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Monica [59]
3 years ago
9

A cyclist rode at a speed of 21 mph

Mathematics
1 answer:
mario62 [17]3 years ago
4 0

Answer:131

Step-by-step explanation:

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A motor boat travels 60 miles down a river in three hours but takes five hours to return upstream. Find the rate of the boat in
Kryger [21]

Answer:

  • boat: 16 mph
  • current: 4 mph

Step-by-step explanation:

  speed = distance / time

The rate downriver is (60 mi)/(3 h) = 20 mi/h.

The rate upriver is (60 mi)/(5 h) = 12 mi/h.

The rate of the boat in still water is the average of these:

  (20 +12)/2 mi/h = 16 mi/h

The rate of the current is the difference between the boat speed and actual speed:

  16 mi/h - 12 mi/h = 4 mi/h

3 0
3 years ago
Jane has $5 more than three times as much money as Lonnie has.Bob has $1 less than four times as much money as Lonnie has. All t
kkurt [141]
Starting equation:
92=J+L+B

To find how much money Jane has, we use the equation:
J=5+3L
To find how much money Bob has, we use the equation:
B=4L-1

Enter those equations in the problem

92=(5+3L)+L+(4L-1)
Combine like terms
92=4+8L
Subtract 4 to isolate variable
88=8L
Divide by 8 to isolate variable
11=L

Answer:
Lonnie has $11
Jane has $38
Bob has $43

side note: Lonnie is that one poor friend we all have
5 0
3 years ago
pamela claims that if you multiply a fraction that is negative by another fraction that is negative, the product will also be ne
svetoff [14.1K]
Pamela is incorrect. When you multiply anything negative by a negative, the product will always be a positive. Because the two negative signs cancel each other out.
5 0
3 years ago
A dance academy charges $24 per class and a one-time registration fee of $15. a student paid a total of $687 to the academy. fin
Georgia [21]
28 is the correct answer

8 0
3 years ago
WILL MARK BRAINLIEST!!!!!!!!!!!!
aalyn [17]

Answer:

x+y=1+3

Step-by-step explanation:

6 0
3 years ago
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