March MATHness

Solving Equations

100

4x = 72

x = 18

200

7k - 14 = 56

k = 10

300

4 - 3m = -37

m = 41/3 = 13.66

400

-2t - 5t - 7 = 49

t = -8

500

40 = 2(10 + 4p) + 2p 

p = 2

Angles

100

The sum of angles in a triangle.

180

200

A triangle has 2 angles that measure 92 and 15. Find the measure of the third angle. 

73

300

Find the value of each trigonometric ratio

Slide #3

C = 20 / 29

400

Find the value of x

Slide #4

x = 22

500

Find the value of x

Slide #5

x = 360

Multiplying Polynomials

100

-5x(4x - 2)

-20x² + 10x

200

Multiply 

(2x + 3)(5x-2) 

10x² + 11x - 6

300

Multiply

(3x + 5)²

9x² + 30x + 25

400

Multiply

(2x - 3)(7x² - 5x + 4)

14x³ - 31x² + 23x - 12

500

Multiply

(2x² + x - 3)(x² - 2x + 5)

2x⁴ - 3x³ + 5x² + 11x - 15

Trigonometric Functions

100

Name the three trigonometric functions used to solve for angles and sides in a right triangle.

Sine

Cosine

Tangent

200

You are trying to find an angle in a triangle. You know the measure of two sides, but not the hypotenuse. What trigonometric function are you using to solve?

Tan = opposite / adjacent

300

You are given the triangle ABC. Side c = 7 and the  hyp = 9. What trigonometric function are you using to solve for angle B. 

Cosine = adjacent / hypotenuse 

400

Slide #6

x = 5.4

500

Slide #7

x = 53.6

Math Riddles

100

If you multiply me by any number, the answer will be the same as the answer if you multiplied me by any other number. What number am I? 

Zero

200

If a dozen eggs cost $0.12, how many can you buy for a dollar?

100 eggs

300

How can you add eight 8's to get to the number 1,000? (only use addition).

888 + 88 + 8 + 8 + 8 = 1,000

400

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

51 and 15

42 and 24 

60 and 06

500

I will be everything if you put me on my side, I will be nothing if you cut me in half. What am I?

The number 8