3 years ago

Jennifer jogged at a rate of 3/5 mile every 6 minutes. what was her jogging rate in miles per hour

Mathematics

1 answer:

alexgriva [62]3 years ago

7 0

Answer:

she jogged for 35 hours

Step-by-step explanation:

6×5 6+5=11 11+6=17 17+6=23 23+6=29 29+6=35

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Solve this system of linear equations. Separate the x- and y-values with a comma.

vodomira [7]

Answer:

x = $\frac{5}{2}$ , y = $\frac{5}{4}$

Step-by-step explanation:

1. Isolate for x in one of the equations:

2x = 9x - 14y

2x-9x = 9x-9x -14y

-7x = -14y

-7x/-7 = -14y/-7

x = 2y

2. Substitute 2y in for x in the second equation:

9(2y) = 40 - 14y

3. Simplify:

18y = 40 - 14y

4. Isolate for y:

18y+14y = 40 -14y+14y

32y = 40

32y/32 = 40/32

y = $\frac{5}{4}$

5. Substitute the new y-value into the simplified expression x = 2y:

x = 2(5/4)

x = $\frac{5}{2}$

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2 years ago

Sin(x+20) - cos (2X+10)

Vladimir [108]

Answer:

X=20

Step-by-step explanation:

Sin(x+20)=cos(2x+10)

Sin(x+20)=sin(90-(2x+10)

X+20=90-2x-10

3x=60

X=20

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3 years ago

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Nadya [2.5K]

Answer:

x= 27

Step-by-step explanation:

81=3x

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a customer buys $12.42 in merchandise and gives the cashier a ten dollar bill, a five dollar bill, a dime, a nickel and two penn

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Her correct change would be $2.75 cents, to get this answer, just subtract 12.42 from 15.17
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Answer:

Step-by-step explanation:

1200

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