All things Algebra
Find x when 7x=77
x=11
The formula for the circumference of a circle is:
2pir or pid
Find 12% as a decimal
0.12
If x=5, Find y when x=5y
y=1
The area of a circle with radius 2cm is?
12.57 cm2
Find 54% of 100
54
If x=4, Find y when x=2y+3
y=2
The area of a right angle triangle with sides 16 cm and 12 cm and a hypotnuse of 20 cm is?
=1/2(16 x 12)
=96cm2
If 6% of an amount of money is $30, how much is the full amount of money?
$500
If y=3, Find x when x2 = 4y+4
x=4
The area of a triangular prism of height 4cm is 12cm2. Find the volume
V=Ah
=4 x 12
=48 cm3
A jacket has been discounted by 40%. If the sale price is $180, what was the original price of the jacket?
$300
x+y=15
x=(45-y)/3
y=0
The area of the triangular roof of a house is 86m2. The length and width of the house are 12m and 16m respectively. Find the area of the house.
Arectangle=12 x 16
=192m2
Total Area = 192+86 =278m2
Some prize money is shared between 3 students. Abby receives 1/4 of the prize, Evie 1/3 and Molly the remainder. If Molly was given $20, what was the total value of the prize money?
42%=$20
Total =$47.62