Solving Algebra
7x = 28
x = 4
-2x + 7 + x
-x + 7
What is the formula for the area of a triangle?
1/2 x base x height
What is the sample space for randomly selecting one of the school houses?
{Incana, Ornata, Serrata, Formosa}
Statistically speaking, a 'census' asks what group of people?
Everyone
3x + 8 = 14
x = 2
4x + 5x2 - 2x + 12 + 3x2
2x + 8x2 + 12
What is the formula for the area of a circle?
pi x r2
What is the sample space for choosing a multiple of 7 less than 30?
{7, 14, 21, 28}
Is 'Breakfast Cereal Brands' a categorical or numerical variable?
Categorical
x/6 - 5 = 0
x = 30
12 + 21x
3(4 + 7x)
What is the formula for the area of a parallelogram?
base x height
In a game of pool, you sink a random ball on the break - what is the theoretical probability that it is not the 8 ball?
14/15
What is the mean of the following set of numbers?
1, 3, 4, 5, 9, 9, 11
6
25 - 3x = 37
x = -4
7x - 6x2 + x
2(4x - 3x2)
What is the formula for the circumference of a semicircle
pi x r + 2r
OR
1/2 x pi x d + d
A piece from a 6x6 jigsaw puzzle is chosen at random. What is the probability that it is NOT an edge piece?
4/9 (simplified from 16/36)
What is the median of the following set of numbers?
10, 12, 12, 15, 15, 17, 18, 18, 18, 19
16
7(x + 3) = 42
x = 3
2x * -2x + 4x2 + 5
5
What is the formula for the area of a trapesium?
h(a+b)/2
A class contains 35 students, of whom 14 are male. What is the probability that a chosen student is not male.
3/5 (from 21/35)
What is the mean of the following set of numbers?
1, 3, 12, 15, 16, 23, 24, 24, 25, 28, 31, 35, 36
21