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Mars2501 [29]
2 years ago
7

Help me pls find this answer I doubt mine is right ​

Mathematics
1 answer:
Gnom [1K]2 years ago
8 0

Answer:

whats the question?

comment so i can help:)

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To factor the quadratic expression x^2−8x−10 by completing the square, what value would be added? A. 64 B. 8 C. 16 D.-16
Elan Coil [88]

Answer:

C

Step-by-step explanation:

When completing the square, we essentially want to create a perfect square trinomial by adding a constant.

If we have the following expression:

x^2+bx

And we want to complete the square, we will need to divide the b-coefficient by half and then square it.

Thus, the added term should be:

(b/2)^2

In the given equation, we have:

(x^2-8x)-10

The b term here is 8. Therefore:

(8/2)^2\\=(4)^2\\=16

The value we would add would be 16.

The answer is C.

Further notes:

To complete the square, add 16 like mentioned earlier. However, we also need to subtract 16 to balance things out:

(x^2-8x)-10\\=(x^2-8x+16)-10-16\\

The expression inside the parentheses is now a perfect square trinomial. Factor it:

=((x)^2-2(4)(x)+(4)^2)-26\\=(x-4)^2-26

And we are done!

4 0
3 years ago
Read 2 more answers
Answer ASAPPPP pls pls
xeze [42]

Answer:

60WPM

Step-by-step explanation:

120/2 = 60

4 0
3 years ago
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Maya paid $11.88 for a 2.38-pound bag of shrimp at one store. The following week, she paid $26.47 for a 5.08-pound bag at anothe
lbvjy [14]

Answer:

2.38 lb bag = 4.99/lb   5.08 lb bag = 5.21/lb  The 2.38 is the better buy

Step-by-step explanation:

11.88/2.38 = 4.99

26.47/5.08 = 5.21

4.99 is cheaper than 5.21 so the 2.38 lb bag is better buy

6 0
2 years ago
one company makes inflatable swimming pools that come in four sizes of rectangular prisms. the length of each pool is twice the
horrorfan [7]
The equation to find out the volume in this case is V=x*x*2x, or V=2x^3. Use this we can get that the volumes would be 16, 54, 128, and 250.
5 0
3 years ago
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Which of the following explains the relationship between angles B and C? Lines JK and JM intersect at point J, creating four ang
zhenek [66]

Answer:

Adjacent angles

4 0
2 years ago
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