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

A reason that Lincoln wanted to capture Richmond during the Civil War was because it was the Confederate capital. it was in a border state. it was part of the A

A cube with edge = 1.00” of an unknown pure substance has a mas off 10.0 oz. what is the density of this substance in g/mL? In kg/L?

As a result of the revolution in her home country, Celia chose to ______________. a. move to the U.Sc. return to her hometownb. join a bandd. join the revolutio

evaluate the extent of African civilization at the great Zimbabwe monument in the following areas mining agriculture medicine weaving metallogy

A washing machine is filling up with water at a constant rate. The rate is 3/4 of a gallon in 1/5of a minute. Don calculated the unit rate to be 3/20 of a gall

FIND g rounded to the nearest degree ??

What are some of the positive contributions of Oliver Cromwell to Western government?

twice the difference of 7 and a number is 4 times the number

First: Calculate the number of moles of Kool-Aid powder needed to make 100mL of a 0.1M solution. 0.1M = xmolC12H22O11 / 0.1L Then: Calculate the num

Help ASAP.... Linear Equations Word Problems .