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Temka [501]
3 years ago
13

Can someone plz help me with these

Mathematics
1 answer:
svet-max [94.6K]3 years ago
3 0

Answer:

11: -20

12: -4/9

13: 15

14:  1/2

15: 9 yards

16: 1/10 m^3 or 0.1 m^3

17: 51 degrees

Step-by-step explanation:

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There are two different clocks in Wendy's house, one is 20 minutes faster in a day, and the other is 30 minutes slower in a day.
Annette [7]

Answer:

The answer is below

Step-by-step explanation:

For the first clock that is 20 minutes faster in a day, that means it is \frac{20\ min}{60\ min/hr}=\frac{1}{3}hr faster every day. For it to show the correct time, the clock should be 24 hours faster.

Since 1 day = 1/3 hr faster

x days = 24 hr faster

Let x number of days be required to be 24 hr faster. To find x we use the formula:

x=\frac{24 \ hr* 1\ day}{\frac{1}{3}hr }  \\x=72\ days

For the second clock that is 30 minutes slower in a day, that means it is \frac{30\ min}{60\ min/hr}=\frac{1}{2}hr faster every day. For it to show the correct time, the clock should be 24 hours slower.

Since 1 day = 1/2 hr slower

y days = 24 hr faster

Let x number of days be required to be 24 hr slower. To find x we use the formula:

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Which of the following is the solution of –6x – 17 = 19?
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-6x=19+17
-6x=36 /(-6)
x=-6
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