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sergij07 [2.7K]
3 years ago
15

I need to find the solution of these 4 questions using substitution I'm super stuck

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
3 0
I'll help with the first one. Start by getting x by itself. To do that, take the first equation and subtract y from both sides.
x = 3 - y
Then take the second equation and substitute (3 - y) in for any x value. simplify to get the value of y. then plug in y to the first equation to get the value of x.
(1,2) is the first answer. Follow the same steps for the rest.

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timurjin [86]

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2

Step-by-step explanation:

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4 years ago
One angle of a triangle is 50 degrees greater than the smallest​ angle, and the third angle is 10 degrees less than twice the sm
tia_tia [17]
All 3 angles of a triangle must equal to 180. You can simply set up an equation to solve this and set it equal to 180.

Angle 1 - 50 + x
Angle 2 - x
Angle 3 - 2x -10

50+x+x+2x-10=180
4x+40=180
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x=35

Angle 1 = 50+35= 85
Angle 2 = 35
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60+35+85=180

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4 years ago
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6 0
3 years ago
a woman spent two thirds of her money. she lost two thirds of the remiander and then had $4(aus money) left. how much money did
antiseptic1488 [7]

Step-by-step explanation:

2/3 lost is 1/3 kept

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3 years ago
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