Answer:
first question :
20.85
second question :
13.5
that's all I know sorry I don't need brain lest or stars I usually don't answer, again sorry for not knowing the last questions
Step-by-step explanation:
^
Fill in the blank using the scaling factor that makes the number sentence true. 5.3 × > 5.3 0.886 or 1.00 or 1.003
The given options, the only value greater than 1 is 1.003. Therefore 0.886, which is less than 1 and makes the inequality true.
The given number sentence is 5.3 × > 5.3, where we need to find the scaling factor that makes the inequality true. To do this, we can divide both sides of the inequality by 5.3. This gives us:
5.3 × x > 5.3 ÷ 5.3 × k
We need to find the value of k that makes the inequality true. Simplifying the right-hand side of the equation, we get:
5.3 ÷ 5.3 × k = k × 1 = k
Substituting this into our equation, we get:
5.3 × x > k
We know that 5.3 × 1 = 5.3, which means that k must be greater than 1 to satisfy the inequality. Among the given options, the only value greater than 1 is 1.003. However, this value would make the inequality too large, so it is not the correct answer.
The correct answer is therefore 0.886, which is less than 1 and makes the inequality true.
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Find the probability of exactly 3 successes
in 6 trials of a binomial experiment in
which the probability of success is 75%.
P = [?]%
The prοbability οf exactly 3 successes in 6 trials οf a binοmial experiment with a prοbability οf success οf 75% is 31.1%, rοunded tο the nearest tenth οf a percent.
What is the prοbability?Prοbability is the study οf the chances οf οccurrence οf a result, which are οbtained by the ratiο between favοrable cases and pοssible cases.
Tο find the prοbability οf exactly 3 successes in 6 trials οf a binοmial experiment, we use the fοrmula:
The prοbability οf r successes in n trials is \(\rm _nC_r(p)^r(q)^{n-r\), where p is the prοbability οf success οn a given trial and q = 1-p.
In this prοblem, n = 6, r = 3, p = q = 0.75
Sο, P(3 successes in 6 trials) = \(\rm _6C_3(0.75)^3(0.75)^3\) = 0.13184 ≈ 13.2%
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show that a) cos3∅=cos²∅-3cos∅sin²∅
The correct proof of the equation is cos3θ =cos(2θ + θ) = cos²θ - 3cosθsin²θ (Proved)
Solving trigonometry identity
Given the trigonometry identity below:
cos3∅=cos²∅-3cos∅sin²∅
We are to prove that both sides of the equation are equal.
cos 3θ = cos(2θ + θ)
Using the double angle formula for cosine, we can expand the first term:
cos(2θ + θ) = cos2θ cos θ - sin2θ sinθ
Since cos2θ = cos²θ - sin²θ
cos(2θ + θ) = cos²θ - sin²θ - 2cosθsinθsinθ
cos(2θ + θ) = cos²θ - sin²θ - 2cosθsin²θ
On simplifying, we can see that;
cos3θ =cos(2θ + θ) = cos²θ - 3cosθsin²θ (Proved)
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A ladder leans against the side of a house. The angle of elevation of the ladder is 69 when the bottom of the ladder is 8ft from the side of the house. How high is the top of the ladder from the ground? Round your answer to the nearest tenth.
Answer:
20.8
Step-by-step explanation:
Let h be the height of the ladder. We know that the distance BC is 8 ft, and the angle of elevation BAC is 69 degrees. Therefore, we have:
tan(69) = h/8
Multiplying both sides by 8, we get:
8*tan(69) = h
Using a calculator, we get:
h ≈ 20.8 ft
Therefore, the height of the top of the ladder from the ground is approximately 20.8 feet.
1.What is the equation of a circle with center (-2, 2) and radius 3?
Answer:
(x + 2)² + (y - 2)² = 3²
Step-by-step explanation:
Equation of a circle is (x - a)² + (y - b)² = r²,
where a is the x-coordinate of the centre of the circle, b is the y-coordinate of the centre of the circle, r is the circle's radius.
So, we have (x - -2)² + (y - 2)² = 3²
subtract a minus means we add.
(x + 2)² + (y - 2)² = 3²
(16x^3)^3/4 Express in simplest radical form.
Answer:
8 x 3/4. Simplify using exponent rule with same exponent abn=an . bn:16 3/4 * x 3/4 Express as a product of p
Step-by-step explanation:
...
Gabriel tossed a paper cup 40 times and recorded how the cup landed each time. He organized the results in the table shown. Find the experimental probability that the cup will NOT land right-side up. Express your answer as a fraction in simplest form.
Answer:
31/40
Step-by-step explanation:
what is the surface area of a cylinder height is 4 cm and diameter is 5 cm
Answer:
20cm it's is the answers
Step-by-step explanation:
5*4=20
5. Abbey and Blanca are playing games at the arcade in the mall. Abbey has $20 and is playing a
game that costs 50 cents per game. Blanca arrived at the arcade with $22 and is playing a game that
costs 75 cents per game.
(a) Create two linear equations below that give the amount that each girl has left as a function of the
number of games they have played.
Let the number of games played = x.
A=
B =
(b) After how many games will the two girls have the same amount of money left?
(c) How much money do they have at this point?
Answer:
A = 0.50x+20
B= 0.75x+22
4 games
$19
Step-by-step explanation:
For abbey, the 20 dollars she starts with is the initial value. the 50 cents per game would be the constant rate of change/slope. So, the equation(y=mx+b) would be A = 0.50x + 20. For Bianca, the 22 dollars she starts with is her initial value. the 75 centers per game would be the constant rate of change/slope. So, the equation(y=mx+b) would be B = 0.75x + 22.
We can find out when they will have the same amount of money left by making two small tables -> one for abbey and one for Bianca.
Abbey: (the number is the number of games and the corresponding value next to it is the amount of money left ---- its kind of hard to make a table on BRAINLY)
21.502019.501918.50Bianca: (the number is the number of games and the corresponding value next to it is the amount of money left ---- its kind of hard to make a table on BRAINLY)
21.2520.519.751918.25For both girls after four games, they have the same amount of money- $19.
The table and the graph each show a different relationship between the same two variables, x and y: у X у 850 3 270 680 510 4 360 340 170 5 450 0 2 4 6 8 10 6 540 How much more would the value of y be in the table, than its value on the graph, when x = 11? (1 point) 55 95 O 100 215
Answer:
The difference between value of y at x=11 is 385, the correct option is third
Step-by-step explanation:
Lois and her team used the number of red candies in a
small 9 ounce bag to predict the number of red candies in
a large 33 ounce bag. If Lois counted 12 red candies in the
small bag, Predict the number of red candies in the large bag.
Use proportional reasoning and show algebraic work.
Using proportional reasoning, we can predict that there will be 40 red candies in the large bag.
Using proportional reasoning, we can set up and solve the following equation to determine the number of red candies in the large bag:
P = Proportion of red candies in the large bag
R = Red candies in the small bag
R × (33/9) = P
12 × (33/9) = P
P = 40 red candies in the large bag
Therefore, using proportional reasoning, we can predict that there will be 40 red candies in the large bag.
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Explain the five properties of multiplication.
Question 2 help meeee pleaseee
Thank you
3 cm/h easy peasy
Step-by-step explanation:
12 cm in 4 hrsFor 1 cm : 12/4 = 3 cmwhat is the measure of x
Answer:
x = 9 inches
Step-by-step explanation:
You want the value of x in the similar triangles shown.
ProportionCorresponding sides are proportional. This means the ratio of the horizontal side of the triangle to the vertical side is the same for both.
6/4 = (6+x)/10
15 = 6 +x . . . . . . . . multiply by 10
9 = x . . . . . . . . . subtract 6
The measure of x is 9 inches.
__
Additional comment
You could also write the proportion ...
6/4 = x/(10 -4)
x = 36/4 = 9 . . . . . . . multiply by 6
You can see this if you draw a horizontal line through the figure at the top of the side marked 4 in.
<95141404393>
solve y''+y=t using laplace inverse with y(0)=1 and y'(0)=-2
The solution of the differential equation y'' + y = t with the initial conditions y(0)=1 and y'(0)=-2 is y(t)= 1-2t+te-t.
What is equation?Equation is a mathematical statement that expresses the equality of two expressions. It shows the relationship between two or more variables and can be written using symbols, numbers, and operations. Equations are used to describe physical laws, to make calculations, and to solve problems. Examples of equations include the Pythagorean theorem, Newton's laws of motion, and linear equations.
We solve this differential equation using Laplace inverse, with the initial conditions y(0)=1 and y'(0)=-2. First, we take the Laplace transform of the equation:
L[y''+y]=L[t]
Using the properties of Laplace transform, we can write this as:
s2Y(s)-sy(0)-y'(0)+Y(s)= (1/s)
Substituting the initial conditions and rearranging terms, we have:
Y(s)= (1/s) + (2/s2) + (1/s2)
We can then invert the Laplace transform to get the solution of the original equation:
y(t)= 1-2t+te-t
Therefore, the solution of the differential equation y'' + y = t with the initial conditions y(0)=1 and y'(0)=-2 is y(t)= 1-2t+te-t.
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There are five questions listed below. Each question includes the quantity 22. Match the 22 in each question on the left to w
part of the problem it represents on the right - the base, percent, or amount. Some answer options on the right will be used
more than once.
The Matchings are:
3 is 16.63% of 22.22 is 13.41% of 164.0.88 is 4% of 22.8 is 22% of 36.36.1.1 is 5% of 22.What is Percentage?A ratio or figure stated as a fraction of 100 is called a percentage.
Let 3 be x% of 22.
x% of 22 = 3
22x = 300
x= 13.63%
So, 3 is 13.63% of 22.
Let 22 be y % of 164.
y% of 164 = 22
164y= 2200
y= 13.41%
So, 13.41% of 164 is 22.
4% of 22 = 0.88
then, 4/100 x 22 = 0.88
Let 8 is 22% of z.
22z/100 =8
z= 36.36
5% of 22 = 1.1
= 5/100 x 22
= 1.1
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There are 500 students in a school, 220 like science subject, 180 like math and 40
like both science and math. Find the number of students who like
•Science but not math
•Math but not science
•Either math or science
Answer:
science only is 220
math only is 180
either math or science is 60
Solve. Show each step.
5.4 - 6x = -6
Answer:
x = 1.9
Step-by-step explanation:
5.4 - 6x = -6
Gotta isolate the x, so you would minus 5.4 from both sides:
5.4 - 5.4 - 6x = (-6) - 5.4
5.4 - 5.4 cancels out, and (-6) - 5.4 is -11.4 What's left is:
- 6x = -11.4
Gotta isolate the x, so divide -6 to both sides. It negative because the sign in front of it is a subtraction sign, it would be positive if there is a addition sign:
- 6x/(-6) = (-11.4)/(-6)
-6 divide by -6 cancels out, and -11.4 divided by -6 is 1.9. A negative divided by a negative is a positive. Result, x is now isolated:
x = 1.9
What is the range of the data set?
Answer:
Range = 19
Step-by-step explanation:
Range = maximum value - minimum value
Maximum value is indicated by the whisker to our far right on a box plot = 25
Minimum value is at the whisker to our far left = 6
Range = 25 - 6 = 19
50 POINTS !!
PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.
Answer: 4.2
Step-by-step explanation:
Here's the formula for how to find the hypotenuse: (a and b are the two legs for the triangle-- it doesn't matter which leg is a and which leg is b, but c MUST be the hypotenuse)
\(a^2+b^2=c^2\)
\(1.9^2+3.8^2=c^2\)
\(3.61+14.44=c^2\)
\(18.05=c^2\)
\(\sqrt{18.05} =c\)
\(c=4.2\)
Question
Henry has collected data to find that the
typing speeds for the students in a typing
class has a normal distribution. What is the
probability that a randomly selected student
has a typing speed of less than 51 words per
minute if the mean (u) is 47 words per
minute and the standard deviation (o) is 4
words per minute? Use the empirical rule.
• Provide the final answer as a percent.
Provide your answer below:
%
The probability that a randomly selected student has a typing speed of less than 51 words per minute if the mean (u) is 47 words per minute and the standard deviation (o) is 4 words per minute is; 68%
How to use empirical formula in statistics?The empirical rule in statistics states that for normal distributions, 68% of observed data points will lie inside one standard deviation of the mean, 95% will fall within two standard deviations, and 99.7% will occur within three standard deviations.
The formula for z-score is;
z = (x' - μ)/σ
where;
x' is sample mean
μ is population mean
σ is standard deviation
We are given;
x' = 51
μ = 47
σ = 4
Thus;
z = (51 - 47)/4
z = 1
From empirical formula at 1 standard deviation above the means, the probability is 68%.
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A math class surveyed students about their musical preferences an recorded the results in the table. Use tha data wtite a ratio for each comparison in three differents ways.
A) Students who preferer classical to students who prefer echno.
B) Students who prefer hip-hop to total number of students survyed
Table
Music Number .........Students
Rock .................................10
Classical........................... 4
Techno ............................12
Hip-Hop.......................... 15
Contry.............................. 8
Alternative...................... 4
Total Students.............53
Help Please
derrick is preparing to submit his taxes. over the year, he kept track of certain deductions he is able to claim (all rounded to the nearest dollar). these values are given below. 65,144,97,144,103,98,101,127,58,151 derrick figures that he will receive the following amounts: $25 for each deduction that is under $130 and $45 for each deduction that is $130 or more. use the ti-83 or 84 to draw a histogram for these values using 4 classes. using that histogram, determine how much total derick will receive from all of his deductions.
Derrick will receive total of $340 from all of his deductions
To create a histogram for these values using four classes, we must first determine the class width, which is determined as the data range divided by the number of classes. The data range is 151 - 58 = 93, which is the difference between the biggest and smallest numbers. The breadth of the class is 93/4 = 23.25. We'll round it up to 24 because we can't have a fractional class width.
Then, for each of the four classes, we'll start with the smallest number (58) and add the class width (24) again until we reach the maximum value (151). The lowest class boundaries for the four classes are as follows:
Class 1: 58
Class 2: 82
Class 3: 106
Class 4: 130
We'll determine the upper class limit for each lower class limit by adding the class width (24) - 1. The upper class restrictions are as follows:
Class 1: 81
Class 2: 105
Class 3: 129
Class 4: 153
Finally, we'll tally the amount of deductions made in each class and utilise that data to create the histogram. Each class has the following number of deductions:
Class 1: 1 (58)
Class 2: 3 (97, 98, 101)
Class 3: 3 (103, 127, 144)
Class 4: 3 (144, 151, 65)
We can compute the total amount Derrick will earn from all of his deductions now that we know the number of deductions in each class. He will earn $25 for each deduction of less than $130, and $45 for each deduction of $130 or more.
Derrick will receive the following total from all of his deductions:
$25 * 1 (for the single deduction of less than $130) + $45 * 7 (for the seven deductions of $130 or over) = $25 + $315 = $340
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Maria works for an online auto trader. She makes a piecewise function to show the cost to place an online
advertisement.
(39
(39+5(x-6)
What is the cusp of the function?
c(x)
whenx ≤6
when x>6
According to the given information, the function has no cusp.
What is a function?
A function is a relation between a set of inputs and a set of possible outputs, with the property that each input is related to exactly one output.
The given piecewise function is:
c(x) = 39, when x ≤ 6
c(x) = 39 + 5(x - 6), when x > 6
A cusp is a point on the graph where the function changes direction very abruptly, like a sharp turn. This happens when the derivative of the function is not defined at that point.
The derivative of the function is:
c'(x) = 0, when x ≤ 6
c'(x) = 5, when x > 6
Since the derivative is defined and continuous at x = 6, there is no cusp at that point. Therefore, the function has no cusp.
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if h(x)= 1-7x find the value of h(-7)
Evaluate the expression 81÷ (14 − 5) × 2
Answer:
See below.
Step-by-step explanation:
81/(14-5)*2
81/9*2
9*2
18
-hope it helps
Answer:
18
Step-by-step explanation:
since 81 divided by 9 (which is 14-5) is 9
and 9 multiplied by 2 is 18
mrs. watson is buying vintage records for a friend at a local records shop. Thre price of a record is based on its condition. The table shows the total cost of x number of records for each condition.
The equation for total cost of buying and shipping the records is
76.4x + 80
We have,
She buys 3 in good condition
So, the cost for 3 good condition
= 3 (10.5x)
= 31.5 x
and, She buys 1 in Fair condition
So, the for 1 fair condition
= 5x
and, She buy 2 new condition then the price is
= 39.9 x
So, the equation for total cost of buying and shipping the records is
= 31.5x + 5x + 39.9x + 8
= 76.4x + 8
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consider the expression\[x^2 \boxed{\phantom{00}}x 100.\] find all possible values for the missing number that make this expression the square of a binomial.
The missing number must make the expression a perfect square trinomial in the form \((a + b)^2\).
This means that the missing number must be equal to the product of the two factors outside the parentheses, minus the square of the number inside the parentheses.
In this case, the missing number must be equal to \(100x^2 - x^2, or 99x^2\).
Using the FOIL method (First, Outer, Inner, Last), we can expand \((x + x)^2 to get x^2 + 2x^2 + x^2\). Since the expression we are working with is \(100x^2 + 2x^2 + x^2\), the missing number is \(99x^2\).
Therefore, the missing number that makes this expression the square of a binomial is \(99x^2\).The missing number must make the expression a perfect square trinomial in the form \((a + b)^2\).
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The fractions 3/4,6/8 ,9/12 , and 12/16 are examples of _____.
Answer:
Equivalent fractions
Step-by-step explanation:
2 3/4 of 500grams in step by step calculator
Answer:
To calculate 2 3/4 of 500 grams, follow these steps:
1. Convert the mixed number to an improper fraction:
2 3/4 = (2 x 4 + 3)/4 = 11/4
2. Multiply the improper fraction by 500:
11/4 x 500 = (11 x 500)/4 = 2,750/4
3. Simplify the fraction by dividing the numerator and denominator by their greatest common factor, which is 2:
2,750/4 = (2 x 1,375)/(2 x 2) = 1,375/2
Therefore, 2 3/4 of 500 grams is equal to 1,375/2 grams or 687.5 grams.
Step-by-step explanation: