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Serggg [28]
4 years ago
13

Tell whether x and y show direct variation y=3x

Mathematics
1 answer:
bija089 [108]4 years ago
4 0

Answer:

Yes, they do

Step-by-step explanation:

Yes, y = 3x represents direct variation.  The fact that the line (graph) of y = 3x goes through the origin (0,0) reinforces this statement.

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What is the solution of 3x+y=2 & 4y=12-12x?
lorasvet [3.4K]

Answer:

Step-by-step explanation:

3x+y=2............(1)

4y=12-12x........(2)

Making y as subject in (1) and substitute in (2)

y = 2 - 3x......(3)

4(2 - 3x) = 12-12x

8 - 12x = 12 - 12x

12x - 12x = 12- 8

0 = 4

So no solution since variable cancelled out

5 0
4 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%2B%204%7D%7B3%7D%20%20%3D%206" id="TexFormula1" title=" \frac{x + 4}{3} = 6
Gwar [14]
Multiply both sides by 3 to cancel out the 3 in the denominator of the left side of the equal sign. You get:

x + 4 = 18

Now subtract 4 from both sides to get variables one side, constants on the other. 

x = 18 - 4
x = 14

Your answer is x = 14
8 0
4 years ago
angle A and angle B are supplementary angles. If m angle A=(5x+25)^ and m angle B=(3x+19)^ then find the measure of angle B .
Alona [7]

Answer:

B=70

Step-by-step explanation:

A+B=180

5x+25+3x+19=180

8x+44=180

8x=136

x=17

B=3(17)+19

B=51+19

B=70

8 0
4 years ago
Write the percent as a fraction or mixed number in simplest form. 72.5
barxatty [35]

Answer:

29/40

Step-by-step explanation:


6 0
3 years ago
Find the perimeter of a triangle with sides of 12 inches, 14 inches, and 16 inches. Enter only the number of inches in the answe
Dima020 [189]

Answer:

42

Step-by-step explanation:

because perimeter means add, so add all the number up to get the answer 42

8 0
3 years ago
Read 2 more answers
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