ellie6705 ellie6705

03-01-2018
Mathematics

contestada

If y varies directly with x and y=30 when x=-10, find the value of x when y=4

A. -4/3
B. 4/3
C. -3
D. -12

Explain

Respuesta :

habeebmusa24 habeebmusa24

03-01-2018

If y∞x then y=kx where k is constant to find k
k=y/x then substitute the values
k=30/-10=-3 to find x when y is 4
x=y/k=4/-3=-4/3 option A

Answer Link

Otras preguntas

A sports club is holding a fundraiser dinner. The function graphed models the profit, y, in dollars, from selling x tickets. Select True or False to describe ea

What makes fundamentalism different from other religious expressions??

The population of a particular country was 25 million in 1982; in 1992, it was 35 million. The exponential growth function describes the population of this cou

This Question is too challenging for me! Please help me get the answer!

In the triangle below, what ratio is tan θ? 12 over 13 5 over 13 5 over 12 13 over 5

how does Odysseus prove to be an epic hero?

Can someone please help me with number 22?

Use ratio language to describe the relationship between 2 dogs and 1 cat

Instructions:Select the correct answer. The table shows the price of apples in the local market. What is the cost of 12 pounds of apples? Apples (pounds) Price

y-7=2y (x-1) write the equation in standard form