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Ratling [72]
3 years ago
7

Use substitution to solve.

Mathematics
2 answers:
creativ13 [48]3 years ago
5 0

Answer:

The answer is C

Good luck

Anarel [89]3 years ago
3 0

Answer:

B

Step-by-step explanation:

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Solve x2 – 8x = 3 by completing the square. Which is the solution set of the equation? HURRY PLZZZZ
marta [7]

x²-8x=3

x²-8x+16=3+16=19

(x-4)²=19

x-4=±√19

x=4±√19

x=8.3589 approx or x=-0.3589 approx {4-√19,4+√19} or {-0.3589,8.3589}

7 0
3 years ago
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If Q(x) = x2 – 2 – 2, find Q(-3).
dusya [7]

Answer: A (10)

Step-by-step explanation:

Plug in Q(-3) into formula x^2-x-2

(-3)^2-(-3)-2= 9+3-2

=10

7 0
3 years ago
This isosceles triangle has two sides of equal length, a, that are longer than the length of the base, b. The perimeter of the t
Ipatiy [6.2K]
B = base length
a = length of the other two equal sides

The value of 'a' is larger than the value of b. This is because the base is shorter than the other two equal sides. We're told that "one of the longer sides is 6.3 cm", meaning that a = 6.3

Replace every copy of 'a' in the given equation with 6.3; isolate b
2*a + b = 15.7
2*6.3 + b = 15.7
12.6 + b = 15.7
12.6 + b - 12.6 = 15.7 - 12.6 ... see note below
b = 3.1

note: I subtracted 12.6 from both sides. This is using the subtraction property of equality. 
7 0
3 years ago
What is the multiplicative inverse of 1/2?<br><br> 2<br> -1/2<br> -2
TEA [102]

Answer:

-2/1

Step-by-step explanation:

8 0
3 years ago
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PLS HALLP (20 POINTS)
german

Answer:

The value of k is -2

Step-by-step explanation:

The cut point with the y axis for both graphs occurs when x = 0

We then have:

For f (x):

The cut point for the y axis is:

For g (x):

The cut point with the y axis is:

The value of k is given by the vertical displacement of graph k units.

We then have:

Let's clear k:

I know that this is not the answer you are looking for but maybe you can use the step-by-step explanation to figure it out

7 0
3 years ago
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