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Veseljchak [2.6K]

3 years ago

11

Seventy-two students chose to watch a movie on the last day of school. This is 60% of the 6th-grade class. How many total studen

ts are in the 6th grade?

2 answers:

svlad2 [7]3 years ago

7 0

Answer:

300

Step-by-step explanation:

Dimas [21]3 years ago

5 0

Answer:

300

Step-by-step explanation:

75 multiplied by 4 is 300

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3 cans that store 9 tennis balls... Find the constant of proportionality & write a equation to represent the relationship PL

Lilit [14]

<span>3 cans store 9 tennis balls.
Find the Constant of proportionality and write and equation with regards to this given situation:
=> number of tennis balls = 9
=> number of cans = 3

</span> <span>So the constant of proportionality is in the working column. Pls see attached.<span>

</span></span>

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3 years ago

If a triangle has three congruent angles, then it is equilateral.

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I believe the answer is A "If a triangle is equilateral, then it has three congruent angles". Hope this helps!

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What is the area of the shaded region on the graph shown?

Sindrei [870]

Answer:

As Doris Day said: Good morning to you

Answer 27/2

Step-by-step explanation:

$f(x)=-x^3+5x\\F(x)=-\dfrac{x^4}{4} +\dfrac{5x^2}{2} \\F(2)=\dfrac{-16}{4}+\dfrac{20}{2} =6\\\\F(-1)=\dfrac{-1}{4} +\frac{5}{2} =\dfrac{9}{4} \\g(x)=\dfrac{3x^2}{2}+\dfrac{x}{2}-5\\\\G(x)=\dfrac{x^3}{2} +x^2-5x\\\\G(2)=4+1-10=-5\\\\G(-1)=\dfrac{-1}{2} +\dfrac{1}{4} +5=\dfrac{19}{4} \\\\\int\limits^2_{-1} {(f(x)-g(x))} \, dx =F(2)-G(2)-(F(-1)-G(-1))\\\\=11+\dfrac{5}{2} =\dfrac{27}{2}$

5 0

3 years ago

The following data show the midterm and final exam scores in an English writing class. Student 1 2 3 4 5 6 7 8 9 10 11 12 Midter

tester [92]

Answer:

The co variance of the midterm and final exam scores is 58.76.

Step-by-step explanation:

The formula to compute the sample co variance is:

$Cov(x,y)=\frac{\sum(X-Mean\ of\ X)(Y-Mean\ of\ Y)}{n-1}$

The values are computed in the table below.

Compute the co variance as follows:

$Cov(x,y)=\frac{\sum(X-Mean\ of\ X)(Y-Mean\ of\ Y)}{n-1}\\=\frac{646.33}{12-1}\\ =58.76$

Thus, the co variance of the midterm and final exam scores is 58.76.

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3 years ago

There are 4129 students at a particular college, and 2801 students are taking math. What percentage of the

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0.678
= 68%
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