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Anon25 [30]
3 years ago
13

Solve the system using substitution. Show your work. x = -4y + 9 x - y = 4

Mathematics
2 answers:
lesya692 [45]3 years ago
7 0
X = -4y + 9
x - y = 4

- rearrange the second equation to x = 4 + y
- then we can plug it into x for the first equation

4 + y = -4y + 9 — then we solve for y
y = -4y + 5
5y = 5 -> y = 1

we can then plug in 1 (our y value) into the original second equation.

x - 1 = 4 -> x = 5

x = 5 & y = 1
you should put it in a coordinate layout so:
(5,1)

hope this helped !!
FromTheMoon [43]3 years ago
6 0

Answer:

please what should we found? is it the value of ×or y

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Answer:7/10 x 10/7 = 70/70 = 1

Step-by-step explanation:

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Two angles are supplementary. one angle is 60° more than twice the other. find the angles
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Let the "other" angle be x. Then we can set up the equation: 2x + 60 + x = 180, because supplementary means that the angles add up to 180 degrees.
We get:
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So one angle is 140 degrees and the other angle is 40 degrees.
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==jding713==
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3 years ago
At the market, he spends $5.58 on red potatoes and $4.68 on yellow potatoes. If each type of potato costs $0.90 per pound, how m
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11.4pounds

Step-by-step explanation:

(5.58+4.68)÷0.90

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What is the final transformation in the composition of transformations that maps pre-image GHJK to image G'H"J"K"? a translation
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B

Step-by-step explanation:

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3 years ago
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from the point p(-2,4) if PQ is drawn perpendicular to line 7x-24y+10=0,find the eqaution of the lin PQ . also determine the len
zubka84 [21]

Answer:

7y+24x = -12

Step-by-step explanation:

Equation of line PQ in point slope form is expressed as;

y -y0 = m(x-x0)

m is the slope of {Q

(x0, y0) is the point on the line

Given the line 7x-24y+10=0

Get the slope

-24y = -7x -10

y = -7/-24 x - 10/-24

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Slope = 7/24

Slope of the line PQ perpendicular to it = -24/7

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This gives the equation of the line PQ

5 0
3 years ago
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