Roberto and his dad drove from town a to town b taking the long way, ate lunch and then came back using a
straight short cut. what distance did roberto and his dad travel?
a)
20 km
b)
50 km
c)
70 km
o km

i need this hurry up i really need it for a test

The distance traveled by Roberto and his dad is 70 km

Explanation:

We are given:

Roberto and his dad drove from town A to town B.

= Distance traveled by Roberto and his dad during this is 50 km (as per the image)

Then, both of them came back by taking a straight short cut.

= Distance traveled by Roberto and his dad during this is 20 km (as per the image)

We know that, distance shows an additive property. This means that distance can be added.

Total distance traveled =

Hence, the distance traveled by Roberto and his dad is 70 km

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