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3 years ago

I need help on all three questions provided I'll mark you as the brainiest and friend you.

Mathematics

2 answers:

Tju [1.3M]3 years ago

4 0

1. 0.00000001
2. 0.0006

OLEGan [10]3 years ago

3 0

11. 10^-8 = 1 • 10^-8 in decimal form

12. 6 • 10^-4 = 0.0006 in decimal form

13. n^m turns into 5^4

5 • 5 • 5 • 5 = 625
5^4 = 625

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What is the value of x?

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Step-by-step explanation:

Do the same steps that you would use for any other problem

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A number r multiplied by seven is less than or equal to 21

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r · 7 ≤ 21 [r multiplied by 7 is less than or equal to 21]

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4 years ago

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3 years ago

Find the surface area

Semmy [17]

Answer:

The surface area is $198.75\ ft^2$

Step-by-step explanation:

Step 1: Determine the area of the bottom

$A = s^2$

$A = (7.5\ ft)^2$

$A = 56.25\ ft^2$

Step 2: Determine the area of the triangles

$A = \frac{h * b}{2}$

$A = \frac{9.5\ ft * \frac{7.5\ ft}{2}}{2}$

$A=\frac{9.5\ ft*3.75\ ft}{2}$

$A = 17.8125\ ft^2$

There are two of these right triangles on every side which means that we have 8 of these triangles so we multiply the area that we got by 8.

$A = 17.8125\ ft^2 * 8$

$A=142.5\ ft^2$

Step 3: Combine the area to get the surface area

$A_{total}=56.25\ ft^2+142.5\ ft^2$

$A_{total}=198.75\ ft^2$

Answer: The surface area is $198.75\ ft^2$

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3 years ago