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spayn [35]
2 years ago
12

Solve (x + 1)2 – 4(x + 1) + 2 = 0 using substitution. u = x 4(x +1) x +1 (x + 1)2

Mathematics
1 answer:
marta [7]2 years ago
4 0

no substituion only rea numbersStep-by-stion:

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The length of the 2 black rods is equal to that of the 3 grey rods. The length of the white rod is equal to the total length of
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Its C!

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hmu if you need anything els

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2 years ago
I need help with this quick
ziro4ka [17]

The best answer for this question is A.

Best of luck.

8 0
2 years ago
Which graph shows data whose r-value is most likely closest to 1?
Aleks04 [339]

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B on ed 2020

Step-by-step explanation:

an r value of 1 would be a graph that has a linear line going up one then

to the right one so the closest to that is the 2nd graph (B)

4 0
2 years ago
Read 2 more answers
In a school of 330 students, 85 of them are in the drama club, 200 of them are in a sports team and 60 students do drama and spo
liq [111]
Let's denote students in D = in the drama club , S<span> = in a sports team </span>
<span>P(D) = 85/330 </span>
<span>P(S) = 200/330 </span>
<span>
P(D and S) = 60/300 </span>
<span>
P(D or S) = P(D) + P(S) - P(D and S)  </span><span>= 85/330 + 200/330 - 60/330 = 15/22 </span>
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P(neither D nor S) = 1- 15/22 </span><span>= 7/22</span>
7 0
2 years ago
Solve the trigonometric equation in the interval [0, 2π). Give the exact value, if possible; otherwise, round your answer to two
svp [43]

Answer:

θ∈{\frac{\pi }{8},\frac{5\pi }{8},\frac{9\pi }{8},\frac{13\pi }{8}}

Explanation:

The given equation is

sin(2\theta )-cos(2\theta )=0

\Rightarrow sin(2\theta )=cos(2\theta )\\\\\therefore \frac{sin(2\theta )}{cos(2\theta )}=1\\\\tan(2\theta )=1\\\\\therefore 2\theta =n\pi +\frac{\pi}{4}\\\\\therefore \theta =\frac{n\pi }{2}+\frac{\pi }{8}

Applying values on 'n' we obtain values of θ that beling to [0,2π)

For n=0, θ=\frac{\pi }{8}

For n=1, θ =\frac{5\pi }{8}

For n=2,θ =\frac{9\pi }{8}

For n=3,θ =\frac{13\pi }{8}

6 0
2 years ago
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