dinonugget52556
dinonugget52556 dinonugget52556
  • 19-11-2020
  • Mathematics
contestada


2. The value of y varies directly with x. When y = 45, x = 4. What is the
value of y when x is 7?

2 The value of y varies directly with x When y 45 x 4 What is the value of y when x is 7 class=

Respuesta :

truesm
truesm truesm
  • 19-11-2020

Answer:

direct variation means y=kx (inverse variation is yx=k or y=k/x)

so we are given that:

75=k/2, so k=150 which means:

y=150x  now

y(2.25)=150(2.25)=337.5

Answer Link

Otras preguntas

compare and contrast an electric generator and a battery??
why is mercury usually hard to see without a telescope?
a croquet ball weighs 460 grams. together a golf ball and a croquet ball weigh the same as 11 golf balls.how much does 1 golf ball weigh?
why is mercury usually hard to see without a telescope?
compare and contrast an electric generator and a battery??
A 2-inch-wide frame is to be built around theregular decagonal window shown. At what angles a and bshould the corners of each piece be cut?
A 2-inch-wide frame is to be built around theregular decagonal window shown. At what angles a and bshould the corners of each piece be cut?
At Video Shack, movie rentals cost $3.99 each. the cost of renting three movies and one video game is $0.11 less than the cost of renting five video games. how
I'm having trouble with this:12b+3=-2b-4          I have to simplify the problem
why is mercury usually hard to see without a telescope?