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adell [148]
3 years ago
14

Can some one help me solve for X?

Mathematics
2 answers:
Korvikt [17]3 years ago
8 0

Answer:

x = 20

Step-by-step explanation:

The two angles are complementary angles, which means they add to 90 degrees

2x+7 + 43 = 90

Combine like terms

2x+50 = 90

Subtract 50 from each side

2x+50-50 = 90-50

2x = 40

Divide each side by 2

2x/2 = 40/2

x = 20

Oliga [24]3 years ago
7 0

Answer:x=20

Step-by-step explanation:

The two angles are complementary angles, which means they add to 90 degrees

2x+7 + 43 = 90

Combine like terms

2x+50 = 90

Subtract 50 from each side

2x+50-50 = 90-50

2x = 40

Divide each side by 2

2x/2 = 40/2

x = 20

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Which ordered pair is a solution to the system of equations y=x+3 and y=x^2-x
Elenna [48]

For this case we have the following system of equations:

y = x + 3\\y = x ^ 2-x

Equating the equations we have:

x ^ 2-x = x + 3\\x ^ 2-x-x-3 = 0\\x ^ 2-2x-3 = 0

To find the solutions we factor the equation. To do this, we look for two numbers that, when multiplied, result in -3 and when added, result in -2.

These numbers are: -3 and +1

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Thus, the factored equation is:

(x-3) (x + 1) = 0

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(x_ {1}, y_ {1}): (3,6)\\(x_ {2}, y_ {2}): (-1,2)

ANswer:

(x_ {1}, y_ {1}): (3,6)\\(x_ {2}, y_ {2}): (-1,2)

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