X objects in t seconds.....how long to sort 15 objects....so x = 15
t = 0.007(15^2) + 0.003(15)
t = 0.007(225) + 0.045
t = 1.575 + 0.045
t = 1.62 seconds <===
Answer:
Below
Step-by-step explanation:
First she needs to estimate or guess what length they may be, like say the eraser is 2 1/2 inches, she then can use a ruler on the paper to get the actual length.
Keep Change Flip!!!
Keep: the first fraction 5 or 5/1
Change: Division sign to multiplication sign
Flip (reciprocal): the second fraction
So you get 5/1*9/2= 45/2 which simplified to 22 1/2
I think the answer is c) I could be wrong tho. No promises
4/6=2/3
2/3+x/3+3/2
apply rule a/c+-b/c=(a+-b)/c
(2+x)/3+3/2 is your final answer
remove the parenthesis if you want i was just trying to show 2+x over 3
