Probability
Functions
Geometry/Pythagorean Theorem
Proportions
Solving Equations
100
A jar contains 3 red marbles, 7 green marbles and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that this marble is white?
1/2
100
Is this a function?
No. :b
100
Find the circumference of a circle with a radius of 3 inches.
C=6π in. or ≈18.85 in.
100
Find the unknown value in the proportion:
2 : x = 3 : 9
x=6
100
solve for x.
x − 2 = 4
x=6
200
Which of these numbers cannot be a probability?
a) -0.00001
b) 0.5
c) 1.001
d) 0
e) 1
f) 20%
a) and c)
200
Is this a function?
y equals x to the second power plus four.
yes :)
200
If one leg of a triangle is 6 inches, and the hypotenuse is 10 inches, what is the length of the other leg?
8 inches
200
Which number is to be added to each of 2, 4, 6 and 10 to make the sums proportional?
2
200
solve for x (there are two answers)
(x−3)(x−2) = 0
x=2 or x=3
300
A card is drawn at random from a deck of cards. Find the probability of getting a queen.
4 / 52 or 1 / 13
300
Is the following relation a function? If not, why not? {(-1, 3), (4, 1), (-1, 2), (1, -3)}
No, because the input -1 has multiple outputs.
300
What is the equation to find the volume of a triangular prism?
V= base area times length
300
Find two numbers whose mean proportional is 16 and the third proportional is 128.
8 and 32
300
5 = 3(s – (–5))
s = -3 1/3
400
Two coins are tossed, find the probability that two heads are obtained. Note: Each coin has two possible outcomes H (heads) and T (Tails).
1/4
The sample space S is given by.
S = {(H,T),(H,H),(T,H),(T,T)}
Let E be the event "two heads are obtained".
E = {(H,H)}
We use the formula of the classical probability.
P(E) = n(E) / n(S) = 1 / 4
400
which one is a function?
the top one.
400
How do you find the surface area of a sphere?
A=4 times pi time radius squared
400
Find the unknown value in the proportion:
(2x + 1) : 2 = (x + 2) : 5
x=−1/8
400
2(w + 4) = –2 + (–3)
w = -6 1/2
500
The blood groups of 200 people is distributed as follows: 50 have type A blood, 65 have B blood type, 70 have O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?
0.35
P(E) = Frequency for O blood / Total frequencies
= 70 / 200 = 0.35
500
Determine which ones are functions and which ones aren't.
a) yes
b) no
c) yes
d) no
500
One side of a right triangle is 4 times the square root of 10 cm. Find the length of its other side if the hypotenuse is 13 cm.
3 cm
500
Find the fourth proportional of 6, 9 and 12.
18
500
5(a + 4) = –3 + 2
a = -4 1/5