Lin and Jada each walk at a steady rate from school to the library. Lin can walk 13 miles in 5 hours, and Jada can walk 25 miles in 10 hours. They each leave school at 3:00 and walk 3 and 1/4 miles to the library. What time do they each arrive?

Step-by-step explanation:

Given parameters:

Rate of walking by Lin = 13 miles in 5 hours

Rate of walking by Jada  = 25 miles in 10 hours

Distance walked = 3.25 miles

Time of take off = 3:00

Solution:

The rate of their walking amounts to their speed;

             Speed  =

Speed of Lin  =   = 2.6 miles/hr

Speed of Jada =  = 2.5 miles/hr

To find the time; make it the subject of formula and solve for each person;

                       Time  =

 Time of Lin  =  = 1.25hr    = 48 minutes

  Time of Jada  =   =  1.3hr   = 47 minutes

Time for each to arrive;

              Lin  = 3.00 +  1.25hr  = 4:25

              Jada  = 3.00 +  1.30hr    = 4:30

answer: download photomath it's legit.

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.