Chapters 1 and 2
_____________________ is the distance a number is from zero.
Translate the following expressions into a word phrase: x - 3
3 less than x
-4(19)
-76
Suppose an angle measures 19˚. What is the measure of its complement?
71˚
This represents all the exam scores for Mrs. Lee’s class {90, 93,74,76, 85, 83, 98, 85, 88, 91}.
Find the median.
86.5
Find the distance between 19 and -31
50 units
Translate the following word phrases into equations or inequalities: Four is less than a
4 < a
-8(-7)
56
Suppose an angle measures 39.5˚. What is the measure of its supplement?
140.5˚
This represents all the exam scores for Mrs. Lee’s class {90, 93,74,76, 85, 83, 98, 85, 88, 91}.
Find the mode.
85
If x is the same distance from 4 as it is from 12, what is x?
8
34 + m = -2
m = -36
2(y – 5)
2y-10
A triangle has three angles that measure (x), (x+7), and (x+11). Find the measure of each angle.
x= 54
x+7= 61
x+11=65
This represents all the exam scores for Mrs. Lee’s class {90, 93,74,76, 85, 83, 98, 85, 88, 91}.
Find the range.
24
-|-5| + |-6|
1
In an Alaskan village, the temperature rises 19F between 3p.m. and 8 p.m. If the temperature at 8 p.m. is -8F, then what was the temperature at 3 p.m.?
Define variable X = temp at 3 pm
Equation X + 19 = -8
Solve X = -27F
31 kids went out trick or treating and collected a total of 1442 pieces of candy. If they want to share it evenly, how many pieces does each kid get? How much, if any is left over?
46 pieces each with 16 pieces left over
Define the Triangle Sum Theorem
sum of all interior angles in a triangle equal 180 degrees
This represents all the exam scores for Mrs. Lee’s class {90, 93,74,76, 85, 83, 98, 85, 88, 91}.
Find the mean (round to the nearest whole number).
86
-11+ (-15)
-26
Andy has a bag of marbles, he gave Eli 26 of his marbles. If Andy now has 73 marbles, how many marbles did he have in the beginning?
Define variable m = # of marbles at the beginning
Equation m – 26 = 73
Solve m = 99 marbles
Catherine and Jenna went to the movie snack bar to buy some snacks. They bought 2 cokes and a bag of popcorn which cost $6. If they spent $12 for all the snacks, how much did each coke cost?
Step 1: c = cost of each coke
Step 2: 2c + 6 =12
Step 3: c = $3
A quadrilateral has three angle measures of 44˚, 87˚ and 136˚. Draw a diagram (not to scale) and find the measure of the 4th angle.
93˚
A bag contains 4 green marbles, 7 blue marbles, and 1 black marble. What is the probability of picking a green marble?
4/12 or 1/3