1. Mary drives at speed of 25 miles in 5 hours , How many miles she drives in 1 hours? * (1 Point)
A. 4 miles
B. 5 miles

B. 5 miles

Step-by-step explanation:

Let the miles in 1 hour be x

According to the question,

25 miles  = 5 hours

x miles = 1 hour

x miles = 25 miles / 5 hours

x = 5 miles

Hope it helps!

easy math just plug in a and b

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.