Scale Copies & Proportions
It is the definition of scale factor?
What is the factor by which every side length in the original is increased or decreased to create a copy
Write the formulas for:
radius, diameter, circumference, and area
radius -> (1/2)d
diameter -> r(2)
circumference -> 3.14(d)
area -> 3.14(r2)
convert 23% to a decimal AND a fraction
23%
0.23
23/100
The fraction that is equivalent to 2.5
What is 2 1/2
x + 8 = -2
What is -10
A triangle has the side lengths of 2, 4, and 7. Which of the following could be a scaled copy...
A) 1, 2, and 3
B) 1.5, 3, and 5.25
C) 2.5, 5, and 8.5
What is 1.5, 3, and 5.25
Find the radius of a circle, if the circle has a diameter of 437
What is 218.5
Mr. Ker's cell phone bill was $50 last month.
This month Verizon raised his bill.
The new bill is 32% more than last month's.
How much more is the bill?
What is $16
0.2 + (-1.2)
What is -1
2x + 5 = 23
What is 9
A map has a scale of 2cm = 15 miles. A trip will be 7cm on the map, the actual distance will be...
What is 52.5 miles
Find the diameter if the circumference of a circle is 18.84
What is 6
Mr. M bought a new iPad for $950.13.
Tax on the iPad is 11%.
What is the cost with tax?
What is $1,054.50
-8 - 3
What is -11
3b - 5 - 2b
1b - 5
Janine sells 16 apples for $8.00. What is the unit price for each apple?
How much would she earn if she sold 64 apples?
What is $0.50 per apple.
Janine would earn $24 for selling 64 apples.
Find the circumference of a circle if its diameter is 45
What is 282.6
Mrs H went shopping and found a shirt for $42.
It was on sale for 15% off.
What is the price of the shirt now?
What is $35.70
-3 x 5
What is -15
A football team gained 25 yards on one play and then lost 32 yards on the next play. What was their total loss or gain of yardage?
What is a loss of 7 yards?
The equation y = 55x represents the rate of the Long Island highway speed limit, in miles per hour. Let x represent the number of hours driven and y represent the total miles driven.
How long was Francis driving if he drove 247. 5 miles at the speed limit.
What is 4.5 hours.
Find the area of a circle if it's radius is 52.4
What is 8,612.68
Josh flips a quarter 20 times.
It falls on tails 30% of the time.
How many times does it fall on heads?
What is 14 times
-15 / -5
What is 3
m/-2 + 7 = 21
What is -28