3 years ago

The variables y and x have a proportional relationship and y=7 when x=2 what is the value of x when y=21

Mathematics

1 answer:

liubo4ka [24]3 years ago

4 0

Answer:

x=6

Step-by-step explanation:

Since y=7 when x=2, we can from here simplify and see that y=3.5 when x=1. If y=21, then we multiply 7 by 3 which is 21, and since we must keep a proportion, we must multiply 2 by 3 and get 6 as the answer.

You might be interested in

Three divided by one-fourth

icang [17]

Answer:

3 divided by 3/4 is 4

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Calculate the surface area of this sphere

lukranit [14]

Answer:

Step-by-step explanation:

8 0

3 years ago

1. <br>Solve the quadratic equation using quadratic formula :<br><br>x2 – 7x + 12 = 0

frez [133]

Answer:

x = 4 and 3

Step-by-step explanation:

[7±√(-7)²-4(1)(12)]/2

x = 4, 3

3 0

3 years ago

What is the answer to |3x + 6| = 2?

kipiarov [429]

Answer:

the answer will be x=-1 1/3,-2 2/3

Step-by-step explanation:

i hope this helps

3 0

3 years ago

Read 2 more answers

Reba used 12 centimeters of tape to wrap 3 presents.How much tape will Reba need in all if she has wrap 6 presents?

AysviL [449]

Answer:

Step-by-step explanation: We have to find out how much centimeters of tape we need to wrap one present, so you have to divide 12 by 3=4

so you need 4 centimeters of tape to wrap one present. Now we have to find out how much tape we need for 6 presents, so we do 4x6=24.

3 0

3 years ago