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ludmilkaskok [199]
3 years ago
8

A.45 B.25 C.118 D.93

Mathematics
1 answer:
QveST [7]3 years ago
5 0

Answer: A

Step-by-step explanation:

By the Exterior Angle Theorem, we know that the exterior angle is equal to the sum of the two opposite interior angles.

(2x+3)+25=3x-17          [combine like terms]

2x+28=3x-17                [subtract both sides by 2x]

28=x-17                          [add both sides by 17]

x=45

Now, we know that the answer is A.

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PLEASE HELP!!!!!!!!BRAINLIEST PLUS 50 POINTS
docker41 [41]

Use the quadratic formula to find:

x

=

1

±

√

85

5

Explanation:

5

x

2

−

10

x

−

12

is of the form  

a

x

2

+

b

x

+

c

with  

a

=

5

,  

b

=

−

10

and  

c

=

−

12

This has discriminant  

Δ

given by the formula:

Δ

=

b

2

−

4

a

c

=

(

−

10

)

2

−

(

4

×

5

×

−

12

)

=

100

+

240

=

340

=

2

2

⋅

85

This is positive, but not a perfect square, so the quadratic equation has a pair of irrational roots, given by the quadratic formula:

x

=

−

b

±

√

b

2

−

4

a

c

2

a

=

−

b

±

√

Δ

2

a

=

10

±

√

340

10

=

10

±

2

√

85

10

=

1

±

√

85

5

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pashok25 [27]

Answer:

D. (x-8)(x+2)(x+4)

Step-by-step explanation:

I graphed the expressions below on the graph.

If this answer is correct, please make me Brainliest!

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