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2 years ago

15

What is the circumference of the circle?

1 answer:

True [87]2 years ago

5 0

Step-by-step explanation:

What is the circumference of the circle?

f) 52 cm2

e) 2610 cm2

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What is the answer for part b??

nasty-shy [4]

If you factor the expression of part A, you will get the expression of part B

the reason is that the perimeter of a rectangle is equal to 2(l+w)

so in the factorization number 2 will be multiplied by the rest of the expression

good luck

5 0

3 years ago

Solve for Y. 9/4y-12=1/4y-4

Lelechka [254]

I believe y equals 4.

9/4y - 12. = 1/4y - 4
+ 12. +12
9/4y. = 1/4y + 8
- 1/4y. - 1/4y

8/4y. = 8
2y. = 8
2. 2
Y = 4

4 0

3 years ago

Read 2 more answers

A local club had a fundraiser to raise money for 15 different programs. They

aleksley [76]

Answer:

The answer is 85. each program gets $85 each.

Step-by-step explanation:

Divide 1275 and 15

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2 years ago

9.50 One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by his or her students on a

EleoNora [17]

Answer:

Step-by-step explanation:

Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

$H_0: s^2 = 300\\H_a: s^2 \neq 300$

(Two tailed test for variance )

Sample variance =480

We can use chi square test for testing of hypothesis

Test statistic = $\frac{(n-1)s^2}{\sigma^2} \\=62.4$

p value = 0.0100

Since p <0.05 our significance level, we reject H0.

The sample variance cannot be claimed as equal to 300.

5 0

3 years ago

Help please..??? =) =)

Phoenix [80]

Answer:

1 1/4

Step-by-step explanation:

4 0

3 years ago

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