Answer:
(-1, 2)
Step-by-step explanation:
If we have a point (h,k) and it is rotated 90 degrees clockwise, the resulting point will have coordinates (k, -h).
So, basically the y coordinate becomes the x coordinate and x coordinate becomes the NEGATIVE of the y coordinate.
The point to rotate is (-2, -1), so after 90 degree clockwise rotation, it will become:
(-1, -(-2))
= (-1, 2)
This is the answer.
The easiest way to find the inverse of a function is to swap the x and y, meaning:
We have the function
. Let's call our outputs "y", so we have
. To find the inverse, we're going to change the x and the y's position in the equation, so we have
. Then all we need to do is solve for y:
Not quite sure what this is
Answer:
41. 165.8 cm², 42. 101 m², 43. 75π ft², 44. 147π cm²
Step-by-step explanation:
41. 18x12=216, 3.14(4)²=50.24
216 - 50.24 = 165.76
42. 14x9=126, 5x5=25
126 - 25 = 101
43. πr² = (π)10²- (π)5² = 75π
44. πr² = (π)14²- (π)7² = 147π
Answer:
$0.60
Step-by-step explanation:
2 • 4 = 6
6 • 0.10 = 0.60
