rockyhascurls rockyhascurls
  • 21-10-2020
  • Mathematics
contestada

Suppose y varies directly as x, and y = 7 when x = 2. Find x when y = 21.

Respuesta :

Garden555 Garden555
  • 22-10-2020

Answer:

Step-by-step explanation:

y = k x X

7 = k x 2

7/2 = k...............1

hence y = 7/2x (substituting eq 1)

y = 21

therefore, x = 2y/7

x = 2 x 21

         7

x = 2 x 3

x = 6    

Ver imagen Garden555
Answer Link

Otras preguntas

Ted says that 3/10 multiplied by 100 equal 300 thousandths is he correct use a place value chart to explain your answer
Josh wants to put a fence around his rectangular garden. The garden is 6 feet bt 15 feet. How much fencing must he purshase ?
5.2 more than the product of seven and a number
The shrew would be considered ____ for the snake and hawk.
What ideas arose in ancient Greece that contributed to the development of democratic values in the modern world?
If a woman runs 100 meters north and then 70 meters south, what is her total displacement?
Find the sum. ( - x - 2y - 4z ) + ( 7x - 6y - 6z )
What scientists do that is the basis for their investigations?
Which expressions are equivalent to 4(4a+5) Select: 16a+5 16a+20
Write 12,430,090in expanded form