Seudónimo Seudónimo
  • 03-03-2016
  • Mathematics
contestada



If y is proportional to x and y = -15 when x = -20, what is the value of x when y = 12?

Respuesta :

Alex66 Alex66
  • 03-03-2016
y= k·x
if y= -15 and x= -20
⇒ -15 = k·(-20)
⇒ k = -15/-20 
⇒ k = 3/4

What is the value of x when y=12 ?

x= ?
k= 3/4
y = 12

y = kx
⇒ x = y/k
⇒ x = 12/(3/4)
⇒ x = 12· (4/3)
⇒ x = 16

Answer Link

Otras preguntas

How many significant figures are in 0.0000003 g?
how can we find electronic acording to boher atomic modrl​
The cost of the piece of granite is $137.70. What would you expect to pay for a similar piece of granite that is 108 inches by 60 inches?
solve pls for 50 points
What is the value of the remainder if 4x4 - 7x3 + 2x2 - 5x + 3 is divided by x - 2?
Question 1 of 5 Read this excerpt from "Everyday Use": No doubt when Dee sees it she will want to tear it down. She wrote me once that no matter where we choose
Find the constant of proportionality on the graph. Fast please! marking brainiest!
A bread recipe calls for a flour to water ratio of 10 to 7. If 600 grams of flour is used in this recipe, how many grams of water need to be added. Use the numb
1 Select the correct text in the passage. Zoe is analyzing her goals, values, and skills to explore careers in fashion design. Which statement describes why it
What problem arose from the way the VP was selected in our original system?