n= 115
n/5 means that n is divided by 5.
To get the variable by itself you have to do the opposite operation. Multiply both sides by 5 and n= 23 *5 or 115
100
Use three words to describe a shape that has 3 sides that are different lengths.
irregular, scalene, triangle
100
What is 5 squared plus 2 cubed
33
5 squared is 5 *5 =25
2 cubed is 2*2*2 = 8
25 +8
100
Do the ratios 5::6 and 25 :: 36 form a proportion?
No.
When you multiply across the numbers don't equal each other.
200
What is 9/36 as a percent?
25%
200
If a= 12 and b= 7 then what is 2a- b?
17
200
Can a rectangle that has a height of 3cm and length of 7cm have a perimeter of 21cm and an area of 21cm?
No, because it's perimeter would only be 20!
200
Javon is thinking of a number between 20-42. It is a composite number that is also a square number. It has 4 and 3 as factors. What is the number?
36
composite means it has many factors
square means it's the product of two numbers multipled by itself 6*6 = 36
a factor can be multiplied by another factor to create the number you are looking for
3*12 = 36
4* 9= 36
200
Jeremy Lin is 6ft 3in and Dwayne Wade is 76in. Who is taller and by how much?
Dwayne Wade is taller by 1 inch
300
Rank these decimals from least to greatest:
0.3, 0.25, 0.04
0.04, 0.25, 0.3
300
Is 14 a solution for 2x > 24
Yes.
Because first you have to get x by itself by dividing both sides by 2. Then you get x> 12. Put the 14 in place of x: 14 is greater than 12.
300
In a regular pentagon, what is the measure of one angle?
108
First you have to find the angle sum of a pentagon
angle sum = n-2 * 180
pentagon has 5 sides so : 5-2 *180 = 540
Then you have to divide the angle sum by the number of angles there are
540 / 5 = 108
300
What is another way to write 3(x-2)
(3 * x)- (3 * 2)
Pay attention to the minus sign
300
If the distance from L.A to Oakland is show on a map as being 6cm apart and the scale shows that every 1.5 cm is 120 miles, then what is the actual distance from L.A to Oakland in miles?
480 miles
400
Ms. Zaniolo's has two classes of 24 scholars each. If 1/4 of the class did not pass last week's math test then, how many scholars did pass?
36 scholars passed the test.
Because Ms. Zaniolo has 48 scholars in total. If 1/4 did not pass, then 3/4 did pass. To find 3/4 of 48 you have to turn 48 into a fraction and multiply
48/1 x 3/4 = 36
400
Trevion has x number of baseball cards, and Anthony has 3 times as many as Trevion and Aj has 4 less then Trevion.
Write an equation that shows how many they have in all
x + 3x + x-4
x represents how many Trevion has
3x represents how many Anthony has
x-4 represents how many Aj has
400
A triangle has three sides. The longest side is 30 feet long. The shortest side is 20 feet less than the longest side. The length of the third side is unknown. If the perimeter of the traingle is 60 feet what are the lengths of all the sides?
30, 10, 20
( these are the lengths in any order is correct)
perimeter= side 1 +side2 + side3
60=30 + (30-20) + n
400
Leena is making pancakes for breakfast. The recipe says that one batch of flour makes 18 pancakes. If she needs to make 40 pancakes how many batches of flour will she need?
3
Because 2 batches would not be enough
18 * 2= 36
400
Leah loves red jelly beans. If a box of jellie bellies has 12 green, 8 yellow and half as many red as yellow, what is the probability that she will pull a red on from the box?
Show it as a percent.
about 16%
explanation:
total= green + yellow+ red
green=12
yellow=8
red= yellow/2= 4
total= 12+ 8+4= 24
probability = red/ total= 4/24
4/24= 1/6= 0.16
500
Kylie found a $500 dell laptop at Best Buy for 20% off and a $550 macbook at the Apple store for 1/4 off. Where should go to find the cheapest computer? How much cheaper was it?
Best Buy. It is about $13 cheaper
500
If the input in a linear equation are 2, 3, 4 and the output for 2 is 7, and for 3 is 10, and for 4 is 13. What would the output be if the input was 9
28
The rule is
y = 3x+1
if you put in 9 for x then you get 3(9) +1 = 28
500
Jason has a wooden cube with a length of 2m, Nick has a rectangular prism with the measurements L=5, W=4, H=8 how many of Jason's cubes would fit in Nick's prism?
20 cubes
Volume= L * W* H
For a cube all side lengths are the same so
Volume = 2* 2*2=8cm
Volume of the Prism= 5 * 4* 8=160cm
8cm goes into 160cm 20 times
500
What is the ratio of composite numbers to square numbers from 1- 30?
19::5
Composite number is a number that has more than two factors.
Ex: 1,2,3 are not composite
4,6,8,9 are examples composite
500
A bag of potatoes cost $5.00
A bunch of 6 bananas cost $3.00
10 apples cost $2.50
How much money does Paul need if he wants to buy 2 bags of potatoes, 2 bananas, and 25 apples?