Answer:9514 1404 393
Answer:
h = 3V/(πr²)
Step-by-step explanation:
The formula can be solved for h by multiplying both sides by the inverse of the coefficient of h.
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Additional comment
Whenever a variable has a coefficient you don't want, you can make that be 1 by multiplying the equation by the inverse of the coefficient. This is the same as dividing by the coefficient. This makes use of the fact that for any non-zero 'a', the ratio a/a has a value of 1. Anything multiplied by 1 is unchanged.
V = ah ⇒ V/a = (ah)/a = h(a/a) = h·1 = h
Note that we multiply the whole equation (both sides of the equal sign) by 1/a. The basic rule of equality is that you can do whatever you like to an equation, as long as you do it to both sides.
Step-by-step explanation:
Well (5 x -10^6) is -5000000 and ( 4 x 10^3) is 4000 so then you have to do -5000000 / 4000. You can cross out the zeros to get -5000 / 4 which gets you -1250 so the answer is -1250.
The answer is x = 3 because is we substitute 3 for x, we get 6 on both sides. 3(3) - 3 = 2(3) (=) 9 - 3 = 6 (=) 6 = 6.
Answer:
Step-by-step explanation:
<u>Given</u>
- SP = $25
- SP = CP + 25% = 1.25CP
<u>Find cost price for each memory card</u>
- 25 = 1.25CP
- CP = 25/1.25
- CP = 20
<u>The store paid for 50 memory cards</u>
Ratio is 1: 2:3
longest side = 12
12 / 3 = 4
4/2 = 2
shortest side is 2