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3 years ago

One-third of a number yields twelve. Which equation could be used to find the number?

Mathematics

2 answers:

NeX [460]3 years ago

7 0

1/3n=12

this is the answer

LenaWriter [7]3 years ago

4 0

Answer:

1/3n=12

Step-by-step explanation:

The reason why it is 1/3n=12, is because you know that the number in front of n is 1/3. By figuring that out, you have already ruled out 3n=12 and 3n=-12. Finally, you know that 12 is a positive number leaving you with 1/3n=12.

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Given a cone with a volume of 288 in and height 7 in find the base radius of the cone

nlexa [21]

$\bf \textit{volume of a cone}\\\\
V=\cfrac{\pi r^2 h}{3}\quad 
\begin{cases}
r=radius\\
h=height\\
------\\
h=7\\
V=288
\end{cases}\implies 288=\cfrac{\pi \cdot r^2\cdot 7}{3}
\\\\\\
\cfrac{288\cdot 3}{7\pi }=r^2\implies \sqrt{\cfrac{288\cdot 3}{7\pi }}=r$

5 0

4 years ago

How do you solve 4.23-5(0.04+0.09) step by step?

gtnhenbr [62]

Answer:

-0.04

Step-by-step explanation:

4.23-5= -0.77

-0.77*0.04= -0.03

-0.77*0.09= -0.07

-0.07 + -0.03= -0.04

8 0

3 years ago

Name the plane represented by the front of the box.

dusya [7]

Answer:

not sure

Step-by-step explanation:

not sure what you're trying to show?

5 0

3 years ago

Help!!! please & explain if can:(

horsena [70]

Answer:

x = 15

Step-by-step explanation:

AEB is a right angle, a right angle is 90 degrees

this means 5x+15 needs to equal 90

plug in 15 for x

5 x 15 + 15 = 90

6 0

3 years ago

I have no idea what the heck evaluate means

lord [1]

Evaluate basically just means to solve.

Replace the given vaule of m into the equation to get -8/2.

Then solve.

-8 divided by 2 is -4

8 0

3 years ago

Read 2 more answers