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Pavlova-9 [17]
3 years ago
5

A) Simplify the expression and explain each step.

Mathematics
1 answer:
dezoksy [38]3 years ago
7 0

Answer:

see below   PLEASE GIVE BRAINLIEST

Step-by-step explanation:

A)     4(3X + 2) - 2     =     12X + 8 - 2     =    12X + 6

B)     20b - 16     =  4(5b - 4)

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Assuming that a soap bubble is a perfect sphere, what is the diameter of a bubble containing 1,000 cm3 of air? Round to the near
Minchanka [31]

Answer:

17.85 cm

Step-by-step explanation:

1) Area of a sphere formula: A=4\pi r^{2}

2) Plug in A: 1000 = 4\pi r^{2}

3) Simplify: 1000 = 12.56r^{2}

4) Divide Each Side By 12.56: 79.61783439 = r^{2}

5) Take the Square Root of 79.61783439 to Solve for r: 8.922882628 = r

6) Double r to get the diameter: 8.922882628*2= 17.84576486

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8 0
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Ben made a model (shown below) of the square pyramid he plans to build when he grows up.
elena-s [515]

Answer:

336 m^2

Step-by-step explanation:

The surface area of a square pyramid is the sum of the area of the squared base + 4 times the area of each triangular face, therefore:

A=A_b + 4A_t

where:

A_b=L^2 is the area of the base, where

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Substituting,

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4 0
3 years ago
Read 2 more answers
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