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miskamm [114]
2 years ago
5

PLZ HELPPPPP!!!!!!! ​

Mathematics
2 answers:
sammy [17]2 years ago
7 0

Answer:

B

Step-by-step explanation:

3x2x3 is 18, then if you take 144/18 that'll get you 8

gladu [14]2 years ago
5 0
He can hold B) 8!!!!!
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The perimeter of a square field is the same as that of a rectangular field. If the length of the rectangular field is 8 km and w
Bess [88]

Answer:

42.25cm^2

Step-by-step explanation:

8+5+8+5 = 26

26/4 = 6.5

6.5x6.5 = 42.25

4 0
3 years ago
Read 2 more answers
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
What is -x2+2-1+6x2-4x2?
Alexandra [31]

Answer:

x^2+1

Step-by-step explanation:

6 0
2 years ago
What is the answer to this equation 11c=77
AVprozaik [17]

Answer:

it is 7.

Step-by-step explanation:

77 divided by 11=7

3 0
2 years ago
Read 2 more answers
Given x – 5 < One-fourth (y – 8)2, which graph represents the inequality?
Annette [7]

Step-by-step explanation:

x - 5 < 2 (y - 8) • 1/4

x - 5 < (y - 8) / 2

2 (x - 5) < y - 8

2x - 10 < y - 8

2x - 10 + 8 < y

y > 2x - 2

graph 2x - 2 and shade the section above

5 0
3 years ago
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