Algebra
Which expression represents 4 less than twice a number, n ?
A. 4 - n B. n - 4 C. 4 - 2n D. 2n - 4
D. 2n - 4
The two given angles of a triangle are 36 degrees and 64 degrees. What is the messurement of the third angle?
80 degrees
Which of the following is the largest?
a) 2 + 0 + 2 + 3
b) 2 x 0 + 2 x 3
c) 2 x 0 x 2 x 3
a) 2 + 0 + 2 + 3
A bag contains 5 red balls, 4 blue balls and 2 yellow balls. The probability of selecting a yellow ball is:
A. 5/11 B. 2/6 C. 2/11 D. 1/2
C. 2/11
Solve for x.
2x+4-3x+6=82
x=-56
The radius of a circle is (2x+3)cm
The circumference of the circle is 43.982 cm
Solve for x.
x = 2cm
What is √(16√(8√(4)))?
8
A circular spinner is divided into three sections. An arrow is attached to the centre
of the spinner. The arrow is spun once. The probability that the arrow stops on the
largest section is 50%. The probability it stops on the next largest section is 1 in 3.
The probability it stops on the smallest section is
1/6
A sign at the fish market says, "50% off, today only: half-pound packages for just $3 per package." What is the regular price for a full pound of fish, in dollars?
12$
Two of the sides of an isosceles triangle are 6 and 8, what are all the possible perimeters for it?
20 and 22
How many numbers between 1-100, inclusive, are divisible by 2, 5, and 6?
3
In a game, there are 3 rounds, and you win the game by winning at least one round. You have a 30% chance to win each round. What is your chance to win the game?
65.7%
The average age of 5 people in a room is 30 years old. An 18-year old leaves the room. What’s the new average age in the room?
33 years old
The surface area of a cube is 54cm2, what is the ratio of its surface area to its volume? (SA/V)
2/1, or 2 (The volume is 27cm3)
A number is formed by combining the positive integers 1-100 in the form 1234567891011…979899100
How many digits does this new number have?
192 digits
A bag contains marbles of five different colours. One marble is chosen at random.
The probability of choosing a brown marble is 0.3. Choosing a brown marble is three times as likely as choosing a purple marble. Choosing a green marble is equally likely as choosing a purple marble. Choosing a red marble is equally likely as choosing a yellow marble. What is probability of choosing a marble that is either red or green?
0.35 | 35% | 35/100