Rational, Irrational, & Approximating Numbers
Which of the following is irrational?
a)2/7
b)7.256333333...
c)sqrt72
d)sqrt64
c)sqrt72
What is the area of a square with side length of 6 units?
36 units2
What is the volume of a cube with side length 4 units?
64 cubic units
What is the Pythagorean Theorem?
a2+b2=c2
Solve the absolute value equation.
2|x|=16
x=8, -8
Write the following decimal as a fraction:
0.45454545454545.....
45/99 or 5/11
What is the side length of a square with area 81 square units?
9 units
What is the side length of a cube with a volume of 343 cubic units?
7 units
If a right triangle has side lengths of 9, 15, and 12, which side would be the hypotenuse?
15
Solve the absolute value equation.
|x|+4=2
DNE
Which of the following is the best approximation for sqrt46?
a)6
b) 6.5
c) 7
d) 7.5
c) 7
What is the EXACT side length of a square with area of 50 square units?
sqrt50 units
What is the EXACT side length of a cube with a volume of 124 cubit units?
cube root 124 units
If a right triangle has a hypotenuse of 7 units and a leg of 3 units, what is the exact length of the other leg?
sqrt40 units
Solve the inequality.
-2x+7<21
x>-7
sqrt78 is between which two integers?
8 & 9
What is the solution to the following equation?
x2=25
x=5,-5
What is the solution to the following equation?
x3=216
x=6
If a right triangle has a leg with length 4 units and a leg with length sqrt20 units, what is the exact length of the hypotenuse?
6 units
Simplify sqrt80 completely.