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2 years ago

help me. i don’t know any of this. i have no idea what surface area is because i wasn’t listening :DD

Mathematics

2 answers:

Y_Kistochka [10]2 years ago

3 0

Your answer should be 486 inches, you do 9x9 to find the area of one of the faces, and because there is 6 faces, you multiply that answer (81) to get 486

Oliga [24]2 years ago

3 0

486.................................

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If someone could figure out the top question that would be great, thank you so much!

Maurinko [17]

I think i only get some of it. this is what i did

x = -3 to 4y = 0.3 to 3if we use -3 and 3a < -1 < b
a= -2 to infiniteb= 0 to infinite

5 0

2 years ago

PLEASE HELP

Ahat [919]

Answer:

Step-by-step explanation:

Is is a one-tailed test

P(z < 2.45) = 0.9929

1 - 0.9929 = 0.0071

Significant at both 0.05 and 0.01 because both are greater than 0.0071

5 0

2 years ago

How to solve this and find x and y variables.

Colt1911 [192]

2x=60 and (y-8)+124=180

3 0

2 years ago

How many solutions exist for the system of equations graphed below?

Anestetic [448]

Answer:

One

General Formulas and Concepts:

<u>Algebra I</u>

Reading a coordinate plane
Solving systems of equations by graphing

Step-by-step explanation:

If 2 lines are parallel, they will have no solution.

If 2 lines are the same, they will have infinite amount of solutions.

We see from the graph that the 2 lines intersect at one point, near x = 1.5.

∴ our systems has 1 solution.

4 0

2 years ago

Read 2 more answers

You are planning a survey of starting salaries for recent business major graduates from your college. From a pilot study you est

xxTIMURxx [149]

Answer:

1245

Step-by-step explanation:

-Given the standard deviation is $9000 and the margin of error is $500.

-the minimum sample size at a 95% confidence level can be calculated using the formula:

$n\geq( \frac{z\sigma}{MOE})^2\\\\\\\geq (\frac{1.96\times 9000}{500})^2\\\\\\\geq 1244.6784\approx 1245$

Hence, the minimum sample size is 1245

*Since there's no data fromw which we are drawing our variables, we can manually input our parameters in excel and calculate as attached.

5 0

2 years ago