Answer:
D
Step-by-step explanation:
Not much to do here but just convert it all to decimals
Answer D
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Answer:x=2
Step-by-step explanation:2x + 8x - 1 = 19
10x=20
x=2
Answer:
5% each hour
Step-by-step explanation:
in 1.5 hours she loses 7.5% of battery
get the percentage of loss for a half hour.
divide 1.5 and 7.5 by 3.
That gives a loss of 2.5% for every half hour.
Which gives a loss of 5% percent an hour.
Dividing fractions is easy
You have 3/10 and you multiply 1/2 by its reciprical so it's 3/10 times 2