Answer:
Total percent of the room did she paint green = 60%
Step-by-step explanation:
Given - Cheryl painted her living room walls with two different colors. She painted part of the room yellow and another part green. If the surface area of the walls in her room is 720 ft² and she painted 288 ft² yellow.
To find - What percent of the room did she paint green ?
Proof -
Given that,
The surface area of the walls in her room = 720 ft²
Total area painted in yellow color = 288 ft²
So,
Total area painted in green color would be = 720 - 288 = 432 ft²
Now,
Let the total percent green color painted = x
So,
720 × x% = 432
⇒![720*\frac{x}{100} = 432](https://tex.z-dn.net/?f=720%2A%5Cfrac%7Bx%7D%7B100%7D%20%20%3D%20432)
⇒ x =
= 60
∴ we get
Total percent of the room did she paint green = 60%
Answer:
$1820
Step-by-step explanation:
35 x 52 = $1820
So if we do not know what 12 times 9 is then we can round 9 to 10 and get
12 times 10
most people can multiply by ten so this should be easy so
12 times 10=120
12 times 9=108
she was off by 12 so a 10% deviation error
another way to do it is you multiply 12 by 10 and get 10 12's
then you subtract 1 12 and get 9 12's
You can really just use a calculator...........
16.
The average rate of change of the given function is -6.