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abruzzese [7]
3 years ago
12

PLEASE HELP 20+ POINTS I WILL MARK BRAINLIEST

Mathematics
1 answer:
koban [17]3 years ago
7 0

Answer:

Step-by-step explanation:

The two interior angles on the left that are not connected to A add up to A.

80 + 60 = 140

The other way to do this is to realize that A and 40 are supplementary (they add up to 180).

40 + A = 180         Subtract 40 from both sides

A = 180 - 40

A = 140

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Given h(x) = 4x−4, find h(−3)
Hunter-Best [27]

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-16

Step-by-step explanation:

6 0
3 years ago
What is the value of f(g(1))​
jeka57 [31]

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3 years ago
Please help it is a test
irakobra [83]

Answer:

c. -17

Step-by-step explanation:

We have the function f(x) = -2t^2 + 1 and we need to solve for x if f(-3).

Substitute the x in the function with the x in the equation :

f(-3) = -2(-3)^2 + 1

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7 0
3 years ago
Solve 3x+2y=7 and x-4y=-21 by using any method
kupik [55]

Answer:

(- 1, 5 )

Step-by-step explanation:

Using the method of substitution.

Given the 2 equations

3x + 2y = 7 → (1)

x - 4y = - 21 → (2)

Rearrange (2) expressing x in terms of y by adding 4y to both sides.

x = 4y - 21 → (3)

Substitute x = 4y - 21 into (1)

3(4y - 21) + 2y = 7 ← distribute and simplify left side

12y - 63 + 2y = 7

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14y = 70 ( divide both sides by 14 )

y = 5

Substitute y = 5 into (3)

x = (4 × 5) - 21 = 20 - 21 = - 1

Solution is (- 1, 5 )

8 0
4 years ago
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