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2 years ago

What is the surface area of the cube below?

Mathematics

2 answers:

My name is Ann [436]2 years ago

7 0

Answer:

surface area is the sum of the exterior surfaces of a solid

Since all sides are the same length and width they will all have the same area, so let's just find the area of one side then multiply it by the many sides the figure has which is 6.

4 x 4 = 16, area of one side

16 x 6(all the sides of the cube) = 96 units^2

alex41 [277]2 years ago

3 0

B 64 units, explanation: 4x4x4 = 64 hope it helps!

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Based on past experience, a bank believes that 8.9 % of the people who receive loans will not make payments on time. The bank ha

love history [14]

Answer:

To be able to approximate the sampling distribution with a normal model, it is needed that $np \geq 10$ and $n(1-p) \geq 10$ , and both conditions are satisfied in this problem.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they will make payments on time, or they won't. The probability of a person making the payment on time is independent of any other person, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The sampling distribution can be approximated to a normal model if:

$np \geq 10$ and $n(1-p) \geq 10$

Based on past experience, a bank believes that 8.9 % of the people who receive loans will not make payments on time.

This means that $p = 0.089$

The bank has recently approved 220 loans.

This means that $n = 220$

What must be true to be able to approximate the sampling distribution with a normal model?

$np = 220*0.089 = 19.58 \geq 10$

$n(1-p) = 220*0.911 = 200.42 \geq 10$

To be able to approximate the sampling distribution with a normal model, it is needed that $np \geq 10$ and $n(1-p) \geq 10$ , and both conditions are satisfied in this problem.

3 0

3 years ago

The summit of a mountain pass is 8,050 ft above sea level. the valley below is 12 and 1/2 ft below sea level. what is the vertic

Veseljchak [2.6K]

Answer:

Vertical distance between the valley and the summit = 8062.5 ft

Step-by-step explanation:

Distances above the sea level are denoted by positive notations and below the sea level by negative notation.

Summit of a mountain pass = 8050 (above the sea level)

Valley below the sea level = 12 and half ft = (-12.5) ft

Distance between the summit and the valley = 8050 - (-12.5)

= 8050 + 12.5

= 8062.5 ft

Therefore, Vertical distance = 8062.5 ft will be the answer.

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3 years ago

Which expression has the largest value? Each has 3/8 as a factor.

evablogger [386]

C and A is the best answer

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3 years ago

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Element X decays radioactively with a half life of 13 minutes. If there are 830 grams of Element X, how long, to the nearest ten

Nonamiya [84]

Answer:

26.92 min

if I'm not wrong!

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3 years ago

HELP PLEASEEEE Lots of points

MArishka [77]

Answer:

-4, 2, 3

Step-by-step explanation:

Centre: (-4,2)

Radius: 3

(x - -4)² + (y - 2)² = 3²

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3 years ago

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