Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original height every hour.
Please complete the following sentence by writing the number in the blank. Until the candle has been burning for at least _______ hours, the height of Jennifer's candle will be more than 7 inches.

Candle looses 10% of 8 inches, it equals:

8*0.1 = 0.8 inches an hour

Let x be required time, then:

8 - 0.8x > 7
0.8x < 8 - 7
0.8x < 1
x < 1/0.8
x < 1.25
or 1 hour 15 minutes

7 0

3 years ago

Miss Guydan and her friend Alyssa are collecting food for the local food bank. Their goal is to collect 2100 pounds of food. The

Sergeeva-Olga [200]

Answer:

400+25x=2100

Step-by-step explanation:

400 is independent variable 25x is a dependent variable 2100 is independent variable

3 0

3 years ago

pablo buys 3 servings of jambalaya and 2 drinks for $18 jasmine buys 1 serving and 2 drinks for $9. Write 2 equations based on t

Masja [62]

Pablo buys 3 servings of jambalaya and 2 drinks for $18.00.
Jasmine buys 1 serving of jambalaya a2 drinks for $9.00
Answer by Alan3354(67427) About Me (Show Source):
You can put this solution on YOUR website!
Pablo buys 3 servings of jambalaya and 2 drinks for $18.00.
Jasmine buys 1 serving of jambalaya a2 drinks for $9.00
------------
Thx for letting us know.
Then what happened?

6 0

3 years ago