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

PLSS HELP I NEED THIS ASAP Find angle relationship and solve for X!! (WILL GIVE BRAINLIEST)

Which factored form is equivalent to the expression x^2 + 5x + 4? A) (x + 2)(x + 3) B) (x + 4)(x + 1) C) (x + 5)(x − 1) D) (x − 4)(x + 1)

11/12-5/6 is it closer to 0/1/2

A rival of Bernini's was one of the leading Baroque architects in Italy. The structures he designed and created are more complex than Bernini's, and he often ma

PLEASE HELP 100 PTS - Use the information from your production possibilities schedule to create your production possibilities curve by filling in the following

Write the correct ratio (fraction) for each triangle.

If methods used in molecular systematics were not developed what would be the effect on the study of systematics?

WILL GIVE BRAINLIEST find the minimum value of the parabola y=x^2+42/5

Determine whether each of the following sequences are arithmetic, geometric or neither. If arithmetic, state the common difference. If geometric, state the comm

Mr. Beber feeds his dog 1/5 of a cup of dog food each day. How long will 9 cups of dog food last?