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Svetlanka [38]
3 years ago
9

What is this answer because I can't figure this out and my math teacher doesn't explain it very well

Mathematics
2 answers:
iVinArrow [24]3 years ago
5 0
72+72+144 and 144 minus 360 equals 216 so half of 216 is 10. so the top and bottom are 108 degrees.
Effectus [21]3 years ago
3 0
72 = x+15 
-15      -15
57 = x
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Angle is in standard position and (-6, 7) is a point on the terminal side of 0. Whatis the exact value of sin 8 in simplest form
elena-s [515]

You are asked to find

\sin (\theta)=\sin (\theta-90^{\circ})

The sin of an angle equals the opposite side divided by the hypotenuse, so the next drawing will help to find the answer:

\sin (\theta)=\frac{7}{\sqrt[]{6^2+7^2}}=\frac{7}{\sqrt[\square]{85}}

The hypotenuse is the square root of 6 to the square plus 7 to the square because of the Pythagorean theorem. In order to have a rational denominator:

\frac{7}{\sqrt[]{85}}=\frac{7\cdot\sqrt[\square]{85}}{85}=\frac{7\cdot\sqrt[]{17}\cdot\sqrt[\square]{5}}{17\cdot5}

Because

4 0
1 year ago
What is the value of the function f(x) = 2x^2 + 3 when x = 2?
professor190 [17]
2*2^2+3                                  PEMDAS
2*4+3
8+3
11
 
Answer is 11

8 0
4 years ago
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Which of the following term describes √36 ? *
Cerrena [4.2K]

Step-by-step explanation:

A. Rational Number

square root 36 = 6/1

It can be write in a ratio.

7 0
3 years ago
Indicate in standard form the equation of the line passing through the given points.
Lynna [10]
(-2,2)(5,1)

slope(m) = (1 - 2) / (5 - (-2) = -1 / 7

y = mx + b
slope(m) = -1/7
use either of ur points....(5,1)....x = 5 and y = 1
now sub and find b, the y int
1 = -1/7(5) + b
1 = -5/7 + b
1 + 5/7 = b
7/7 + 5/7 = b
12/7 = b

equation is : y = -1/7x + 12/7....but we need it in standard form...

y = -1/7x + 12/7
1/7x + y = 12/7
x + 7y = 12 <== standard form
5 0
4 years ago
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Consider this expression
Sloan [31]

Answer:

\displaystyle \large{(x + 9)(x - 8)}

The value of a is 9 and b is -8

Step-by-step explanation:

\displaystyle  \large{(x + a)(x  + b) =  {x}^{2}  + (a + b)x + ab}

We need to find two numbers that add up or subtract off to 1.

Then we also use the same two numbers that multiply and get -72.

Let's see:-

  • 9 and -8 seem like correct values.

Because 9+(-8) is 9-8 = 1

And 9(-8) is -72.

Therefore:

\displaystyle \large{ {x}^{2}  + x - 72 = (x + 9)(x - 8)}

The value of a is 9 and the value of b is -8 according to form of (x+a)(x+b)

8 0
3 years ago
Read 2 more answers
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