Answer:
0.143
Step-by-step explanation:
7 / 7³ x 7 Start with the exponents first
7 / 343 x 7 Divide 7/343
0.02 x 7 Multiply 0.02 x 7
7^(1-3+1) = 7^-3
Here is the rule you should know: when multiplying powers of the same base you add the exponents ans when dividing powers of the same base you subtract the exponents.
Also, if there is no number at the exponent, it is 1.
Check the picture below.
the answer is 5.1%
first you divide 37 by 39 to get .94871795
next you would subtract 1 by that number and you get
.05128205 which can be rounded to .051 or 5.1%
7 1/15
3 2/5 + 3 4/6 = 7 1/15
60
60/4=15
15>7
