Round/Fractions/Expressions
Round 47.38 to the nearest tenths.
47.4
5x-3 = 2x + 9
x=4
(5x2 + 3x - 1) - (2x2 - x + 4)
3x2 + 4x - 5
Simplify square root 50
5 square root 2
Convert 12 miles to kilometers
(1 mile = 1.61 km)
19.32 km
2/5 * 15/4
3/2
4(x-2)=2x+6
x=7
Factor x^2 - 9
(x+3)(x-3)
Simplify square root 18x^2
3x square root 2
|-6| - 5 + 3
4
3/4 + 5/6
19/12 or 1 7/12
Solve and write in interval notation.
-6x>12
x<-2
(-inf, -2)
Factor x^2 + 4x - 12
(x+6)(x-2)
Change to a radical (2x)^(2/3)
cube root 4x^2
(from cube root (2x)^2)
Find the slope of the two points (-3, 4) and (-6, 5)
-1/3
9/10 / 3/5
3/2 or 1 1/2
-2(3x - 5) <= 10
x>=0
[0, inf)
(2x + 3)^2
4x2 + 12x + 9
Find the missing side of the right triangle on the board.
3 square root 13
(from square root 117 = square root 9*13)
Graph 6x + 2y = 18
Possible points on the line: (0,9), (3,0), (1,6), (2,3)
Evaluate 2x^2 - 3x + 4 for x = -3
31
Isolate y in 3x + 2y = 12
y = (-3/2)x + 6
12x^2 + 2x - 4
2(2x-1)(3x+2)
Simplify square root 72y^3
6y square root 2y
There is a 4 piece weight set in Sarah’s math class where 2 of the pieces weigh 120 cg each and one piece each weighing 2 g, and 90 mg. What is the heaviest object that can be weighed using all parts of the set (in grams)?
(kg hg dag g dg cg mg)
4.49 g