1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mars1129 [50]
2 years ago
6

Assume that y varies directly as x then solve. If x = 12 when y = 15 find x when y = 21.

Mathematics
2 answers:
Viefleur [7K]2 years ago
7 0

Answer:

18

Step-by-step explanation:

12 and 15 are both dividable by 3 and 3 apart so if you subtract 21 by 3 than you get 18

SVETLANKA909090 [29]2 years ago
5 0

Answer:

18 or 16.8

Step-by-step explanation:

if x=12 and y=15, this can be written as y=x+3 or y=1.25x

so  your equation becomes x+3=21 or 1.25x=21

subtract 3 from both sides, or divide by 1.25

and you get x=18 or x=16.8

You might be interested in
What are the possible values of x if (4c-5)^2= 49?
kykrilka [37]

Answer:

c = 3                              c = -1/2

Step-by-step explanation:

(4c-5)^2= 49

Take the square root of each side

sqrt((4c-5)^2)= ±qrt(49)

4c-5 = ±7

Separate into two equations

4c-5 = 7           4c-5 = -7

Add 5 to each side

4c-5+5 = 7+5          4c-5+5 =-7+5

4c =12                         4c = -2

Divide by 4

4c/4 = 12/4                     4c/4 = -2/4

c = 3                              c = -1/2

7 0
3 years ago
Read 2 more answers
Two sides of a triangle measure 10cm and 15cm. which measure is possible for the third side
Irina-Kira [14]
The measurement for the third side is 155 cm. Hope this helps! Mark my answer brainliest when u can please thx
6 0
4 years ago
-20=x/3-8 I have no idea how to do this
Doss [256]
The answer for the equation is X=-36
4 0
4 years ago
What is 125/275 reduced to lowest terms?​
Lyrx [107]

Answer:

5/11 is your answer.

Step-by-step explanation:

What you do is you need to find a number that goes in to both 125 and 275.

5 goes in to both of them.

125/5=25

275/5=55

25/55 This can still be reduced by 5.

25/5=5

55/5=11

5/11 is your answer.

4 0
3 years ago
Hoi every1, i tem, and i ned help wit complcation problem
torisob [31]
There is not picture but you can send one to me through message, I'm also new but im a valedictorian!!!
8 0
4 years ago
Other questions:
  • Are the ratios of the number of people to the number of rollercoaster cars in a proportional relationship? Explain your reasonin
    14·1 answer
  • How many milliliters equal 1942 cm?
    11·2 answers
  • I need help on this ASAP no fofo answers
    10·1 answer
  • What is an exquation of the line in slope-intercept form if m=2 and the y-intercept is (0,3)
    13·1 answer
  • It says write the following using am or pm
    12·1 answer
  • URGENT PLEASE ANSWER WILL MARK BRAINLIEST FOR THE FIRST RIGHT ANSWER
    9·2 answers
  • How far is Raleigh from Poplar Bluff?
    11·2 answers
  • Round to the nearest hundredth 5.0927
    8·2 answers
  • Subtract -4a^2-2ab+9b^2 from 7a^2-3ab+5b^2
    12·1 answer
  • Can anyone help me find the area ty
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!