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Neporo4naja [7]
3 years ago
15

I need help with this question.

Mathematics
2 answers:
ahrayia [7]3 years ago
8 0

Answer:

59

Step-by-step explanation:

We know that all the angles must add up to 180

so we have

38+2b-20+b-15=180

solve for b

3b+3=180

3b=177

b=59

Snowcat [4.5K]3 years ago
4 0

Answer:

b=59

Step-by-step explanation:

angles in the triangle add up to 180

this would mean that

38 +2b-20 + b-15 = 180

if we simplify this then it would be

3+3b= 180

rearrange

3b = 177

b = 59

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nadya68 [22]

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4;  20;  3x² - 4x + 3; 52;  17

Step-by-step explanation:

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f(-4) + g(-1) = (-4)² + 3 + <em>2(-1) + 3</em>  =  16 + 3 <em>- 2 + 3</em> = 20   <em>(since g(x) = 2X + 3)</em>

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f(g(2)):  First, evaluate g(2).  It is g(2) = 2(2) + 3 = 7.  Next, use this output, 7, as the input to f(x):    f(g(x)) = (7)² + 3 = 49 + 3 = 52

g(f(2)):  First, evaluate f(x) at x = 2:  f(2) = (2)² + 3 = 7.  Next, use this 7 as the input to g(x):     g(f(2)) = g(7) = 2(7) + 3 = 17

8 0
4 years ago
Read 2 more answers
I need help so please help me
ELEN [110]
Yes change them both to decimals and 4/5 is .80 then compare .75 to .80 hope i helped
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3 years ago
What is 1/10 of 0.04 is it 0.4 0.004 0.001 or 0.1
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Step-by-step explanation:

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Answer:

A 35°

Step-by-step explanation:

180°-110°=70°

180°-70°-75°=35°

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3 years ago
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