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Travka [436]
3 years ago
8

A car travels 160km in 2 hours. What is the average speed of the car?

Mathematics
2 answers:
Artist 52 [7]3 years ago
6 0

Answer:

The answer to your question is speed = 80 km/h

Step-by-step explanation:

Data

distance = 160 km

time = 2 h

speed = ?

Speed is the distance travel per unit of time. That means how fast is traveling a car.

Formula

   speed = distance / time

Substitution

   speed = 160 / 2

Simplification

   speed = 80 km/h

The units of speed are km/h or m/s

ludmilkaskok [199]3 years ago
4 0

Answer:

80 KM PER HOUR  OR ABOUT 1.3 KM PER MINUTE!

Step-by-step explanation:

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Let x be the amount of money, you fund in Fund A and y be the amount of mone yyou fund in Fund B.

1. You have 250,000 In an IRA at the time you retire and want to invest this money into Funds A and B, then

x+y=250,000.

2. Fund A pays 1.2% (as a decimal 1.2% is 0.012) annually, then x\cdot 0.012=0.012x is annual interest income in Fund A.

Fund B pays 6.2% (as a decimal 6.2% is 0.062) annually, then y\cdot 0.062=0.062y is annual interest income in Fund B.

Since Fund A and Fund B produce an annual interest income of $8,000, then

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3. Solve the system of equations:

\left\{\begin{array}{l}x+y=250,000\\0.012x+0.062y=8,000.\end{array}\right.

Express x from first equation x=250,000-y and substitute it into the second equation

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Then

x=250,000-100,000=150,000.

Answer: you have to fund $150,000 in Fund A and $100,000 in Fund B.


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2 years ago
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Answer:

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2 years ago
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