Vocab
A rate with a denominator of 1
Unit Rate
The runner ran 100 km in 20 seconds. What is their speed in km/sec?
5km/sec
What is 7% as a decimal?
0.07
What is the sum of the three angles of every triangle?
180
The diameter of a cirlce is 5m. Find the radius.
2.5m
A comparison of two quantities using division
Ratio
Solve for x: 3/5 = x/10
6
What number is 40% of 80?
32
What do you call a triange with 2 congruent sides?
Isosceles
Find the area of a triangle with a base of 12ft and height of 5ft.
30ft2
An equation stating two ratios are equivalent
Proportion
I buy 30 ramen for $4.50.Find the unit cost for 1 ramen.
$0.15
The $150 headphones are on sale for 25% off. What is the sale price?
$112.50
Two angles are vertical to each other. The first angle is 85 degrees. What is the measure of the other angle?
85 degrees
Find the area of a circle with a diameter of 6in.
28.26in2
In the proportion a/b = c/d, the products a(d) and b(c)
Cross Products
Solve for x: 12/25 = 3/x
6.25
Find the interest: I = Prt
I= ?
P = $5000
r= 2%
t= 5 years
$500
Two angles in a triangle are 46 and 73. What is the measure of the third angle?
61
Find the perimeter of a semi-circle with a diameter of 10cm.
25.7cm
The rate of change between any to points on a line
Slope
A line goes through the points (1, 1) and (3, 2), what is the slope of the line?
1/2
Identify the percent of change as an increase or a decrease and find the percent of change.
12 to 9
25% decrease
Two angles are adjacent and complementary angles. One angle measures 28 degrees. The other angle measures (x-12). Find the value of x.
74
A garden is made in the shape of a square with a semicircle added at the top that matches the length. The length of one side of the garden is 8 feet. What is the area of the garden. (Hint: Draw a picture)
89.12ft2