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Gwar [14]
3 years ago
11

What is the value for x

Mathematics
1 answer:
OverLord2011 [107]3 years ago
6 0
Answer: x=9
Explanation: All 3 angles of a triangle add up to 180, so basically the equation is (3x-5)+(7x+5)+90=180.
Then you add your like terms, so 3x+ 7x=10x and -5+5=0, which cancels out. Now we have 10x+90=180, we subtract the 90 from 180 to see what 10x is equal to and we get 90. So 10x=90. We divide 10 from 90 and we get the value of X, which is 9.
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What does x equal to in this problem<br>​
IgorC [24]

Using the triangle, we can find the angle lengths and using those and trig ratios, find the side lengths. Lets say the top side length is "y".

Using the Law of triangles, we can find the missing angle from 180-90-70=20 deg.

Then we can use the Law of sines,

sin(70)/13=sin(20)/y

y=sin(20)*13/sin(70)

y=15.34

Finally, we use the Pythagorean Theorem, (13)^2+(15.34)^2=x^2

x = 20.1

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3 years ago
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mr_godi [17]

We determine line m as follows:

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8 0
1 year ago
Evaluate 8 + 3e when e = 2.<br> Need the Answer
alexandr402 [8]

Answer:

The answer is 14

Step-by-step explanation:

e=2

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14

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3 years ago
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Answer:

I thi k the answers is 108.36

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3 years ago
19-20<br> Please<br><br> Thank u
yan [13]
19-20 = -1 u have to subtract left from tight <span />
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3 years ago
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