Answer:
(6,6)
Step-by-step explanation:
1 mile = 5,280 feet:
9 miles x 5280 feet per mile = 47,520 total feet per hour
1 hour = 3600 seconds.
Divide total feet by seconds per hour:
47,520 feet / 3600 seconds per hour = 13.2 feet per second.
Multiply feet per second by number of seconds for distance traveled:
13.2 feet per second x 15 seconds = 198 total feet.
Answer: 28.79 yards of wallpaper
Step-by-step explanation: Brainpower/Calculator :)
Answer:
f(-4) = -120
Step-by-step explanation:
So we know that f(x) = 11x - 5x² + 4, and we are trying to solve for f(-4). To solve for f(-4), we plug -4 for x in the equation of f(x). In other words, change all x's into -4 in the equation 11x - 5x² + 4 and then solve.
f(x) = 11x - 5x² + 4
Plug in -4 for x.
f(-4) = 11(-4) - 5(-4)² +4
Simplify. 11(-4) = -44, 5(-4)² = 5(16) = 80.
f(-4) = -44 - 80 + 4
Solve.
f(-4) = -120
The answer is f(-4) = -120.
I hope this helps. If you need any clarifications, feel free to ask. Happy studying. :)
She had 12 cookies and her brother ate 9 of them ,how many did he leave out of her 12?