Probability/Statistics
The mode of 2, 3, 7, 4, 8, 7, 3, 9, 7
What is 7
Solve the inequality for y:
2y - 4x < 6
What is y < 3 + 2x
The formula for the area of a triangle
What is (1/2)bh
The cost of two tables and three chairs is $705. If the table costs $40 more than the chair, find the cost of the table and the chair.
What is the cost of each chair is $125 and that of each table is $165.
Two lines in a two-dimensional space that do not meet.
What is parallel.
A card is drawn at random from a deck of cards. Find the probability of getting the 3 of diamond.
What is 1 / 52
Solve for x and y.
4x+7y=−72
8x−4y=0
What is x=−4 and y=−8
A tabletop measures 2 m 25 cm by 1 m 50 cm. What is the perimeter of the tabletop?
What is the 7.5 m
Aaron is 5 years younger than Ron. Four years later, Ron will be twice as old as Aaron. Write an equation using x and y to find their present ages.
What is 6 years old for Ron and one year for Aaron.
Operations that undo each other; addition and subtraction, or multiplication.
What is inverse operations
How many different ways can you choose 3 books from the 8 books on a shelf?
What is 24
Simplify (6a4 bc2)(7a4 b3 c)
What is 42 a8 b4 c3
If the integer lengths of the three sides of a triangle are 6, and 8 and the hypothenuse has a length of x, what is the length of x?
What is 10
The agency gives summer jobs to 2352 students in 2018. The one-eighth was high-school students. The rest was undergraduates. How many undergraduates work via an agency in 2018?
What is x=2352⋅(1−1/8)=2058
What is the difference between complementary and supplementary angles?
What is complementary angles are two angles which form a right angle and whose measures add up to 90° while supplementary angles are two angles which form a straight line and whose measures add up to 180°.
The exam grades of 7 students are given below.
70 , 66 , 72 , 96 , 46 , 90 , 50
Find
a) the mean
b) the sample standard deviation
What is
Solve f(−14) if f(x)=−0.5x+42/x.
What is 4
The volume of a box with a length of 2 inches, height of 3 inches, and width of 5 inches?
What is 30 cu. inches
A cat can dig a hole at a rate of 16 feet per day. This cat starts digging for one week. A dog comes along and watches the cat dig and joins along. The dog digs for 24 feet per day. If a buried treasure is 2512 feet below surface, how long has the cat dug until they both reach the treasure?
What is 67 days
An expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s)
What is a polynomial
Out of 300 students in a school, 95 play cricket only, 120 play football only, 80 play volleyball only and 5 play no games. If one student is chosen at random, find the probability that
(i) he plays volleyball
(ii) he plays either cricket or volleyball
(iii) he plays neither football nor volleyball.
What is
(i) Number of times a football player is chosen = 120.
(ii) Number of times a volleyball player is chosen = 80.
(iii) Number of times a student is chosen who plays no games = 5.
What is a solution to this system of equations:
x+2y−z=6
2x+y+z=9
3x+4y+z=18
What is:
x=3
y=2
z=1
The weight of a rice packet is 40 kg 360 g. What is the total weight of 6 rice packets of the same weight?
What is 242 kg 160 g
You planned to have a picnic today, but it’s cloudy this morning and 50% of all rainy days start off cloudy. However, cloudy mornings are common; about 40% of days start off cloudy. It’s also summer, and the chance of rain is only 8% this time of year. What is the probability of it raining today?
What is .01
One of the six trigonometric functions, which, in a right triangle ABC, for an angle A, iscsc A = length of hypotenuse/length of side opposite angle A.
What is cosecant