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3 years ago

21. What is the simplified form of the following expression? (1 point)

Mathematics

1 answer:

Andre45 [30]3 years ago

5 0

Answer (6y – 42)

6(y – 7)

Explanation:

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From a group of 8 volunteers, including Andrew and Karen, 4 people are to be selected at random to organize a charity event. Wha

Helga [31]

Answer:

The correct option is D. 2/7

Step-by-step explanation:

Consider the provided information.

There are 8 volunteers including Andrew and Karen, 4 people are to be selected at random to organize a charity event.

We need to determine the probability Andrew will be among the 4 volunteers selected and Karen will not.

We want to select Andrew and 3 others but not Karen in the group.

Thus, the number of ways to select 3 member out of 8-2=6

(We subtract 2 from 8 because Andrew is already selected and we don't want Karen to be selected, so subtract 2 from 8.)

The required probability is:

$\dfrac{^6C_3}{^8C_4}=\dfrac{\frac{6!}{3!3!}}{\frac{8!}{4!4!}}\\\\\\\dfrac{^6C_3}{^8C_4}=\frac{20}{70}\\\\\\\dfrac{^6C_3}{^8C_4}=\dfrac{2}{7}$

Hence, the correct option is D. 2/7

6 0

3 years ago

For a sample variance of n = 36 that has a sample variance of 1,296, what is the estimated error for the sample?

lukranit [14]

Answer:

Step-by-step explanation:

Given :

Sample size, n = 36

Sample variance, s² = 1296

The estimated standard error can be obtained using the relation :

Standard Error, S. E = standard deviation / √n

Standard deviation, s = √1296 = 36

S.E = 36/√36

S.E = 36/6

S.E = 6

Hence, estimated standard error = 6

7 0

3 years ago

Which of the following represents the ratio of the hypotenuse to the given side?

mixas84 [53]

Answer:c

Step-by-step explanation:

hyp=6 $\sqrt{2}$

adj=6

hyp:adj=6 $\sqrt{2}$ :2

hyp:adj= $\frac{6\sqrt{2} }{6} \\$

$=\frac{\sqrt{2} }{1} \\hyp:adj=\sqrt{2} :1$

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3 years ago

Otto used 6 cups of whole wheat flour and x cups of white flour in the recipe. What is the equation that can be used to find the

Rus_ich [418]

<span>Consider the equation 3p - 7 + p = 13. What is the resulting equation after the first step in the solution?</span>

8 0

3 years ago

Read 2 more answers

-0.2(-67+22)=2(7n 3)-8n =?

dangina [55]

70.6 what i got was 70.6753275399

4 0

3 years ago