Answer:
D. 5
Step-by-step explanation:
Heather runs 5 miles in 1 hour.
average speed = distance/time = 5 miles / 1 hour = 5 miles per hour
Answer: D. 5
One of the unknown angles (let's called it n) has a complement (meaning their sum adds up to 90 degrees) and the other angle is 8 times the unknown angle (8n)
With all this information, you should have the equation:
n + 8n = 90
To solve, combine like terms to get:
9n = 90
Divide by 9 on both sides to isolate the variable n.
n = 10
Now we plug back in to find our angle measurements. The first angle, n, is 10 degrees. The second angle, 8n, is 8 * 10 which is 80; the second angle is 80 degrees.
I believe the second image shows the image RST after the rotation.
Please take another photo of this problem sheet and share it, showing the problem statement right side up. Next, please do as much as you can on the first part of this problem. Then I'd gladly comment on your work. If you can't do that, then at least ask questions the answers to which might help you get started.
Reciprocal is basically just swapping them around, so for 10/3 it's 3/10 and that's your answer!
