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larisa [96]
3 years ago
12

What is the answer to this problem?

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0

Answer:

x = 4.

Step-by-step explanation:

These are exterior  alternate angles which are congruent.

So 21x + 6 = 90

21x = 84

x = 4.

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Factor completely x2 - 8x + 16.
Deffense [45]

Answer:

(X - 4)(x - 4)

Step-by-step explanation:

x2 - 8x + 16

What two numbers multiply to 16 and add to -8

-4 * -4 = 16

-4 +-4 = -8

(x-4) (x-4)

(x-4)^2

6 0
3 years ago
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Evaluate 5^28·5^-32·5^-4<br> A. 17,920<br> B. 0.017920<br> C. 0.000256<br> D. 0.00000256
romanna [79]

Answer:

D 0.00000256

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Please help me with these problems
S_A_V [24]

Answer:

1.a=2

2.  C  x=2  and x=-3

Step-by-step explanation:

The standard form for the quadratic function is  

ax^2 +bx+c

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2x^2 -10 = 7x

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2x^2 -7x-10 = 7x-7x

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2.  The quadratic formula is

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2a


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Lest get the equation in proper form

2x^2 + 2x-12 = 12-12

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Lets substitute what we know

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2(2)

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4

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8/4   and -12/4

2  and -3

8 0
3 years ago
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evablogger [386]
There Are Unlimited Equivalent Ratios To This! For One, We Could Simplify This Ratio To 3,1.Another One Would Be 12,4. You See, It Can Be Any Ratio As Long As It Equals(Simplified) To 3/1. I Hope This Helps!
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Planes Q and R are parallel. Lines a and b are shown on planes Q and R, respectively.
Vlad [161]

Answer: I have included an image of the correct answer.

They are skew lines

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