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uranmaximum [27]

3 years ago

8

What is the value of the expression “two less than six times the difference of a number and five” when n = 9?

1 answer:

Finger [1]3 years ago

7 0

Answer:

Try solving 6(n-5)-2.

Step-by-step explanation:

I believe this can be set up as 6(n-5)-2. The difference of a number and five can be represented by n-5. If this needs to be multiplied by 6 (hence 6 times), it would become 6(n-5). Two less than that is represented by -2. Thus, two less than six times the difference of a number and five is 6(n-5) -2, which, when n=9 is plugged in, looks like 6(9-5) -2. Follow PEMDAS from there.

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A private and a public university are located in the same city. For the private university, 1038 alumni were surveyed and 647 sa

Snezhnost [94]

Answer:

The difference in the sample proportions is not statistically significant at 0.05 significance level.

Step-by-step explanation:

Significance level is missing, it is α=0.05

Let p(public) be the proportion of alumni of the public university who attended at least one class reunion

p(private) be the proportion of alumni of the private university who attended at least one class reunion

Hypotheses are:

$H_{0}$ : p(public) = p(private)

$H_{a}$ : p(public) ≠ p(private)

The formula for the test statistic is given as:

z= $\frac{p1-p2}{\sqrt{{p*(1-p)*(\frac{1}{n1} +\frac{1}{n2}) }}}$ where

p1 is the sample proportion of public university students who attended at least one class reunion ( $\frac{808}{1311}=0.616$ )

p2 is the sample proportion of private university students who attended at least one class reunion ( $\frac{647}{1038}=0.623$ )

p is the pool proportion of p1 and p2 ( $\frac{808+647}{1311+1038}=0.619$ )

n1 is the sample size of the alumni from public university (1311)

n2 is the sample size of the students from private university (1038)

Then z= $\frac{0.616-0.623}{\sqrt{{0.619*0.381*(\frac{1}{1311} +\frac{1}{1038}) }}}$ =-0.207

Since p-value of the test statistic is 0.836>0.05 we fail to reject the null hypothesis.

6 0

3 years ago

Dan will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $59 and costs an addi

jenyasd209 [6]

Answer:

450 miles , $90.5

Step-by-step explanation:

Let d be the miles driven

59 + 0.07d = 50 + 0.09d

d = 450

The two plans cost the same when he drives for 450 miles which the respective cost is 59 + 0.07(450) = $90.5

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2 years ago

0. 3, 0. 5, 0. 9, 1. 1What are those numbers put in order?

natima [27]

Answer:

0,0,0,1,3,5,9 I put it in order

7 0

2 years ago

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natta225 [31]

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4 0

3 years ago

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Julli [10]

Answer:

<em>(B). - 3 ≤ x < 1 </em>

Step-by-step explanation:

$\frac{\sqrt{x+3} }{\sqrt{1-x} }$

Given expression is defined for

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3 0

3 years ago