During Rachel’s birthday party, Rachel thinks about the ages of her parents and herself. Rachel says, “Hey, Mom and Dad, together your ages add up to 100 years!” Her dad is surprised. “You are right,” he says, and your age and mine total 64 years.” Rachel replies, “And my age and Mom’s total 58.” how old is rachel?

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.

17

step-by-step explanation:

51/3=17

thus 17 is your answer.

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get  

its line 2 i just added the rest or else it wouldn't let me answer