intergers
(-5) + (-6) =
–11
(2x + 1) : 2 = (x + 2) : 5
-1/8
A card is drawn at random from a deck of cards. Find the probability of getting a queen.
4/52 or 1/13
x - 4 = 10
x = 14
355 + (-163) =
192
2 : x = 3 : 9
x = 6
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?
10/20 or 1/2
f(x) = x2 + 5x –24
Find f(-1)
f(-1) = (-1)2 + 5(-1) –24 = -28
2436 + (-1064) =
1372
If twelve inches correspond to 30.48 centimeters, how many centimeters are there in thirty inches?
76.2 cm
A card is drawn at random from a deck of cards. Find the probability of getting the 3 of diamond.
1/52
14 – (18 – 40) =
36
A metal bar ten feet long weighs 128 pounds. What is the weight of a similar bar that is two feet four inches long?
about 29.87, pounds, or 448/15
Which of these numbers cannot be a probability?
a) -0.00001
b) 0.5
c) 1.001
d) 0
e) 1
f) 20%
A or C
12 + 5 + (-8) + 20 + (-16) =
13
One piece of pipe 21 meters long is to be cut into two pieces, with the lengths of the pieces being in a 2 : 5 ratio. What are the lengths of the pieces?
6 meters and 15 meters
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?
70/200 or 0.35