Algebra
Simplify:
3a+4a-a=
6a
Solve:
x-21=36
x=57
Calculate the royalty when $250 000 sales is made and the rate is 5.5%.
$13 750
What is the time difference from 9:45 am to 12:30 pm?
2 hours and 45 minutes
Change subject to y:
2x+y=10
y=10-2x
Fully simplify:
4a-10b+3b+2a=
6a-7b
Solve
x-5=-3
x=2
An annual salary is $120,120.
What is the weekly gross pay?
$2310
Sydney has UTC (+10) and Perth's UTC is (+8). When it is 10pm in Perth, what is time in Sydney?
12:00 am
Change subject to y:
4x+2y=8
y=4-2x
Expand and fully simplify:
5a(2a+3)=
10a^2+15a
Solve
3x-15=21
x=12
A person works 40 hours a week and earns $2160.
What is their hourly pay rate?
$54
Darwin is UTC (+9.5) and Los Angeles is UTC (-7).
What is the time difference between Darwin and Los Angeles?
16.5 hours
Change subject to y:
2x-y=x+4
y=x-4
Expand and fully simplify:
3(a+4)-2(5-a)=
5a+2
Solve
3(2x+4)-4x-10=8
x=3
A salesperson earns commission of 7% of total sales. They earned $3780 last fornight.
What was their sales amount
Sydney has UTC (+10) and Paris is (+2). A plane leaves Paris at 5 am on Friday and and flies to Sydney. The flight time is 21 hours.
What day and time does the plane land in Sydney (local time)?
10:am Saturday
Change subject to y:
x^2+y^2=25
y=sqrt(25-x^2)
Expand and fully simplify:
(x+5)\times(x+4)=
x^2+9x+20
Solve
4(x-5)=3(x-3)
x=11
Mark took 4 weeks holiday. His leave loading (@ 17.5%) was $1995
What is his usual weekly pay?
$2850
2.5 degrees
Make r the subject:
V=4/3pir^3
Tell me as I can't get it to show ;o)
r=root(3)((3V)/(4pi))