3 years ago

Suppose y varies directly as x and y=21 when x=7. which is an equation relating x and y

Mathematics

1 answer:

astra-53 [7]3 years ago

8 0

Y varies directly as x: y=kx, k is a constant.
when x=7, y=21, so we know k=3
therefore, the equation is y=3x

You might be interested in

What is the supplement angle of 100?

aleksley [76]

Answer:

An angle measuring 100 degrees would be supplementary to any angle measuring 80 degrees, but it cannot be called supplementary by itself. "Complementary" and "supplementary" are terms that describe the relationship between two angles. They are comparative words like "larger."

Step-by-step explanation:

5 0

2 years ago

Solve: p - 8 = -16 20 characters rule

vlada-n [284]

Answer: p-8=-16

p=-16+8

p=-8

6 0

2 years ago

Read 2 more answers

Simplify -|-5 + 2|. A.-7 B.-3 C.3 D.7

larisa86 [58]

You're answer is (B).-3.

-|-5+2|

-5+2=-3

=|-3|

=-3

5 0

2 years ago

Cell phone Plan A costs$70 per month and comes with a free$500 phone. Cell phone Plan Bcosts$50 per month but does not come with

timofeeve [1]

Answer:

Step-by-step explanation:

A = 70*M

B = 500 + 50*M

Costing the same means equal, so we have the equation:

70M = 500 + 50M

-50M -50M

20M = 500

20M / 20 = 500 / 20

m- 25 months

5 0

2 years ago

What is 0.125 written as a fraction in simplest form?

Ierofanga [76]

1/8

hopefully this is helpful

8 0

2 years ago