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SVETLANKA909090 [29]
3 years ago
7

Segment AB is a line segment on a number line. Endpoint A is at –18, and the midpoint is at -6.

Mathematics
1 answer:
OverLord2011 [107]3 years ago
8 0
It should just be 6 using algebra
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How do you evaluate sin(13π/12)?
Alekssandra [29.7K]

13pi/12 lies between pi and 2pi, which means sin(13pi/12) < 0

Recall the double angle identity,

sin^2(x) = (1 - cos(2x))/2

If we let x = 13pi/12, then

sin(13pi/12) = - sqrt[(1 - cos(13pi/6))/2]

where we took the negative square root because we expect a negative value.

Now, because cosine has a period of 2pi, we have

cos(13pi/6) = cos(2pi + pi/6) = cos(pi/6) = sqrt[3]/2

Then

sin(13pi/12) = - sqrt[(1 - sqrt[3]/2)/2]

sin(13pi/12) = - sqrt[2 - sqrt[3]]/2

7 0
3 years ago
Solve the equation<br> 5x+6=2(2x - 3)<br> X=
Serga [27]

Answer:

x =  - 12

Step-by-step explanation:

5x + 6 = 2(2x - 3) \\ 5x + 6 = 4x - 6 \\ 5x - 4x =  - 6 - 6 \\ x =  - 12

7 0
1 year ago
The average cost when producing x items is found by dividing the cost function, C(x), by the number of items, x. When is the ave
Mazyrski [523]
Answer will have to be     ( B )
7 0
2 years ago
Read 2 more answers
3)<br> Solve the quadratic equation by taking square roots.<br> 3x^2 – 8 = 12
iris [78.8K]

Answer:

The answer is in the photo

Step-by-step explanation:

8 0
3 years ago
Solve the system using an equivalent system
DerKrebs [107]
Add y to both sides in 1st equation
-2x=y
sub -2x for y in2nd equation
3x-(-2x)=10
3x+2x=10
5x=10
divide 5
x=2

sub back
-2x=y
-2(2)=y
-4=y

(x,y)
(2,-4)
C is ans
8 0
3 years ago
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