-7x + y = -22
-7*4 + y = -22
y = -22 + 28
y = 6
Answer: 1 1/2 hours or 90 minutes
Step-by-step explanation: Painting 1/2 of her bedroom took 3/4 an hour or 45 minutes. At the same rate, it would take her another 3/4 of an hour or 45 more minutes. Add it together to get 90 minutes or 1.5 hours to paint the full room.
Answer:
No it's false 2.1 > 2.09
Step-by-step explanation:
A. 6 + 7x = y
B. -6 + 7x = y
C. -6 - 7x = y
D. 6 - 7x = y
Answer:
b
Step-by-step explanation:
she drinks 9/2 ounces of water in 1 hour
Step-by-step explanation:
On average, the person drinks 1/2 of a 6-ounce glass of water in 2/3 hour.
First of all, we have to rewrite the amount of water in a single fraction: we have
This means that the person drinks 3 ounces of water every 2/3 hours.
In order to find how much water she drinks in one hour, we use the following proportion:
where
x is the amount of water she drinks in one hour.
Solving the equation for x,
Therefore, she drinks 9/2 ounces of water in 1 hour.
Learn more about fractions:
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