<span>We can quickly calculate a ten percent tip by moving the decimal place one to the left. So a 10% tip on $85.00 would be $8.50. We can then take half of that tip to calculate the remaining 5%. $8.50 / 2 = $4.25. The sum of these two results is equal to a 15% tip. $8.50 + $4.25 = $12.75. The correct answer is D.</span>
Answer:
2,601
Step-by-step explanation:
You have to find the hypotenuse using the formula 
to find the length of the square which would be c. 
giving you an answer of 51. To find the area of the square you need to multiply 51 to itself so, 
.
Answer:
a) = 4/9 b) -20/21
c) -77/6 d) 39/22
Step-by-step explanation:
