A rectangle has a length of 8cm and a width of 5 cm. What is its perimeter?
26cm
If x=7, what is 2x+3?
17
How many solutions does this have?
3(5x-3)=15x+9
In a group of 30 students, there are 14 girls and 4 of them can speak French. 6 of the 16 boys can speak French. If a student is selected randomly from the group, find the probability that the selected student is a boy who cannot speak French. Simplify your answer.
1/3
If five cats catch five mice in five minutes, how long will it take 100 cats to kill 100 mice?
5 minutes
Right Triangle has legs of length 6 cm and 8 cm. What is the length of the hypotenuse?
10 cm
What is the least common multiple of 4 and 6?
12
How many real roots does the equation y=(x^4)-(4x^2)+4?
2 roots (They are: +/-sqrt(2))
Jill is playing cards with her friend when she draws a card from a pack of 20 cards numbered from 1 to 20. What is the probability of drawing a number that is square?
1/5
0, 1, 1, 2, 3, 5, 8, 13, 21, …
What are the next three numbers in the sequence?
34, 55, 89 (Fibonacci Sequence)
The base of the triangle is 10sqrt(3) units. What is the length of the altitude to the base?
5 units
Simplify 4/9 divided by 2/3.
2/3
Find the vertex of the equation f(x)=(x^2)-4x+3.
(2, -1)
What is the probability of getting a sum of 7 when two dice are thrown?
1/6
What is the number of the parking space covered by the car?
87 (look upside down to 86, _, 88, 89, 90, 91)
In a triangle ABC, angle A measures 30 degrees, angle B measures 105 degrees, and angle C measures 45 degrees. If side AB is 10 units long, what is the length of side AC?
13.66 units
Solve for 3x^2-12=0
x = +/-2
What is x?
log(x)+log(x-3)=1
5
A coin is thrown 3 times. What is the probability that at least one head is obtained?
7/8
How many triangles are here?
24
From the given figure, find tan P – cot R.
0
Find the domain of x:
|x - 3| < 5
-2<x<8 OR (-2, 8)
What is x?
log(x^2 - 4) = 2
x= +/-2sqrt(26)
On a shelf there are 60 novels and 20 poetry books. Person A chooses a book at random off the shelf and leaves with it. Shortly after, Person B chooses another book at random. Calculate: If it is known that Person B chose a novel, what is the probability that the book selected by Person A was a poetry book?
20/79
The Missing Dollar...
Three friends check into a hotel room that costs $30. They each contribute $10, paying a total of $30. Later, the hotel manager realizes there's a special discount and decides to return $5 to the friends. He gives $1 back to each friend and keeps $2 for himself.
Now, each friend has paid $9 (totaling $27) and the manager has $2. If you add $27 (paid by the friends) and $2 (kept by the manager), it adds up to $29. So, where is the missing dollar?
There is no missing dollar.