Solve for y:
y=5x
4x+5y=87
15
A bag contains only blue balls and green balls. There are 6 blue balls. If the probability of drawing a blue ball at random from this bag is 1/4, then the number of green balls in the bag is _____
18 green balls
There are coins placed flat on a table according to the figure. What is the order of the coins from top to bottom?
C,E,D,A,B
Name all the degrees of the unit circle in 30 seconds
30,40,60,90,120,135,150,180,210,225,240,270,300,315, 330
When 142 is added to a number, the result is 64 more than 3 times the number. Find the number.
39
The 600 students at King Middle School are divided into three groups of equal size for lunch. Each group has lunch at a different time. A computer randomly assigns each student to one of three lunch groups. The probability that three friends, Al, Bob, and Carol, will be assigned to the same lunch group is approximately______
(1/9)
RIDDLE! If you answer this riddle in a minute you get 200 points!
How can you take 2 from 5 and leave 4?
F I V E
Remove the two letters F and E from 5 and you get IV
Find all sides of a right triangle that has a perimeter of 60 and an area of 150.
15, 20, 25
A garden measuring 12 meters by 16 meters is to have a pedestrian pathway installed all around it, increasing the total area to 285 square meters. What will be the width of the pathway?
The width of the pathway will be 1.5 meters.
Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?
A. 1/2
B. 2/5
C. 8/15
D. 9/20
(D) 9/20
If a tire rotates at 400 revolutions per minute when the car is traveling 72km/h, what is the circumference of the tire?
3 meters
Multiply these imaginary numbers into a real solution(which still has imaginary numbers)
(-7 + i)(-3 + 6i)
15-45i
Solve for n.
14n^2=7n+21
n=3/2
What is the probability of getting a sum 9 from two throws of a dice?
A. 1/6
B. 1/8
C. 1/9
D. 1/12
(C) 1/9
Which civilization founded math?
A. Sumer
B. Babylonian Empire
C. Egypt
D. China
E. Ancient Greece
E. Ancient Greece
The distance light travels in one year is approximately 5,870,000,000,000 miles. The distance light travels in 100 years is:
587 × 10^12