suppose x and y vary inversely and y=10 when x=4. write a function that models the variation then find y when x =90

1 answer:

4 0

X = k/y
4 = k/10
k = 4 x 10 = 40
Thus, x = 40 / y

90 = 40 / y
y = 40/90 = 4/9

You might be interested in

amid [387]

You would need 14 small trucks

5 0

2 years ago

stiks02 [169]

You times 4 by everything inside the parentheses, so the answer would be as follows. 16a + 20b - 12

4 0

2 years ago

Shalnov [3]

The answer for b is 100

7 0

2 years ago

Mazyrski [523]

Answer:

$\pi \: \: \ \sqrt{2} \: \: \sqrt{72 } \: \: \: \: 9.2434871...$

3 0

2 years ago

Alex73 [517]

Well $25 is the standard price initially.

$10 is added every hour as a constant rate.

Therefore a. 25 + 10h is the right expression

4 0

3 years ago