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FrozenT [24]
2 years ago
10

How much is (+2) + (-12)​

Mathematics
1 answer:
sergey [27]2 years ago
6 0

Answer:

Subtract

2

from

−

12

.

−

14

Step-by-step explanation:

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<span>decimal 1.25 percent 125% fraction 5/4</span>
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How meany people use khan for there math?
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Find the area!! 20 POINTS
sattari [20]
Step One
Begin by drawing a line parallel to the x axis. Create it so it goes through (0,1)
This line you have drawn should hit points on the figure at (-5,1) (-2,1) and (3,1) 
You now have a figure on the bottom that is a trapezoid. It has 2 small triangles on top of it. We'll talk about them later.

Step Two
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Step Four
Find the area of the small triangle on the right.
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43.5 <<<< answer
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3 years ago
A.) The formula for the volume of a sphere is given below and the relationship between the radius r and the diameter d is r=d/2.
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Answer:

\displaystyle V=\frac{4}{81}\cdot \pi\ cm^3

Step-by-step explanation:

<u>The Volume of a Sphere </u>

The volume of a sphere of radius r is given by:

\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3

A. )

If the diameter of the sphere is d, the radius is r=d/2. Substituting:

\displaystyle V=\frac{4}{3}\cdot \pi\cdot \left (\frac{d}{2}  \right )^3

Operating

\displaystyle V=\frac{4}{3}\cdot \pi\cdot \frac{d^3}{8}

Simplifying

\displaystyle V=\frac{1}{6}\cdot \pi\cdot d^3

B.)

The diameter of the sphere is 2/3 cm, thus the volume is:

\displaystyle V=\frac{1}{6}\cdot \pi\cdot \left (\frac{2}{3}  \right )^3

Operating:

\displaystyle V=\frac{1}{6}\cdot \pi\cdot \frac{8}{27}

\displaystyle V=\frac{8}{27}\frac{1}{6}\cdot \pi

\boxed{\displaystyle V=\frac{4}{81}\cdot \pi\ cm^3}

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