barbiana barbiana
  • 03-07-2019
  • Mathematics
contestada

assume y varies directly as x if y = 7 when x=3 find x when y=21

Respuesta :

eddiezarate12 eddiezarate12
  • 03-07-2019

Answer:

x=9 when y=21

Step-by-step explanation:

I used cross multiplication

7:3=21:x

7x=63

x=9

Answer Link

Otras preguntas

where are mountains usually found?
Why is it important for cardiac muscle to have many mitochondria?
What type(s) of symmetry does this figure have?
find the midpoint between each (8, -9) and (8, 5)
Simplify leaving your answers with positive indices photo has questions
Is north america north or south of the equator
In an 8.00 km race, one runner runs at a steady 11.0 km/h and other runs at 14.8 km/h. How far from the finish line is the slower runner when the fast runner fi
What is the Hcf of 25 and 125
I need examples of cultural diffusion and why
In an 8.00 km race, one runner runs at a steady 11.0 km/h and other runs at 14.8 km/h. How far from the finish line is the slower runner when the fast runner fi