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snow_lady [41]
3 years ago
14

Mr. Smith drove for 45 minutes at a speed of 40 km/h. He stopped for 15 minutes for a coffee break and then he drove for 2 hours

at a speed of 75 km/h. What was his average speed for the entire journey?
Mathematics
1 answer:
Kay [80]3 years ago
8 0

Answer:

60 km/h

Step-by-step explanation:

Average speed is total distance over total time.

Total distance: 30 + 0 + 150 = 180 km.

Total time: 0.75 + 0.25 + 2 = 3 hrs.

180/3 = 60/1

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Find the LCM of 98 and 182.
LUCKY_DIMON [66]

Answer:

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Step-by-step explanation:

98 = 2 × 7²

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5 0
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In a race, Jane ran 3 minutes less than twice as many minutes as Mike ran. Write an expression to represent the number of minute
a_sh-v [17]

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n * 2 - 3

Step-by-step explanation:

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4 0
3 years ago
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bonufazy [111]

Answer:

$14,277.80

Step-by-step explanation:

The standard formula for compound interest is given as;

A = P(1+r/n)^(nt) .....1

Where;

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t = time of investment in years

For this case;

P = $7,400

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r = 9.5% = 0.095

Using equation 1.

A = $7,400(1+0.095/4)^(4×7)

A = $7,400(1.02375)^(28)

A = $7,400(1.929432606035)

A = $14,277.80

final amount/value after 8 years A =$14,277.80

6 0
3 years ago
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Step-by-step explanation:

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3 years ago
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