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Marianna [84]
3 years ago
6

What is the value of this expression when a =-9?

Mathematics
1 answer:
brilliants [131]3 years ago
5 0

Answer: 10

Step-by-step explanation:

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anyanavicka [17]
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Inside a toy truck, there is a gear that rotates to (3, −8) when the steering wheel is turned to the left. What is the sine valu
Marianna [84]
This is the the concept of trigonometry, to get the sine value of the the function given we shall proceed as follows;
Using Pythagorean theorem, the hypotenuse of the triangle will be found as follows;
The side length will be 8 units since the y-coordinate is -8
The side width will be 3 units since the x- coordinate is 3  
c^2=a^2+b^2
c^2=(3)^2+(-8)^2
c^2=9+64
c^2=73
c=sqrt(73)

Therefore the sine value will be:
sin x=3/sqrt(73)
multiply both numerator and denominator by sqrt(73) we get:
sin x=(3√73)/73

Therefore the answer is A]
4 0
3 years ago
How do I do number 4?
Galina-37 [17]
What are you trying to find?
4 0
3 years ago
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A student says that (-1, 2) is a solution of y=3x-2 Are they correct or incorrect? Why?
Nina [5.8K]

Answer:

If you substitute (-1,2) meaning x and y

2=3(-1)-2

2=-3-2

2= -1

Step-by-step explanation:

he's incorrect since the solution does not equal 2 on both sides

3 0
3 years ago
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