New Random Stuff

Question 1

Time for workers to complete job alone shortcut

Answer 1

Total time together = (total time worker 1 alone*total time worker 2 alone)
/(total time worker 1 alone + total time worker 2 alone)

Question 2

Percent less than translation

Answer 2

1 - x/100 or (100-x)/100

Question 3

Cost =

Answer 3

P*Q

Question 4

Shortcut for catch up and pass?

Answer 4

Find time it will take to go the required distance at the “net” rate of faster car minus slower car

Question 5

For rates problems of cars going toward each other what’s the shortcut

Answer 5

Add the rates together and see how long it takes that combined rate to go that distance - that’s the time they’ll meet

Question 6

a.bc = ?

Answer 6

a.bc = a + b(1/10) + c(1/100)

Question 7

xzy can be re expressed as?

Answer 7

100x + 10z + y

Question 8

When two items are sold at the same selling price, one at a profit of x% and the other at a loss of x%, there is an overall loss%=(x^2)/100
How do you finish out this problem?

Answer 8

Question 9

What is absolute value equation for this line segment?

Answer 9

1: length of line is 8
2: middle point is at 4 away from each endpoint so equidistant point is at -1
3: |x-(equidistant point)|<= middle point
4: |x-(-1)|<= 4
5: |x+1|<=4

Question 10

What does it mean if the residual above the median equals the residual below the median?

Answer 10

The mean = the median

Question 11

Formulas for first n positive #’s, first n positive evens, and first n positive odds

Answer 11