Number System
1.5 + (-3.4)
Find the COP of this data set.
(1,3)
(2,6)
(3,9)
y / x
COP is 3.
3x + 17 - 2x - 12
x + 5
Do these measurements make a triangle?
3, 5, 7
Yes
What is the mode of the following numbers?
1, 2, 2, 4, 3, 2, 3, 5, 1, 2
2
1/3 + (-3/6)
Joan wants to buy a TV. The TV costs $200. It has a tax of 5%.
What is the cost of the TV, plus tax?
$210
A garden has a length of 90 and a width of x.
Write an expression for the perimeter of the rectangular garden.
Find the area of the triangle.
36 units squared
Find the mean of this data set.
5, 6, 6, 7, 8, 4
On a test, wrong answers are worth -5.25 and right answers are worth 3.5 points. So far, Marshall has one right and one wrong answer.
What is Marshall's current score?
-1.75
Find how many people can ride the rollercoaster if you have 7 cars.
Solve.
0.06x - 0.18 = 0.12
x = 5
A cube has the dimensions 1.6, 3.2, and 4.
Find the volume of the cube.
20.48 units cubed
Ms. Rose puts the names of all the girls in a box and chooses two without looking. Then she does the same for the boys' names.
Is this a random sample or biased?
Random
James baked 5 1/4 dozen PB cookies and 4 5/6 dozen oatmeal cookies.
Estimate the number of dozens of cookies he baked.
5 + 5 = 10
A shirt costs $22. It is on on sale for 40% off.
What is the discounted price of the shirt.
$13.20
Stephanie wants to buy s tomato plants. Diego wants to buy d tomato plants. Each plant costs $7. Stephanie uses a coupon for $25 off the total cost.
Which expression represents the total cost with the discount?
a) 7(s+d) - 7(0.25)
b) 7(s+d) - 25
c) 25(s+d) - 7
B
One angle is 38 degrees.
The other angle is x.
Both angles add up to be a complementary pair.
What is the measure of angle x?
52 degrees
A jar of beads is being sold.
2/5 of the jar are blue beads.
the remainder of the beads are green.
What percentage of the beads are green?
3/5 or 60%
Solve the following 2 problems.
75 / -5 =
-9 x (-4) =
-15
+36
Last year, a computer was bought for x dollars. The computer decreased in value and now has a value of 0.65x dollars. Which of the following expressions represents the current value, in dollars, of the computer?
A) x + 0.35x
B) x – 0.35x
C) x + 0.65x
D) x – 0.65x
B
Devon must collect less than 26 ounces of water samples for a science fair project.
Devon already has one water sample of 3.50 ounces.
This week, Devon will collect additional water samples of 2.25 ounces each.
Which of the following inequalities can be used to find x, the possible number of water samples Devon will collect this week?
A) 3.50x + 2.25 < 26
B) 3.50x + 2.25 > 26
C) 3.50 + 2.25x < 26
D) 3.50 + 2.25x > 26
C
A circle has a radius of 6cm. What is the area of the circle?
A = pi x r x r
113.04 cm sq
The manager of a company wants to survey a representative sample of the company’s employees to choose a company logo. Which of the following is a representative sample of the company’s employees?
A) every third employee from the largest department in the company
B) every employee who enters the employee cafeteria
C) every third employee on the company’s payroll
D) every employee who is under the age of 35
C