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3 years ago

40 points!!!

Mathematics

2 answers:

natita [175]3 years ago

8 0

Answer: c

Step-by-step explanation:

apex

Nimfa-mama [501]3 years ago

3 0

Answer: B

Step-by-step explanation: I have no Idea if this is right but I’m just guessing that the answer is “B”.

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The area of a circle is 3.142cm square.find the radius and diameter of the circle

suter [353]

Answer:

50.24 or 50.272

Step-by-step explanation:

Square radius and then times by 3.14 or 3.142

4^2*3.14 = 50.24

4^2*3.142 = 50.272

3 0

2 years ago

Read 2 more answers

A school bake sale eared over $25 from selling cookies, $3 each how many cookies did they sell

MAXImum [283]

For $25 exactly is 8.3 cookies (recurring 3) but that is highly unrealistic, so over 25 dollars is 9 cookies (for 27 dollars) at the very least.

7 0

3 years ago

Zev has 36 pencils and 45 erasers. He wants to use all of the pencils and erasers to make identical packages for his friends. Wh

soldier1979 [14.2K]

Answer:

Step-by-step

If you don't want to have anything left over, then the highest common factor is

36: 2 * 2 * 3 * 3

45: 3 * 3 * 5

The highest common factor is 9.

So he can make nine packages with

4 pencils in each one and

5 erasers in each package.

3 0

2 years ago

An art teacher has a roll of mural paper this is 5meters long. She needs to cut it into 1-Decimeter long pieces for a collage pr

zysi [14]

Answer:

50 pieces

Step-by-step explanation:

1 decimeter = 0.1 meter

Therefore,

$\frac{5}{0.1} = 50$

Thus, 50 pieces can be cut.

4 0

2 years ago

The following hypotheses are given. H0 : σ1² ≤ σ2² H1 : σ1² > σ2² A random sample of five observations from the first populat

Harrizon [31]

Answer:

Desision is to not reject the null hypothesis, this means that the variance of the second population is equal or greater than the variance of the first population.

Step-by-step explanation:

Hello!

You have the hypothesis set:

H₀: δ₁² ≤ δ₂²

H₁: δ₁² > δ₂²

α: 0.01

To study the population variance of two populations you have to work with the F-distribution. The statistic is:

F= (S₁²/S₂²)*(σ₁²/σ₂²) ~ F $_{(n1-1);(n2-1)}$

This is a one tailed test, the critical value is

$F_{(n1-1); (n2-1); 1-\alpha } = F_{4; 6; 0.99} = 9.15$

If the statistic value F $_{H0}$ ≥ 9.15, the decision is to reject the null hypothesis.

If the value F $_{H0}$ < 9.15, the decision is to not reject the null hypothesis.

F $_{H0}$ = (S₁²/S₂²)*(σ₁²/σ₂²) = (12/7) * 1

F $_{H0}$ = 1.714

Desision is to not reject the null hypothesis, this means that the variance of the second population is equal or greater than the variance of the first population.

I hope you have a SUPER day!

8 0

2 years ago