Algebra Answers

Amy is x years old
In 13 years time she will be 3 times as old as she was 5 years ago.
How old is she now?

how many minutes are in 78 hours

a man walks a certain distance.had he walked half a km an hour faster than he did he would have taken half an hour less, but had he walked half a km an hour slower he would have taken 40 minutes more.find the distance and his rate of walking.

45 is 90% of

A student has 2 tests, test A and test B. Test A counts for 30% of the final score, and test B counts as 70% of the final score. Test A 36/40 questions answered correctly. Test B 64/80 questions answered correctly. What is the final score?

What is the domain of the function d(t)?

If the following costs are incurred on sales of £18,500
Staff Wages - £3367
Management Salary - £2250
What are the following percentages? (To 1 decimal place)

-3a-4b+2c=28 a+3b-4c=-31 2a+3c=11

which of the following is greater than 16/19
a.15/18
b.17/20
c.14/17
d.13/16