So the equation looks like this : 15*3x=78
subtract 15 from both sides: -15 -15
then divide by 3 from both sides
to isolate the variable: 3x=63
3/3x=63/3
x=21 (your mystery number is 21)

8 0

3 years ago

Find the volume of this sphere. Use 3 for T. V~ [?]in3 V = Tr3 r=4in

timofeeve [1]

Answer:

The answer is 256 $in^{3}$ .

Step-by-step explanation:

To solve for the volume of the sphere, start by using the sphere volume formula, which is V = $\frac{4}{3} \pi r^{3}$ . However, in this formula, 3 will be used instead of ( $\pi$ ).

Next, plug in the information given from the problem, and the formula will look like V = $\frac{4}{3}$ (3) ( $4 in^{3}$ ).

Then, solve the equation, and the answer will be 256 $in^{3}$ .

3 0

3 years ago