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hodyreva [135]
3 years ago
6

The current of a river is 2 miles per hour. A boat travels to a point 3 miles upstream and back in 2 hours. What is the speed of

the boat in still water? The speed of the boat in still water is.​
Mathematics
1 answer:
romanna [79]3 years ago
8 0

Answer:

1.5 miles per hour

Step-by-step explanation:

3 miles divided by 2 hours

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Answer:

A

Step-by-step explanation:

Given

a = \frac{1}{x} - \frac{1}{y} = \frac{y-x}{xy} ← as a single fraction

Thus

\frac{1}{a} = \frac{1}{\frac{y-x}{xy} } = \frac{xy}{y-x} → A

6 0
3 years ago
Find the length of GF
Cerrena [4.2K]
By the Pythagorean Theorem:

The square of the hypotenuse (longest side) of a right triangle is equal to the sum of the side lengths squared, or mathematically:

h^2=x^2+y^2, where x and y are the side lengths and h is the length of the hypotenuse, in this case:

9.4^2=6.8^2+GF^2

GF^2=9.4^2-6.8^2

GF^2=42.12

GF=√42.12 units

GF≈6.49 units (to nearest hundredth of a unit)
3 0
3 years ago
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James is taking a test to be on a game show to win money. He has to answer 75 questions or more correctly in 3 rounds in order t
Tresset [83]

Answer:

Yes; James got 76 answers correct

Step-by-step explanation:

Round 1: 50 x 0.8 = 40

Round 2: 40 x 0.75 = 30

Round 3: 30 x 0.2 = 6

40 + 30 + 6 = 76

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3 years ago
A machinist can produce 114 parts in 6 minutes. At this rate, how many parts can be produced in 15 minutes?
KonstantinChe [14]

285

just figure out how many is made then multiple that by 15

4 0
3 years ago
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In ΔHIJ, i = 550 inches, j = 150 inches and ∠H=92°. Find the length of h, to the nearest inch.
Novay_Z [31]

Answer:575

Step-by-step explanation: deltamath

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