Fill in the blank:

The value of 8 dimes is % the value of a dollar. (Remember, 60 cents = 60% the value of a dollar)

List a combination of coins that is 130% the value of a dollar.

Blank 1:
Blank 2:

80%

Step-by-step explanation:

This is because if 60 cents is 60% of a dollar then 80 is 80% of a dollar. I got 80 because a dime is worth ten cents and 8 times 10 equals 80. so that would be 80%

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

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.