Miss gilman graded papers for 3.5 hours each day for 4 days last week. if she can grade 435 papers in an hour, how many papers did she grade last week?

6,090 papers

Step-by-step explanation:

If she can grade 435 papers in one hour, she can grade 1,522.5 papers in 3.5 hours, because 435 times 3.5 is 1522.5

if she grades 1522.5 papers in one day, she can grade 6,090 papers in 4 days because 1522.5 times 4 is 6,090.

hope that makes sense

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.

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.