Divide the current beats per minute by the percentage to get the original beats per minute.
= 10 beats ÷ 20%
= 10 ÷ 0.20
= 50 beats per minute
Check:
= 50 beats * 20%
= 50 * 0.20
= 10
Hope this helps! :)
8 of the students are neither japenese or chinese
Answer:
Step-by-step explanation:
Charlotte's revenue earned : R = 12.50h.....where R = revenue earned and h represents hrs worked
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break even point :
12.50h = 45 + 2.50h
12.50h - 2.50h = 45
10h = 45
h = 45/10
h = 4.5 <== she would have to work 4.5 hrs to break even
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revenue - expenses = profit / loss
for 5 hrs...h = 5 for 3.5 hrs
12.50(5) - (45 + 2.5(5)) = 12.50(3.5) - (45 + 2.5(3.5)) =
62.5 - (45 + 12.5) = 43.75 - (45 + 8.75) =
62.5 - 57.5 = $ 5 profit 43.75 - 53.75 = -10....$ 10 loss
for 4 hrs for 7 hrs
12.50(4) - (45 + 2.50(4)) = 12.50(7) - (45 + 2.50(7)) =
50 - (45 + 10) = 87.5 - (45 + 17.5) =
50 - 55 = - 5.....$ 5 loss 87.5 - 62.5 = $ 25 profit
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12.50h - (45 + 2.50h) = 50
12.50h - 45 - 2.50h = 50
10h - 45 = 50
10h = 50 + 45
10h = 95
h = 95/10
h = 9.5 <=== she would have to work 9.5 hrs to make a $ 50 profit
Exponents are hard but think about it like addition, that number tells you how many times to add that number to itself. To write the equation put the number and then the exponent on the top right of that number. Your welcome!
Answer:
This problem has no answer.
Step-by-step explanation:
24+6k<-6(-4-k)
24+6k<24+6k
24-24<6k-6k
0<0k
This problem has no answer.