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zvonat [6]
3 years ago
13

GIVING 20 POINT BRAINLIST IF YOU ANWSER THE FULL QUESTION!

Mathematics
1 answer:
Ne4ueva [31]3 years ago
4 0

Answer: x=-11  x=5

Step-by-step explanation:

<h3>(x+3)^2=72-8</h3><h3>(x+3) (x+3) = 64</h3><h3>x(x+3) +3(x+3) = 64</h3><h3>x^2 +3x+3x+9=64</h3><h3>x^2+6x+9=64</h3><h3>0=x^2+6x+9-64</h3><h3>0=x^2+6x-55</h3>

ok you look for two numbers that will multiply to -55 and also when added or subtracted it will give +6 and those 2 numbers where:

<h3>11*-5= -55    11 -5 =6</h3><h3>0=(x+11) (x-5)</h3><h3>x+11=0        x-5=0</h3><h3>x= -11           x= 5</h3><h3>YOU CAN GRAPH IT ON DESMOS TO FIND YOUR X-INTERCEPTS</h3>
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Find the cube roots of 125(cos 288° + i sin 288°)
kow [346]
Let r(cos O + i sin O)  be a cube root of 125(cos 288 + i sin 288)
then
r^3(cos O + i sin O)^3  =  125(cos 288 + i sin 28)

so r^3 = 125  and  cos 3O + i sin 3O  =  cos 288 + i sin 288

so r  = 5  and 3O = 288 + 360p and O = 96 +  120p

so one cube root is   5 (cos 96 + i sin 96)

Im a little rusty at this stuff Its been a long time.

Im not sure of the other 2 roots

sorry cant help you any more


3 0
2 years ago
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levacccp [35]

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260

Step-by-step explanation:

8 0
3 years ago
C. Write the sum in standard form 13 tenths + 8tenths+ 32hundredths
Alecsey [184]

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6 0
2 years ago
A circle is centered at the origin and contains the point (-6, -8). What is the area of this circle?​
gogolik [260]

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Step-by-step explanation:

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olga2289 [7]
The answer to your question is D
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