7554577 7554577

03-06-2021
Mathematics

contestada

If y varies directly as x and y = 9 when x = –3, find y when x = 40.

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

03-06-2021

Answer:

y = -120

Step-by-step explanation:

Direct variation is

y = kx where k is a constant

9 = k(-3)

Divide each side by -3

9/-3 = k

-3 = k

y = -3x

Let x = 40

y = -3(40)

y = -120

Answer Link

Otras preguntas

How do the symptoms of depression compare to those of attempted suicide?

Wearing this colour after Labour Day might get you a ticket from a fashion cop! A. Pale Pink B. White C. Lime Green D. Gray

Which of the following would be the most effective long-term solution to fighting desertification in the Sahel? a. planting trees throughout the Sahel b. cons

list the units from most precise to least precise

What fighting methods did the colonists use against the British troops marching back to Boston from Concord?

For whom did the Massachusetts Bay Colony provide a safe religious haven?

What was the Enlightenment?

If the sperm gamete that fertilizes an egg has a(n) _____ chromosome, it will form male offspring. X Y XY XX

Roberto says that the opposite of a certain integer is -5. cindy concludes that the opposite of an integer is always negative explain cindy error

Jessie has a box of 1,000 marbles. He has 75 yellow marbles, 230 red marbles, 331 blue marbles, and 364 green marbles. What fraction of his marbles are yellow?