Show:
Inequalities
Expressions and Equations
Area and Circumference of Circles
Proportional Relationships
Miscellaneous
100
When dividing by a positive number the inequality _________ ____ _________. When dividing by a negative number the inequality ________.
stays the same flips
100
What expression is equivalent to 3x + 4x + 5? a. 12x b. 7x - 5 c. 7x + 5 d. -12x
c.
100
The formula for the area of a circle is...
pi x r squared
100
A graph is proportional when it goes through the _________ and is a _________ _________.
origin straight line
100
What is the number that makes the equation true? 0.54 + 17/100 = __/100 + 17/100
54
200
Draw a number line demonstrating the inequality x > 3
open circle on 3, arrow pointing right
200
Select the expression that is equivalent to -9x(10x - 3) a. -90x - 27 b. -90x + 27 c. -90x - 3 d. -90x + 3
b.
200
The formula for the circumference of a circle is...
pi d 2 pi r
200
The table shows a proportional relationship between x and y. Write the constant of proportionality(r) AND an equation in the form y=rx. x y 3 12 5 20 7 28
r=4 y=4x
200
Charlie wants to estimate how much time the eighth grade students in his school spend on their homework each night. Which sampling method would give Charlie the best estimate? a. Survey a random sample of middle school students. b. Survey a random sample of eighth grade students. c. Survey eighth grade students who are on the honor roll at school. d. Survey a random sample of students in after-school tutoring.
b.
300
Solve the inequality: 4x + 5 < 9
x < 1
300
Emmanuel added two integers. Which condition will always give Emmanuel a negative solution when he adds two integers? a. Both integers have negative values. b. Both integers have positive values. c. One integer has a positive value, and one integer has a negative value. d. The values of the two integers are opposites.
a.
300
What is the area of a circle that has a radius of 10?
314
300
Jasmine makes 50 gallons of paint by mixing 24 gallons of white paint and 26 gallons of purple paint. What part of every gallon is purple paint? Represent this as a decimal and a percentage.
.52 and 52%
300
Zack built a wooden, three-dimensional solid. He built it by stacking a series of smaller, identical solids one on top of another. Each of the smaller solids had the following characteristics: -Each had two parallel bases -The bases were squares -The two bases were congruent What shape is Zack's three dimensional solid constructed of the smaller solids? a.Cylinder b.Square pyramid c.Square prism d.Trapeziod
c. square prism
400
Solve the inequality: -10x + 8 > 28
x < -2
400
Select all expressions that are equivalent to 5x+ (x +6) + 3x a. 8x + 6 b. 6x + 6 + 3x c. 5x + 6 + 3x d. 9x + 6
b and d.
400
What is the circumference of a circle that has a diameter of 24?
75.36
400
Adrianna uses 1 1/4 cups of pretzels for every 1/2 cup of raisins when making a snack mix. Enter the number of cups of pretzels Adriana uses for 1 cup of raisins.
2 1/2 cups
400
A dance instructor earns $75 for teaching 3 classes. The instructor receives a 10% raise. Enter how much the instructor earns, in dollars, per class after the raise.
$27.50
500
Solve and graph the inequality: -3x - 5 < -2
x > -1
500
Katie buys several pairs of socks for $3 per pair. Which equation represents Katie's total cost, c, when she buys s pairs of socks and why? a. The equation c=3s because the number of socks is multiplied by 3 to get the total cost. b. The equation s=3c because in order to get the number of socks purchases, the total cost is multiplied by 3. c. The equation c=3s+1 because the number of socks is multiplied by 3 to get the total costs, and then 1 is added to represent the first pair of socks. d. The equation s=3c+1 because to get the number of socks purchased, the total cost is multiplied by 3, and then 1 is added to represent the first pair of socks.
a.
500
What is the area of a semi circle that has a radius of 8?
100.48
500
David uses 1/2 cup of apple juice for every 1/4 cup of cranberry juice to make a fruit drink. Enter the number of cups of apple juice David uses for 1 cup of cranberry juice.
2 cups
500
Michelle bought five packs of crayons for $13.75. What is the cost of a pack of crayons, in dollars, if all the packs cost the same?
$2.75