3 years ago

What number must be added to the expression below to complete the square? x2+x

Mathematics

1 answer:

iren2701 [21]3 years ago

4 0

Answer:

answer is 1/4

Step-by-step explanation:

proof is (x-1/2)²= x²-2*1/2*x+1/4= x²-x+1/4

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Maksim231197 [3]

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4 years ago

Make y the subject <br><br> M+y=s<br> Y-2g=n

lutik1710 [3]

1.) y=-M+s
2.) Y=2g+n
Hope this helped :)

8 0

3 years ago

Plz help ASAP!! Explain your answer! I will mark at brainliest!!!

Rina8888 [55]

Answer:

A. 16.12 ft B. 9.64 ft

Step-by-step explanation:

For both of these, you need Pythagorean's Theorem because we have right triangles. In part A, we are given 2 legs and are asked to find the length of the hypotenuse:

$14^2+8^2=PR^2$ and

$196+64=PR^2$

and PR = 16.12 ft

In part B, we are given the length of the hypotenuse and side PQ remains the same:

$14^2+QR^2=17^2$ and

$196+QR^2=289$

$QR^2=289-196$ so

QR = 9.64 ft

3 0

3 years ago

What is the reflection image of (5,-3) across the line y = -x?

azamat

Y=-x
(X,Y) will change to -> (-y,-x)

(5,-3) will change to ->(3,-5)

-3 changed to 3 because -(-3) = 3

So the answer is (3,-5). I recently learn about this one too.

3 0

3 years ago

What is 7x plus 5 plus 8x?

jarptica [38.1K]

Answer:

The answer is 15x+5

Step-by-step explanation:

1. Combine like terms (numbers with the same variable) (just add 7 & 8 and add an x)

2. Bring the rest down

3. After you combined like terms make sure you bring the variable down to it's proper spot

5. Hope this helps.. :)

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3 years ago