HELPPP PLEASE PLEASE Please just help on number 15 16 17

Mathematics

1 answer:

Brums [2.3K]3 years ago

4 0

Answer:

use formaul

Step-by-step explanation:

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jekas [21]

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First place the protractor at 0 and starting point of angle .
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3 years ago

If a plane can travel 450450 miles per hour with the wind and 410410 miles per hour against the wind, find the speed of the win

Artemon [7]

The plane speed in still air is the average of the two speeds: 430 miles/hour.
The wind speed is half the difference of the two speeds: 20 miles/hour.

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3 years ago

The runner has to race for 21km. She has to finish race before 1h 40min. What avarage speed She has to run to gain such goal?

abruzzese [7]

Answer:

The rate of the runner is 3.5 meters per second.

Step-by-step explanation:

To get this answer in meters per second, we first have to convert each of the terms into either meters or seconds. We can do that by multiplying by unit rates.

21 km * 1000 = 21,000 meters

1 hour * 3600 = 3,600 seconds

40 minutes * 60 = 2,400 seconds

Now we divide the meters by the total number of seconds to get the rate.

21,000 meters / (3,600 + 2,400) secs

21,000 meters / 6,000 secs

3.5 meters per second.

7 0

3 years ago

The expression P(4, 3) is equal to:<br> -3!<br> -4!<br> - 1

nexus9112 [7]

Answer: