Answer:
r = √3v/π
Step-by-step explanation:
in order to make r the subject of formulae from
v = 1/3πr²
multiply through by 3
3(v) = 3 ( πr²/3)
3v = πr²
divide both sides by π
3v/π =πr²/π
3v/π= r²
in order to make r stand out we would do that by squaring both sides
r = √3v/π
If we know that 6 things cost 2.99 and we want to know unit price we just have to divide 2.99 by 6.
So 2.99:6=0.49$ - its the result.
Now we can say that his sister is not correct, because price is different that 2$/unit.
<u>Hello:</u>
<u />
<u>Okay, this problem should be taken in a series of steps</u>:
<u>What is the slope's formula?</u>

- (x₁,y₁) -- first point
- (x₂,y₂) -- second point
<u>Okay, now let's use this knowledge</u>
10. (5,-19) and (-5,21)

11. (12,1) and (12, -1)

12. (8,7) and (4,7)

<u>Answer:</u>
- Question 10: -4
- Question 11: undefined
- Question 12: 0
Hopefully that helps!
Answer:
16x-7
Step-by-step explanation:
4x+12x-7
=16x-7