4 years ago

Can somebody help me asap

Mathematics

1 answer:

Tomtit [17]4 years ago

3 0

Answer:

oof ok i tried really hard hope you can read it... hope this makes mlre sense.

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Solve x2 + 8x + 22 = 0 by completing the square.

Liula [17]

Answer:

Step-by-step explanation:

the solution of a squared equation is

x = (-b ± sqrt(b² - 4ac)) / (2a)

in our case

a = 1

b = 8

c = 22

x = (-8 ± sqrt(64 - 88))/2 = (-8 ± sqrt(-24))/2 =

= (-8 ± sqrt(4×-6))/2 = (-8 ± 2×sqrt(-6))/2 =

= -4 ± sqrt(-6) = -4 ± i×sqrt(6)

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3 years ago

How do I create an equivalent expression that includes parentheses so that the value of the expression is 2 for 3+8-4x2-12

natka813 [3]

(3+8-4)×2-12
3+8=11
11-4=7
7×2=14
14-12=2

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3 years ago

9(x) = 2x-1 r(x) = -2x 2 2 Find the value of r(q (2)).

BabaBlast [244]

Answer:

Answer is -6

Step-by-step explanation:

$given \: q(x) = 2x - 1 \\ and \: r(x) = - 2x \\ r(q(2)) = r(2(2) - 1) \\ \: \: = r(4 - 1) \\ = r(3) \\ = - 2(3) \\ = - 6 \\ therefore \: r(q(2)) = - 6$

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION. 

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3 years ago

What is X for? x+20=35-4x

Helen [10]

X+4x=35-20. 5x=35-20. 5x=15. X=3

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3 years ago

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F. The school aims to raise a minimum of $5,250 after paying for all the expenses. If the

bearhunter [10]

You need 105 children to meet the minimum.

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4 years ago