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Gre4nikov [31]
3 years ago
7

There are 39 8th graders on student council. If 65% of student council is 8th graders how many total student are on student coun

cil?
Mathematics
1 answer:
Taya2010 [7]3 years ago
6 0

Total students = number on council / percentage

Total students = 39 / 0.65 = 60

There are 60 students on student council.

You might be interested in
What is the area of this figure? Round to the tenth if necessary.
Julli [10]

Answer:

<h3>b) 850.1 centimeters.</h3>

Step-by-step explanation:

To find the area of this figure, we must first find the areas of the shapes that compose this figure.

This figure is made up of a rectangle and a semicircle.

Remember: To find the area of a semicircle, multiply the radius by itself twice, then multiply the product pi, lastly divide the product by 2.

a=\pi r^2/2

<u>3.14 will be used for pi!</u>

To find the area of a rectangle, multiply the length by the width. The product is the area of the rectangle.

a=lw

Now, let's solve.

The diameter of the semicircle is 32 centimeters.

To find the radius of a semicircle, divide the diameter by 2.

32/2=16

The radius of the semicircle is 16 centimeters.

Now that we have the radius, we can find the area of the semicircle.

\pi 16^2/2=401.92

The area of the semicircle is 401.92 centimeters.

Furthermore, we find the area of the rectangle.

14*32=448.

The area of the circle is 448 centimeters.

Next, we add the areas of both shapes to find the area of this figure.

401.92+448

=849.92

The final step is to round 849.92 to the nearest tenth.

Even though 849.92 to rounded to the nearest tenth is 849.9, there is no answer choice for this. The closest one to this answer is choice 'b.'

I, therefore, believe the area of this figure is 850.1 centimeters.

3 0
3 years ago
PLEASE HELP ill give brainlist to the first right answer
attashe74 [19]

Answer:

Step-by-step explanation:

Put it into y=mx+b form and use substitution.

3 0
3 years ago
Let’s assume that, over the years, a paper and pencil test of anxiety yields a mean score of 35 for all incoming college freshme
vovangra [49]

Answer:

|t| = 2.235 > 2.093

we rejected null hypothesis.

It is not coming from population

Step-by-step explanation:

<u>Step:-1</u>

Let’s assume that, over the years, a paper and pencil test of anxiety yields a mean score of 35 for all incoming college freshmen.

μ = 35

small sample size n =20

mean of the sample   x⁻ = 30

standard deviation of  (S) = 10

<u>Null hypothesis</u> :- The difference between x⁻  and μ is not significant

<u>Alternative hypothesis</u>:- The difference between x⁻  and μ is significant

that is μ ≠ 35

<u>Level of significance </u>:-∝ =0.05

<u>The test statistic:- </u>

<u></u>t = \frac{x^{-} - population mean}{\frac{S}{\sqrt{n} } }<u></u>

<u>substitute all values in above equation</u>

μ = 35 ,n =20

mean of the sample   x⁻ = 30

standard deviation of  (S) = 10

t = \frac{30 - 35}{\frac{10}{\sqrt{20} } }

t= -2.235

|t| = 2.235

The degrees of freedom γ =n-1 =20-1 =19

By tabulated value of 't' for 19 degrees of freedom at 5% level of significance.= 2.093 for two tailed test.(see attached diagram below)

<u>conclusion</u>:-

|t| = 2.235 > 2.093

we rejected null hypothesis.

It is not coming from population

<u></u>

8 0
4 years ago
A cheetah runs 1 2/3 meters in 0.1 second.Determine the cheetah's speed in meters per second.
UNO [17]
1s = 0.1s X 10
1 2/3 = 5/3
10 = 10/1
5/3 X 10/1 = 50/3 = 16 2/3 = 16.666m/s
3 0
3 years ago
14.88 + x = 17.05 What is the value of x?
julia-pushkina [17]

Answer:

Step-by-step explanation:

14.88 + x = 17.05

x = 17.05 - 14.88

x = 2.17

hope it helps

7 0
3 years ago
Read 2 more answers
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