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Advocard [28]
3 years ago
7

System: -5x + 3y = 6 Y=7x - 14 (Solve with substitution) Find the x,y

Mathematics
1 answer:
Aleks04 [339]3 years ago
4 0

Answer:

x=3

y=7

Step-by-step explanation:

solve for the first variable in one of the equations, then substitute the result into the other equation.

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A ream of paper contains 500 sheets of paper. Norm has 373 sheets of paper left from the ream. Express the portion of a ream Nor
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Write an equation in slope-intercept form of the line with slope −4/5 that contains the point (−5,−4).
Dmitry [639]

Answer:

B

Step-by-step explanation:

<u>Slope-intercept form:</u>

y= mx +c, where m is the slope and c is the y-intercept.

Given that the slope is -4/5,

y =  -  \frac{4}{5} x + c

To find the y-intercept, substitute a pair of coordinates.

When x= -5, y= -4,

- 4 =  -  \frac{4}{5} ( - 5) + c \\  - 4 =  4 + c \\ c =  - 4  -  4 \\ c =  - 8

Thus, the equation of the line is

y =  -  \frac{4}{5} x - 8

6 0
3 years ago
Solve 9(8 - x) = 3x.
bulgar [2K]

Hello - let's do this step by step. Show your work.

You're asking: 9(8−x)=3x.

Now, simplify both sides of the equation.

9(8−x)=3x

(9)(8)+(9)(−x)=3x (To do that, distribute)

72+−9x=3x

−9x+72=3x

Now,  subtract 3x from both sides.

−9x+72−3x=3x−3x

Simplify,

−12x+72=0

After, subtract 72 from both sides.

−12x+72−72=0−72

−12x=−72

Last thing, divide both sides by -12.

-12x/12 = -72/-12

Divide.

Therefore, you have <u>x = 6</u> as your final answer.

7 0
3 years ago
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