation:
If A is parallel to B, therefore,
9x + 4 = 5x + 20 (alternate interior angles are congruent)
9x + 4 - 5x = 5x + 20 - 5x (subtraction property of equality)
4x + 4 = 20
4x + 4 - 4 = 20 - 4 (subtraction property of equality)
4x = 16
4x/4 = 16/4 (division property of equality)
x = 4
Which numbers are factors of 42? Check all that apply.
0 1
2.
O 3
4
06
8
Answer:
1, 2, 3, 6 are all factors of 42
ILL GIVE BRAINLY-EST TO WHOEVER CAN SOLVE ALL
Lin works in an electronics store. Her monthly pay is $950. She also receives 4% commission on all her sales. She had $12,475 in sales last month. What were her earnings last month?
Olivia bought a dress for $120. The tax rate is 9%. What is the total amount Olivia paid for the dress?
Jiang counted that he'd thrown 90 pitches in a baseball game. He had actually thrown 94 pitches. Calculate the percent error and round to the nearest percent.
Liz's lunch costs $13.00. She wants to leave a 15% tip. What is the total amount including the tip that Liz paid?
Aaron deposited $200 in a savings account that offers a 6% interest rate. How much interest will he earn after 1 year?
Answer:so in this yo subrtact the number 12,475 with 950 and i think Im not sure and this is your answer
Step-by-step explanation:
Olivia bought a dress for $120. The tax rate is 9%. What is the total amount Olivia paid for the dress?
Answer:
7.5
Step-by-step explanation:
9 divided by 120 = 0.075
0.075 x 100 = 7.5