Calculator Magic
-2|-3|+|-5|-|8|=?
-9
Which of the following is a solution to the equation x2 +16x=0?
-16, -4, 4, 16, 20
-16
Kathy's average score after 3 math quizzes was 83. Her score on the 4th quiz was 87. If all 4 of the quizzes are weighted equally, which of the following is closest to her average score after 4 quizzes?
84
20+2-1+2-2=?
1 and 3/4 or 7/4
What is 161/4?
2
Given f(x)=2x2-3x-5, what is the value of f(-2)?
9
Lisa walked 1 and 1/4 miles on Tuesday and 2 and 2/3 miles on Wednesday. What was the total distance, in miles, Lisa walked during those 2 days?
3 and 11/12 or 47/12
Which of the following represents 1/6 of 9?
1.5
If the following system has a solution, what is the y-coordinate of the solution?
3x-2y=4
2x+y=5
1
If x is a real number such that x3=216, then x2 +x=?
42
Susan drove to visit a friend. She drove 345 miles in 5 hours and 45 minutes. What was her average speed, to the nearest tenth of a mile per hour?
60
What is the least common denominator for adding the fractions 1/15, 2/54, and 3/8?
1080
Log2 16=?
4
If 12x is 40% of 180, then x=?
6
At a plant that manufactures soup cans, 5,000 pounds of aluminum is needed to produce 3,600 soup cans. How many pounds of aluminum are needed to produce 450 soup cans?
625
In scientific notation, 2,500,000+500,000=?
3.0x104, 3.0x105, 3.0x106, 3.0x107, 3.0x108
3.0x106
Using the complex number I, where i2=-1.
2/(1+i) x (1-i)/(1-i) =?
1-i
If h(x)=g(x)-f(x), where f(x)=-4x+5 and g(x)=2x-7, then h(x)=?
6x-12, -2x-12, -2x-2, 6x+2, -2x+2
6x-12
Printer A prints x times as fast as Printer B. Printer C prints y times as fast as Printer A. Printer C prints how many times as fast as Printer B?
y/x, x/y, xy, y-x, y+x
xy
If the probability that a specific event will occur is 0.05, what is the probability that the event will not occur?
0.95