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Mama L [17]
3 years ago
9

What is the surface area of a square pyramid with a base length of 8 and a height of 12

Mathematics
1 answer:
Alexxx [7]3 years ago
6 0

Answer:

256

Step-by-step explanation:

b^2 + 2bl

8^2 + 2(8)(12)

64 + 16(12)

64 + 192

= 256

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For each part of the questions below, use the following situation:
vovangra [49]

Answer:

3x=15 the x is 5

10+5=15

10 quarters

5 dimes

Step-by-step explanation:

6 0
2 years ago
Suppose Riley is interested in the cost of a gallon of gas in her state. She finds the cost of a gallon of regular gas at 61 ran
hichkok12 [17]

Answer:

The standard deviation of the sample is 0.0064.

Step-by-step explanation:

The standard deviation of a sample of length n of a population with standard deviation \sigma is given by the following formula:

s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

61 randomly selected gas stations. This means that n = 61

The standard error of the mean is $0.05. This means that \sigma = 0.05.

What is the standard deviation of the sample?

s = \frac{\sigma}{\sqrt{n}} = \frac{0.05}{\sqrt{61}} = 0.0064

The standard deviation of the sample is 0.0064.

5 0
3 years ago
Surface area of the below shape
pantera1 [17]

Solve all of the equations below and add all of the solutions to those equations to get your answer.

10x4x2=

8x4x2=

10x8=

(10x8)-(7x6)=

7x2x2=

6x2x2=

7x6=

6 0
3 years ago
On a biased dice the probability of getting a 6 is 4/5 the dice is rolled 500 times how many sixes would you expect to roll
Elanso [62]

Answer:

400 sixes

Step-by-step explanation:

Find how many sixes you could expect to roll by multiplying 500 by 4/5:

500(4/5)

= 400

So, you would expect to roll 400 sixes

4 0
2 years ago
Multiply<br> (2x + 5z)(7x - 6z)<br> Simplify your answer.
Ugo [173]

Hello!

Explanation:

Distributive property: a(b+c)=ab+ac

Multiply by the numbers.

Product it's going to be multiply by the numbers, fractions, decimals, factors, and multiples.

First, apply used their FOIL.

Foil: (a+b)(c+d)=ac+ad+bc+bd

2x*7x+2x(-6z)+5z*7x+5z(-6z)

Then you can also apply by the minus/plus sign.

2*7xx-2*6xz+5*7xz-5*6zz

And finally simplify by equation.

2*7xx-2*6xz+5*7xz-5*6zz

<em><u>Answer: =14x²+23xz-30z²</u></em>

Hope this helps!

-Charlie

Thanks!

5 0
3 years ago
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