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

Why didn't george washington sign the declaration?

Salespeople bringing suggestions for a new fast food item to the headquarters of their food manufacturer is an example of ________

A scuba diver is 72 feet below sea level .As the diver rise he stops every 15 feet what integer tells his depth after the first pause?

Addison has 15 fewer pieces of candy than Ronny does. Is this situation modeled by an expression or equation? How do you know?

In the middle of the page draw an equilateral triangle with 2 inch sides and the bottom parallel to the bottom of the page. From the center of the right side d

NEED HELP FAST!!! 4. Which of the following graphs shows a pair of lines that represent the equations with a solution (–2, 5)? (5 points)

In 1619 self-government was established in virginia. this establishment was called __________.

How many centimeters are there in 1.23 x 10-6 kilometers?

help me please!! Find the measure of angle 2. Image attached

The data set gives the number of hours it took each of the 10 students in a cooking class to master a particular technique. {5, 3, 5, 30, 4, 5, 4, 3, 4, 5} The