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Allisa [31]
3 years ago
7

WORTH 15 points! plz IM CRYING I NEED THIS DONE ASAP PLEASEEE

Mathematics
1 answer:
KonstantinChe [14]3 years ago
4 0

The lid will have a base area of 55 1/4 square inches. The long sides of the lid will each have an area of 17 square inches. The short sides of the lid will each have an area of 13 square inches. The total surface area of the lid will be 115 1/4 square inches.

So, for the base, you have w = 6.5 and l = 8.5. Area = 6.5 * 8.5 = 55.25 = 55 1/4.

For the long sides, you have l = 8.5 and h = 2. Area = 8.5 * 2 = 17

For the short sides, you have w = 6.5 and h = 2. Area = 6.5 * 2 = 13

For the total surface area, you have one base which is 55.25, you have two long sides which are 2 * 17 = 34, and you have two short sides which are 2 * 13 = 26. 55.25 + 34 + 26 = 115.25 = 115 1/4.

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Tiana can clear a football feild of debris in 3 hours. Jacob can clear the same feild in 2 hours. If they decide to clear the fe
OleMash [197]

Answer:

1 hour

Step-by-step explanation:

3 hours subtract 2 hours

3 0
3 years ago
A recent national survey found that high school students watched an average (mean) of 7.8 movies per month with a population sta
notka56 [123]

Answer:

Step-by-step explanation:

Given that :

Mean = 7.8

Standard deviation = 0.5

sample size = 30

Sample mean = 7.3 5.4772

The null and the alternative hypothesis is as follows;

\mathbf{ H_o: \mu  \geq  7.8}

\mathbf{ H_1: \mu  <  7.8}

The test statistics can be computed as :

z = \dfrac{X- \mu}{\dfrac{\sigma}{\sqrt{n}}}

z = \dfrac{7.3- 7.8}{\dfrac{0.5}{\sqrt{30}}}

z = \dfrac{-0.5}{\dfrac{0.5}{5.4772}}

z = - 5.4772

The p-value at  0.05 significance level is:

p-value = 1- P( Z < -5.4772)

p value = 0.00001

Decision Rule:

The decision rule is to reject the null hypothesis if  p value is less than 0.05

Conclusion:

At  the 0.05 significance level,  there is sufficient information to reject the null hypothesis. Therefore ,we  conclude that college students watch fewer movies a month than high school students.

8 0
3 years ago
Evaluate <br> g(4): g(x)=8x^2+9x-7<br><br> A. 121<br> B. 135<br> C. 154<br> D. 157
inn [45]
The answer is:  [D]:  " 157" .
________________________________________________________
Explanation:
______________________________________________________

 g(x) = 8x² + 9x − 7 ;

 g(4) = 8(4²) + 9(4) <span>− 7 ;
</span>
        = 8(4*4) + 36 <span>− 7 ;
</span>
        = 8(16) + 36 <span>− 7 ;
</span>
        = 128 + 36 <span>− 7 ;
</span>
        = 164 − 7 ;

       =  <span>157 .</span>
_______________________________________________________
The answer is:  [D]:  " 157" .
_______________________________________________________
7 0
3 years ago
Solve for the MNQ angle, please add steps and how to get the answer please and thank you
dusya [7]

Answer:

x =  15

Step-by-step explanation:

3x - 13 + 58 = 90

3x - 13 = 90 - 58

3x -13 = 32

3x = 32 + 13

x = 45/3

x = 15

6 0
3 years ago
How to graph y=2x-4 x+3y=9
NikAS [45]
  • Answer:

Step-by-step explanation:

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  • You solve for X
  • You solve for y
  • On the Y-axis where the 2 is you go 3 to the right and put your point right there above the 3.
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4 0
3 years ago
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