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Vladimir [108]
3 years ago
12

Find the value of x in each case. PLEASE SHOW WORK!!!

Mathematics
1 answer:
myrzilka [38]3 years ago
4 0
m\angle BCA=180^o-5x

\angle CAB=\angle ACD\\\\m\angle CAB=33^o

In the triangle ABC:

m\angle ABC+m\angle BCA+m\angle CAB=180^o\\\\2x+180^o-5x+33^o=180^o\\\\-3x+213^o=180^o\ \ \ |-213^o\\\\-3x=-33^o\ \ \ |:(-3)\\\\x=11^o

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Given the function <img src="https://tex.z-dn.net/?f=f%28x%29%3Dx%5E2-2x-5" id="TexFormula1" title="f(x)=x^2-2x-5" alt="f(x)=x^2
juin [17]

Answer:

- 1

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

\frac{f(b)-f(a)}{b-a}

Here [ a, b ] = [ - 5, 6 ] , then

f(b) = f(6) = 6² - 2(6) - 5 = 36 - 12 - 5 = 19

f(a) = f(- 5) = (- 5)² - 2(- 5) - 5 = 25 + 10 - 5 = 30

Then

average rate of change = \frac{19-30}{6-(-5)} = \frac{-11}{6+5} = \frac{-11}{11} = - 1

6 0
3 years ago
The number of terms in a binomial expansion
Sidana [21]
It should be one more than the power

Ex(x+y)^3=x^3+3x^2y+3xy^2+y^3
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5 0
4 years ago
Read 2 more answers
1.9 x (1/4) answer as a fraction
Elan Coil [88]

Answer:

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7 0
3 years ago
Find the 4th term. -2n2 - 4n +5
alisha [4.7K]

Answer: -43

Step-by-step explanation:

-2(4*4)= -32

-32-(4*4)= -48

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6 0
3 years ago
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Dimas [21]
The last one is the correct answer.
7 0
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