Pre-Algebra
A radio station offers free competitions. Normally, one in every twenty contestants wins the free competition. What is the probability of losing the free competition?
A. 1/20 B. 1/19 C. 19/20 D. 19/1 E. 20/19
C. 19/20
How many real solutions exist for the following equation: x^2 + 8 = 0
A. 0. B. 1. C. 2. D. 4. E. 8
A. 0
A football field is 100 yards long and 30 yards wide. What is the area of the football field in square yards?
3000
What is the slope of a line that is perpendicular to the line
4𝑥−2𝑦=12?
-1/2
Which of the following equations is equal to √45?
A. 1 ÷ 45. B. 5√9. C. 9√5. D. 3√5 E. 5√3
D. 3√5
A box is manufactured to contain either laptop computers or notebook computers. When the computer systems are removed from the box, it is reused to hold other items. If the length of the box is 20cm, the width is 15cm, and the height is 25cm, what is the volume of the box?
7500 cm3
A company purchases cell phones at a cost of x and sells the cell phones at four times the cost. What equation below represents the profit made on each cell phone?
A. x. B. 3x. C. 4x. D. 3 - x. E. 4 - x
B. 3x
An internet provider sells internet packages based on low monthly rates. The price for the internet service depends on the speed of the internet connection. The chart below indicates the prices of the various internet packages: Price in dollars (P) 10, 20, 30, and 40 Gigabyte speed (S) 2, 4, 6, and 8 Which equation represents the prices of these internet packages?
A. P = (S - 5) +5. B. P = (S + 5) x 5.
C. P = 5 ÷ S. D. P = S x 5. E. P = S ÷ 5
D. P = S x 5
If one leg of a triangle is 5cm and the other leg is 12cm, what is the measurement of the hypotenuse of the triangle?
A. 5√12cm
B. 12√5cm
C. √17cm
D. 13cm
E. 17cm
D. 13cm
| √4 - 12 | =?
10
Write 0.00012 in scientific notation
1.2 x 10^(-4)
A right triangle has a leg that is 4in long and the hypotenuse is 5in long. What is the area of the triangle?
F. 4. G. 5. H. 6. J. 12. K. 20
H. 6
In a shipment of 100 mp3 players, 1% are faulty. What is the ratio of non-faulty mp3 players to faulty mp3 players?
A. 1: 100. B. 99: 100. C. 1: 99
D. 99: 1. E. 1: 499
D. 99: 1
What is the largest possible product of 2 even integers whose sum is 22?
F. 11. G. 44. H. 100. J. 120. K. 144
J. 120
In an isosceles triangle, the vertex angle is 36°. What is the measure of one of its base angles?
72°