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Komok [63]
3 years ago
10

Can someone also explain how to get the answer?

Mathematics
2 answers:
max2010maxim [7]3 years ago
8 0
\dfrac{(n-2)\cdot180}{n}\\\\
\dfrac{(18-2)\cdot180}{18}=16\cdot10=160
kherson [118]3 years ago
4 0
Look at the picture

\beta=360^o:18=20^o\\\\2\alpha+\beta=180^o\ (a\ triangle)\\\\2\alpha+20^o=180^o\ \ \ |subtract\ 20^o\ from\ both\ sides\\\\2\alpha=160^o\\\\2\alpha\ is\ an\ interior\ angle.\\\\Answer:\boxed{160^o}

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Analyze the diagram below and complete the instructions that follow.
Jlenok [28]

Step-by-step explanation:

scale \: factor =  \frac{7}{28}  =  \frac{1}{4}  \\

ratio \:of \:surface \:areas\\=\frac{2[5\times 7 + 7\times 3+3\times 5]}{2[20\times 28+ 28\times 12+12\times 20] }\\\\=\frac{[35 + 21+15]}{[560+ 336+240] }\\\\=\frac{71}{1136}\\\\=\frac{1}{16}\\\\= 1\: :\: 16

3 0
3 years ago
Consider the sequence of steps to solve the equation:
pav-90 [236]

Answer:

Division Property of Equality

Step-by-step explanation:

→In Step 4, it is shown that the equation is:

3x = 30

→However, to solve for x, you must get it by itself. This means you need to get rid of the 3 that's being multiplied. So since the 3 is being multiplied to x, you must do the opposite of multiplication, which is division.

→As you can see, the total of 30 is decreased in Step 5, since it has been divided by 3, giving you a total of 10.

This shows that the property of equality that yields Step 5 is the <u>Division Property of Equality.</u>

4 0
2 years ago
Expand and simplify 3(2a+3b)+2(a+2b)
ICE Princess25 [194]

Answer:

8a+13b

Step-by-step explanation:

First start by multiplying the coefficient with the parantheses.

3(2a+3b)+2(a+2b)

6a+9b+2a+4b

8a+13b

This equation cannot be further simplified.

5 0
3 years ago
Read 2 more answers
HELP ASAP
balandron [24]

56

Step-by-step explanation:

The whole angle is 132 and half of it is 76, so the other portion would be 56 i believe.

4 0
2 years ago
Let f(x) = 4x + 3 and g(x) = -2x + 5. Find fog 5
Oxana [17]

Answer:

-17

Step-by-step explanation:

first find g(5) = -2(5)+5 = -5

then f(-5) = 4(-5)+3 = -17

6 0
2 years ago
Read 2 more answers
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