Help! Will give will give brainist 1. An airplane flies 1431 miles in 2 hours 15 minutes. What is its average speed in miles per hour?

2. A train travels 76 miles in 1 7/12 hours. What is its average speed in miles per hour?

3. An airplane flies 1914 miles in 2 3/4 hours. What is its average speed in miles per hour?

4. A train travels 102 miles in 2 5/6 hours. What is its average speed in miles per hour?

5. Tracy runs 26.2 miles in 3 hours and 45 minutes. What is her average pace in minutes and seconds?

1. 636miles/hour

2. 53.65milesper hour

3.696miles per hour

4.37.09mikes per hour

5. 6.99miles/hour

Explanation:

you first convert all the time into improper fractions

then work out speed which is got by dividing distance with time

the movie was based there, and all the animals and characters are native.

~courtney

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml