Term
| The equation for the sum of the interior angles for angy polygon (shape with equal sides) |
|
Definition
|
|
Term
| The equation for the area of a triangle when you know b and h |
|
Definition
|
|
Term
| The equation for the area of a triangle when you know all three sides (would only be useful in situations where you can't tell which is the base and which is the height) |
|
Definition
[image]
p=half of the perimeter |
|
|
Term
| Equation used to find the length of the diagonal of a sqaure |
|
Definition
|
|
Term
| Eqaution of the area of a circle |
|
Definition
|
|
Term
| Equation for the circumference of a circle |
|
Definition
|
|
Term
| Equation to find the volume of a right circle cylinder |
|
Definition
|
|
Term
| External angles are (equal to, less than, or greater than) the two opposite interior angels |
|
Definition
|
|
Term
Andy solves problems 74 to 125 inclusive in a Math exercise. How many problems does he solve? |
|
Definition
52
How to solve:
125 - 74 = 51
51 + 1 =52
|
|
|
Term
| When multiplying exponents with the same base, what do you do to the exponents in order to solve the problem? |
|
Definition
|
|
Term
| The profit from a business is to be divied in the ratio 4 to 5 between X and Y respectively. How much money would X recieve if the total profits are $153? |
|
Definition
$68
How to solve:
To divide into the ratio 4 : 5 , first add the parts of the ratio (4 + 5 =9)
Now divide the money by 9 to get one part of the ratio (153/9 = 17)
To find X’s share multiply by 4 (17 x 4 = 68) |
|
|
Term
| When you have the diagonal of a square, how do you figure out the length of the side? |
|
Definition
(d/√2)^2
or just (d^2)/2
d=diagonal |
|
|
Term
| If k is a positive integer, what is the smallest value for k to make 60k a perfect square? |
|
Definition
Correct Answer: 15
Explanation:
To find a perfect square we need the prime factors.
60 = 2 x 2 x 3 x 5
To turn it into a perfect square we need to multiply by 3 x 5 = 15
(So that the prime factors are in groups of two = 2 x 2 x 3 x 3 x 5 x 5) |
|
|
Term
Column A: 452 + 252
Column B: (45 + 25) 2
Which is greater?
Column A? Column B? Are they the same? Can it not be determined? |
|
Definition
|
|
Term
Column A: 45 (35 + 65)
Column B: 45 * 35 + 45 * 65
Which is greater?
Column A? Column B? Are they the same? Can it not be determined? |
|
Definition
| Both Column A and Column B are the same |
|
|
Term
| The fraction x/y is altered by decreasing x by 25 per cent and increasing y by 25 percent. The new fraction is what percent less than the original? |
|
Definition
Correct Answer: 40
Explanation:
Decreasing x by 25 per cent gives 0.75x
Increasing y by 25 percent gives 1.25y
The new fraction is 0.75x/1.25y = 0.6x/y
This is 0.4 less (= 40 percent) |
|
|
