3 years ago

What is the vertex form of the function y = x2 + 8x – 3

Mathematics

2 answers:

bezimeni [28]3 years ago

7 0

The answer would be

y=(x+4)^2−19

kkurt [141]3 years ago

4 0

Answer:

the answer is y=(×+4)^2 -19

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B is the midpoint of AC. If AB= X +5 and BC = 2X -11, find the measure of AB

Murljashka [212]

First, you know that B is the mid point, meaning AB is equal to BC. Therefore, you can set up the equation: x+5=2x-11. Then, you solve for x. Once you are done solving, you should get 16. Hope this helps!

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3 years ago

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Multiply (5 + 3i)(5 − 3i) 16 + 15i 16 − 15i 16 34

Annette [7]

Answer:

(5 + 3i)(5 − 3i) = 34

Step-by-step explanation:

The multiplication of two identical binomials who have different symbol, can be solved using the factoring case of a difference of squares:

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So, in this case:

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Remember that $i=\sqrt{-1}$

So: $i^{2}=-1$

We replace on the polynomial:

$=25-9.(-1) = 25+9=34$

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zepelin [54]

The answer is C hope this helped u out

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3 years ago

Use a formula to find the surface area of the cylinder . Use 3.14 for π.

Arlecino [84]

Answer:

I am so sorry

Step-by-step explanation:

I dont really know what it is but I think it is 21.98 you do 7 times 3.14

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3 years ago

90% of what number is 57

aliina [53]

To solve this, set up the equation, 90% of x being .9*x=57. Then, solve for x, x=57/.9= $6 \frac{1}{3}$ =6.333

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