Tigers
Does 3.42 have 3 significant digits?
Yes!
The equation s = 12t^2/5 represents the value of a share of Computer Solutions' stock where t is the number of months the stock has been sold. What is the price of the stock after 243 months?
$108
Is 3x - 6 + 5 +17x equivalent to 20x + 1? 19?
NO & NO
The side length of a cube can be found with the expression v^1/3 where v is the volume. If the volume is 512 cubic cm what is its side length?
8
Allie bought 5 lbs of onions, x lbs of squash, and y pieces of corn. Write a simplified expression that represents the amount she spent on produce.
Onions = $0.96/lb, Squash = $0.79/lb, Corn = $0.75 each
4.80 + 0.79x + 0.75y
Clinton's garden is 32.55 meters long & 12.50 meters wide. Write the perimeter of the garden with the correct number of significant digits.
90.1 m
Which sets of numbers does -3.5 belong to? (whole, integers, rational, real)
Rational & Real
Simplify y^2 -2(x + 7y^2).
-2x - 13y^2
Simplify the expression 16^3/4 * 10,000^1/2.
800
Serena bought z lbs of squash and twice that weight of potatoes. Write a simplified expression for the amount she spent on produce.
Squash = $0.79/lb, Potatoes = $0.45/lb
1.69z
A water bottle contains 1.5 liters of water. Approximately how many gallons of water does the bottle contain. 1 gallon = 3.78541
0.4 gallons
Does the square root of 2 divided by the square root of 2 = 1 prove that the set of irrational numbers is not closed under division?
YES!
What is 199 miles in kilometers? Round to the nearest kilometer. 1 mi = 1.60934 km
320 km
Simplify 25^-2
1/625
Which of the following numbers is an integer?
0.5, 2/3, -7, 7 1/2
-7
What is 196^1/2?
14
What is (z - 3)^2 + 5 when z = -2?
30
Darryl skated 2.75 km in 90 minutes. Find Darryl's speed in miles per hour. Round to the nearest hundredth. 1 mi = 1.60934 km & 1 hour = 60 min.
1.14 mph
Is the set {-3, 0, 3} closed under multiplication?
No; -3*-3 = 9. 9 is not in the set.
Which of the following numbers is an irrational number?
5, -2, pi, 0.7
pi
Simplify 7y(y^-8 * y^-2).
7y^-9
What is xy - 12x^2 when x = -2 and y = -6?
-36
A store has a length of 215 ft and a length of 45 ft. What is the area of this store to the nearest square meter? 1 ft = 0.3048 m
899 m^2
Find -10z + 2y / z when z = -2 and y = 6.
14
Is the set {-2, 0, 2} closed under addition?
No; -2 + -2 = -4 and -4 is not in the set.