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Wewaii [24]
3 years ago
9

How many km per hour must you swim if you want to cross a 5km channel in 7 hours

Mathematics
1 answer:
astra-53 [7]3 years ago
5 0
v=\dfrac{s}{t}=\dfrac{5}{7}\;[\dfrac{km}{h}]

Answer: You must swim 5/7 km per hour to cross a 5km channel in 7 hours.
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Janice drove 360 miles in 6 hours. If she travels a constant rate, calculate the distance she will cover in 7 hours?
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Answer:

420 Mile's.

Step-by-step explanation:

First you figure out the unit rate by dividing 360 by 6 which is 60. So that's 60 miles per hour. Now multiply 60 by 7 to find out how many miles she will drive in 7 hours. When you multiply you get 420.

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3 years ago
Question 11 options:
9966 [12]

Answer:

x = 12

length = 4 cm

width = 20 cm

Step-by-step explanation:

a = lw

Plug in the givens

80 = (x - 8)(x + 8)

Multiply

80 = x^2 - 64

Add 64 to both sides

144 = x^2

Take the square root of both sides

x = ±12

(The negative root is extraneous since the dimensions can not be negative)

x = 12

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What are the values of A,B and C?<br><br> Please show all the work on how you got your answer
il63 [147K]

Answer:

a=35, b=14, c=5

Step-by-step explanation:

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