Pre-Algebra
Solve
-20.93/-2.3
9.1
AUDIENCE QUESTION
Find the value of the expression a2 + 2ab +b2 if a=6 and b=4.
100
solve
5y - 4 =9y + 8
-3
Find the next three terms of the arithmetic sequence
0, -15, -30, -45, -60 ...
-75, -90, -105
What is pi to two decimals?
3.14
50% of what number is 31?
62
Find the value of x in f(x)=5-2x if f(-6y)
5 + 12y
Solve:
l 3t-2u l + 5v
if t=2, u=-5 and v= -3
1
Find the slope
(6,3) , (6,4)
undefined
If college tuition for undergraduates is $15,450 a year, how much will four years of college be?
61800
AUDIENCE QUESTION
Solve
A parallelogram has a base of 20 millimeters and height of 6 millimeters. Find the area.
120 mm2
What is 2x2 - 14 equal to when x=-3?
4
AUDIENCE QUESTION
Solve 5x - 3y = 9 for y.
y= 5/3x - 3
Write the nth term equation for
a1=6, d=5
an=-3n+31
How would you write 7/5 as a mixed numeral?
1 2/5
Solve
Marta got 60% off a pair of shoes. If the shoe cost $15.90 (before sales tax), what was the original price of the shoes?
$39.75
A rectangle has a length of 5+3x and a width of 13. What is the area of the rectangle?
65+39x
Evaluate:
(3x2+5x-12) - 2(x2+4x+9)
x2-3x-30
AUDIENCE QUESTION
Solve the following
0=16-8x
2
AUDIENCE QUESTION
Find the percent of decrease:
original price: $25
sale price: $15
40% decrease
Solve
A cylinder has a height of 8 inches and a base radius of 3 inches. What is the volume of the cylinder? Round to the nearest tenth.
226.08in3
What is a simplified form of the expression
(15k + 2) - (k2 - 2)?
-k2 + 15k
Lara's car needed a particular part that costs $75.The mechanic charges $50 per hour to install the part. If the total cost was $350, how many hours did it take to install the part?
5.5hours
Write an equation for the nth tern of the arithmetic sequence
-2, 1, 4, 7, 10, 13...
an=3n-5
There is a three digit number. The second digit is four times as big as the third digit, while the first digit is three less than the second digit. What is the number?
141