we know that, denominator ≠ 0
16y² ≠ 0
y ≠ 0 is excluded value.
25% of $80=$20
$80-$20=$60 remaining after you purchased shorts
65% of %60=$39
Answer: Sandals cost $39.00
To convert our number to scientific notation, we are going to move the decimal point to the right until we have only one non-zero digit to the left of the decimal point, and then, we are going to multiply that number by a negative power of 10 equal to the number of times we moved the decimal point to the right:
<span>
Our number is 0.000000016, so we need to move the decimal point 8 times to the right to have </span>only one non-zero digit to the left of the decimal point (1.6). Since we moved the decimal point eight times to the right, we are going to multiply 1.6 by y a negative power of 10 equal to the number of times we moved the decimal point to the right i.e.

.
So 0.000000016 expressed in scientific notation is 1.6x

, or in calculator notation 1.6E-8
We can conclude that the correct answers are <span>
1.6E-8 and </span><span>
1.6 × 10-8</span>
87.5% of 32 questions = 28 questions.
32 - 28 = 4
so there are 4 questions to be done after dinner.