Geometry
What is the formula for area of a circle?
Area= pi x radius x radius
What is (-9) + (-8) + (-5)?
-22
What is 10% of 110?
0.10 x 110 = 11
Which expression is equivalent to -5(-3y + 7x)?
a) 15y -35x
b) -15y + 35x
c) -8y + 2x
d) -8y + (-2x)
-5 x -3y = 15y
-5 x 7x=-35x
15y - 35x
John paid $25.30 for 11 1/2 pounds of jelly beans. What was the price per pound?
25.30 / 11.5 = $2.20
What is the circumference of a circle with a radius of 3 feet?
c= pi x diameter
c=3.14 x 6 = 18.84 feet
Which is a larger value?
-6, -4, or (-1 x -5)?
-1 x -5 = 5
If 3 out of 5 students are wearing hoodies, what percent are NOT wearing hoodies?
3/5=.60
2/5= .40 = 40%
Solve for x.
3 + 3x = 12
3 + 3x = 12
-3 -3
3x = 9
/3 /3
x=3
On a graph, how do you know if it is a proportional relationship?
The graph of the data is a straight line, going through the origin.
The original side lengths of a rectangle are 2 and 4. If the rectangle is enlarges by 3, what are the new side lengths and new area?
2 x 3=6
4 x 3=12
area = 12 x 6= 72
what is 2/3 + 2/6 in simplest form
Common Denominator (Bottom #)
Add Numerator (top #)
4/6 + 2/6 = 6/6 = 1
Which is more, 23% of 71?
or 71% of 23?
.23 x 71 = 16.33
.71 x 23 = 16.33
SAME!!
Distribute 3(2x+6)
6x+18
The data set shows a proportional relationship. What is the constant ratio between y and x?
{(3, 36), (4, 48), (10, 120), (16, 192), (18, 216)}
Y/X 36/3= 12
48/4= 12
120/10= 12
If angle A is supplementary to a 60' angle, what is the measure of angle A?
180-60= 120'
what is (-18) / 3
-6
A student scored 18 points on a test worth 24 points.
What percent did the student score?
18/24 = .75 = 75%
You buy 5 movie tickets and spend $31.25. How much was each ticket?
31.25 / 5 = 6.25
Mrs. Baker’s 7th grade English class is making get well cards to donate to the local children’s hospital. They make 124 cards in 4 hours. Which equation represents the relationship between the number of cards made (c) and the number of hours (h), assuming they work at a constant rate?
a) c = 124h
b) c = 120h
c) c = 31h
d) c = 4h
124/4= 31 cards per 1 hour
c) c=31h
what is the Volume of a cube with side lengths 3 feet?
Volume of a cube is LxWxH
3x3x3 = 27 ft cubed
11-(-6)=?
11 -(-6) =
11 + 6= 17
How do you convert a percent to a decimal?
Divide the number by 100, which is equivalent to moving the decimal point two places to the left.
David goes into the candy store with $5. He buys 9 peppermints for $1.35 and some sour candies. Each sour candy costs $0.25. What algebraic equation could help solve how the maximum sour candies he could buy?
0.25x + 1.35 = 5
Shane wants to buy a new coat from his favorite department store. The current price of this coat is $180.00. On Tuesday, the store is taking 30% off of all coats. What is the sale price of the coat?
100%-30%= 70%
180 x .70 = $126
or
180 x .30 = $54 180-54= $126