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azamat
3 years ago
13

Can you help me with question 8,9,10,14 please

Mathematics
1 answer:
marishachu [46]3 years ago
7 0
#8 is correct

#9 is wrong

Answer :

{ - 2x}^{2}  - 8x

#10 is correct

#14 is correct I think.
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How would you know the answer (important)
SSSSS [86.1K]

Answer:

okay so I can't see the last option on ur sheet but when u graph this equation the point that lies on the curve is (2,-3) so that is the vertex but if I move up this curved line it passes through the Y axis at (0,-1), the Last answer that I can't see it wouldn't happen to be (-1,6) would it

7 0
1 year ago
- 18 = -3x + 6<br> Plz help
exis [7]

Answer:

8 =x

Step-by-step explanation:

- 18 = -3x + 6

Subtract 6 from each side

-18-6 = -3x+6-6

-24 = -3x

Divide each side by -3

-24/-3 = -3x/-3

8 =x

8 0
3 years ago
Read 2 more answers
Find sin(2x), cos(2x), and tan(2x) from the given information.<br> tan(x) = − 1/2 , cos(x) &gt; 0
vodomira [7]

Answer:

  • sin(2x) = -4/5
  • cos(2x) = 3/5
  • tan(2x) = -4/3

Step-by-step explanation:

It may be easiest to start with tan(2x).

  tan(2x) = 2tan(x)/(1 -tan(x)²)

  tan(2x) = 2(-1/2)/(1 -(-1/2)²) = -1/(3/4)

  tan(2x) = -4/3 . . . . . still a 4th-quadrant angle

__

Then cosine can be found from ...

  cos(2x) = 1/√(tan(2x)² +1) = 1/√((-4/3)²+1) = √(9/25)

  cos(2x) = 3/5

__

Sine can be found from these two:

  sin(2x) = cos(2x)tan(2x) = (3/5)(-4/3)

  sin(2x) = -4/5

5 0
3 years ago
Hey and I supposed to add or multiple when there is volume?​
MrMuchimi

Answer:

mutiply

Step-by-step explanation:

8 0
3 years ago
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A triangle has sides 12, 14, and 25. Is it a right traingle?
pickupchik [31]
No because the sides are different if they were the same they would be a right triangle
3 0
3 years ago
Read 2 more answers
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