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3 years ago

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To drive to work, Dave has to drive 20 miles east and then 15 miles north. If there were a direct road going northeast, how many

miles would he have to drive?

1 answer:

suter [353]3 years ago

7 0

By the Pythagorean theorem:

$x= \sqrt{20^2+15^2}= \sqrt{400+225}= \sqrt{625}=25 \ miles$

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postnew [5]

Answer:

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2 years ago

Write each fraction as a unit fraction<br> 12/84<br> 13/143<br> 23/138

alexandr1967 [171]

A unit fraction is a fraction whose numerator is 1.

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3 years ago

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2 years ago

Danielle invests $2,007 in a retirement

ivanzaharov [21]

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3 years ago

Read 2 more answers

Two trains are 500 miles apart when they first enter a collision course. If, after two hours, the distance between them is 300 m

MrRissso [65]

Answer:

The faster train goes 60mph

Step-by-step explanation:

s= speed

s+20 is the faster train.

Then you are given:

200/s+s+20=2

200=2*(2s+20)

4s+40=200

4s=160

s=40 is the slower train

40+20= speed of faster one

s=60 ;)

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3 years ago