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

£35 in ratio 6 : 1 would be?
Which of the following is NOT a conjugate acid-base pair? Which of the following is NOT a conjugate acid-base pair? a.H2SO3/HSO3b.NH4+NH3 c.C2H3O2d.HC2H3O2 H3O+
Interior and exterior angles
State whether amino acids are found in animals, plants or both? 1) Animals 2) Plants 3) Both
Please help with this geometry question.
"We interrupt your regular programming to bring you a special report. This is Carl Sterns, news anchor for Channel 1. Thirty minutes ago, the notorious crime sy
A cylindrical oil tank 8 ft deep holds 350 gallons when filled to capacity. How many gallons remain in the tank when the depth of oil is 5 1/2ft?
NEED HELP FOR 50 points and possible brainliest if the answer is legitimate. YOU BE THE TEACHER Your friend solves the system of linear equations below. Is your
Kylie was out at a restaurant for dinner when the bill came. She wanted to leave a tip of 32%. What number should she multiply the cost of the meal by to find t
rewrite the following sentence in the active or passive voice form 1. public elementary and secondary schools provide the free education to all people2. the you