Question

Direction varation
The amount of money Sharita makes varies directly with the number of hours she works. If she earns $41.25 for 5 hours of work, how much will she earn if she works 8 hours?

Answer 1

41.25/5 = x/8 (41.25 for 5 hrs = x/8 hrs)
cross multiply
(5)(x) = (8)(41.25)
5x = 330
x = 330/5
x = 66

Answer 2

understand ?

Answer 3

@kelliegirl33 y 5 first

Answer 4

@kelliegirl33 can u walk me threw this one Tommy averages one hit for each five times at bat. Use a direct variation formula to determine how many hits would be expected from Tommy after 20 times at bat.

Answer 5

Tommy averages one hit for each five times at bat. Use a direct variation formula to determine how many hits would be expected from Tommy after 20 times at bat.

Answer 6

because we are cross multiplying. Take the numerator of one and multiply it by the denominator of the other one and vice versa. Then solve for the missing variable.

1/5 = x/20 (1 hit for 5 times at bat = x hits for 20 times at bat.
cross multiply
(5)(x) = (20)(1)
do you understand so far ?

Answer 7

can you solve for x now ?

Answer 8

no

Answer 9

(5)(x) = (20)(1)
multiply them
5x = 20
now divide by 5 to get x by itself
x = 4
understand ?

Answer 10

you only set it up this way if it varies directly, not if it varies indirectly

Answer 11

If it varies indirectly, you have to use inverse proportion