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

which is a true statement about the open door policy
Kate ate 1/4 of her orange. Ben ate 2/4 of his banana. Did Kate and Ben eat 1/4 + 2/4 = 3/4 of their fruit? Explain
Those who utilize the Internet (e.g., chat rooms) to exploit children for sexual purposes are commonly referred to as: A. online predators. B. Dirty Harrys. C
What type of change occurs when a new amendment is added to the constitution?
the area of a window measures 336 square inches. if the window is 16 inches wide,how long is the window
3x-4y=-31 x+y=6 how do you solve this equation out I'm so confused please help
In 1989, tens of thousands of Chinese began a protest _____. along the Great Wall in Shanghai in Tiananmen Square in Guangzhou
what is 563 rounded to the nearest tens?
You have 59 total coins for a total of $12.05. You only have quarters and dimes. How many of each coin do you have?
Which of these was the most noticeable symbol of the "Iron Curtain"? A) Great Wall B) Berlin Wall C) 38th Parallel D) 17th Parallel