Number System
Which of the following is an integer?
a. -3
b. 1/4
c. -12.5
d. 0.45454545.....
a. -3
Integers are the set of whole numbers and their opposites.
What is the answer to any number that has been raised to the power of zero?
One
Solve:
2(2x - 7) = 14
x = 7
Find the solution to the following system:
y = x - 5
y = 2x + 1
(-6, -11)
Find the hypotenuse of a triangle having legs that are 7 cm and 11 cm. Round to the nearest 10th.
13
Which one of the following is an irrational number?
a. 5/7
b. 0.1
c. pi
c. pi
What is the cubed root of 8?
Two
Solve:
3y - 7(y + 5) = y - 35
y = 0
In words, describe what the solution of a system of equations is.
The solution is the ordered pair (x,y) where they intersect.
Would these 3 side lengths form a right triangle?
3in., 4in., 5in.
yes
Between what two numbers would the square root of 90 lie?
a. 5 and 6
b. 6 and 7
c. 9 and 10
C. 9 and 10
Find the unit rate if 12 tablets cost $1,440.
a. $100
b. $150
c. $120
c. $120
Solve"
6x - (2x + 5) = 11
x = 4
Are the following graphs parallel of perpendicular to each other?
y = 2x - 9
y = -1/2x + 3
Perpendicular
A square has sides that are 5 inches long. What is the approximate length of the diagonal?
7 inches
Which of the following numbers has the greatest value?
a. 8.93 x 10^3
b. 8.935 x 10^2
c. 8.935 x 10^3
c. 8.935 x 10^3 = 8,935
Li took four practice tests to get ready for his Math test. Which of the following was his best score?
a. 36 correct out of 40?
b. 24 correct out of 30
c. 17 correct out of 25
a. 36 out of 40 = 90%
Fill in the missing number to make this equation true, if x = -3.
7 + 3x = 5x + ________
13
What would be the slope of the line parallel to
y = 3x + 4
3
Would the following side lengths form a right triangle?
10, 12, 14
no
Between what two numbers does the square root of 2 lie?
Between 1 and 2
What is the slope and y-intercept of the following?
y = 2x - 3
slope is 2
y-intercept is -3
Solve:
5x + 20 = -20
x = -8
Find the solution to the following system
y = 2(2 - 3x)
y = -3(2x +3)
There is no solution
A triangle has a leg of 8, a hypotenuse of 17. Find the other leg.
15