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dybincka [34]
3 years ago
9

Solve the system of equations by using substitution.​

Mathematics
1 answer:
katrin [286]3 years ago
8 0

Answer:

(x,y) = (-1,1)

Step-by-step explanation:

Given the equations

y = 2x + 3

x - y = -2

substitute the value of y in the first equation into the second

x - (2x + 3) = -2

x -2x - 3 = -2

-x - 3 = -2

add 3 to both sides

-x = -2 + 3

- x = 1

Divide both sides by -1

x = -1

Substitute into the first equation

y = 2(-1) + 3

y = -2 + 3

y = 1

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What type of triangle is shown in the image?
Sergeu [11.5K]

Answer:

<h2><u><em>Acute isosceles triangle</em></u></h2>

Step-by-step explanation:

What type of triangle is shown in the image?

A triangle with two sides that are each eight units, and one side that is five units. Two angles are seventy degrees, and one angle is forty degrees.

Acute scalene triangle

Obtuse scalene triangle

<h2><u><em>Acute isosceles triangle</em></u></h2>

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4 0
2 years ago
Solve for Y. 9/4y-12=1/4y-4
Lelechka [254]
I believe y equals 4.

9/4y - 12. = 1/4y - 4
+ 12. +12
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2. 2
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4 0
4 years ago
Read 2 more answers
Simplify -12+8+5+(-9)​
Zinaida [17]
FIRST Remove parentheses.
−12+8+5-9

Simplify -12+8 to -4

-4 + 5 — 9

Simplify
−4 + 5 −4+5 to 1
1 — 9

Simplify

-8 is your answer
3 0
3 years ago
Read 2 more answers
Find x please. Thank you!!! :)))
abruzzese [7]

Answer:

<h3>             x = 27°</h3>

Step-by-step explanation:

2x + 2x + 72° = 180°

4x = 108°

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5 0
3 years ago
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Manny's parents came in to eat and he waited on them. Their bill was $45.20, and they left him a 35% tip. How much was his tip?
Sav [38]

Step-by-step explanation:

Use the equation ?/45.20 = 35\100 and what you get is your answer

Hope this helps

8 0
3 years ago
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