Answer:
123
Step-by-step explanation:
2x² + (-5) - 10 = =
2x² - 5 - 10 = 0
2x² - 15 = 0
<u> + 15 + 15</u>
<u>2x²</u> = <u>15</u>
2 2
x² = 7.5
x ≈ 2.74
Answer:
there are many answers. The simplest one is x=1 y=3
Step-by-step explanation:
Answer:
4: No
5: A
Step-by-step explanation:
4: The mapping does now represent a function. In a function each x value can only have 1 corresponding y value ( meaning that the x values can not repeat.) In the mapping the x value 3 corresponds with 2 y values therefore the mapping is not a function.
5.
Formula for volume of a cylinder = 
Where r = radius and h = height
The cylinder shown has a given diameter of 22ft and a given height of 10ft
In order to use the formula we must convert the diameter to radius.
To do this we divide the diameter by 2 ( this is because the radius is equal to half the diameter )
so radius = 22/2 = 11
Now we plug in the dimensions into the formula

Remember, it says " Leave your answer in terms of pi," therefore we do not apply pi and leave it as 1210π
We can conclude that the answer is A
I think it is 8 right i not sure