Stormtroopers
2.1 Adding and Subtracting Fractions and Decimals
1/2+0.78
1.28
2.3 Perimeter and Area of Regular Polygons
Perimeter or a heptagon whose sides measure 4 m.
28 m
2.4 Direct Variation
y and x vary directly, if the constant of variation (k) is 5, find the value of y when x=-4.
y=kx=(5)(-4)=-20
2.5 Multiplying decimals
3.2x1.7
5.44
2.6 Dividing decimals
20.4/2.5
8.16
2.10 Frequency tables
If the frequency of scores between 80 and 89 is 2, and the total exams I graded were 18, what is the relative frequency of this class?
1/9
2.2 Multiplying and Dividing Fractions
3/4*1/2
3/8
2.2 Multiplying and Dividing Fractions
7/8 / 2/3
21/16
2.7 One step and Two step equations
x+15=23
x=8
2.6 Dividing decimals
45.5/7
6.5
2.7 One step and Two step equations
7x-12=2
x=2
2.11 Integers
8*-4
-32
2.3 Perimeter and Area of Regular Polygons
Area of a pentagon whose sides measure 2 m with an apothem of 1 m.
5 m2
2.1 Adding and Subtracting Fractions and Decimals
1/6-0.1
1/6-1/10=5/30-3/30=2/30=1/15
2.11 Integers
25-(4)2/2*2
9
2.8 Perimeter and Area of Triangles and Quadrilaterals
Perimeter of a square whose sides measure 7 m.
49 m
2.8 Perimeter and Area of Triangles and Quadrilaterals
Area of a triangle whose base=4 m and whose height=3 m
6 m2
2.12 Circumference and Area of a Circle
Circumference of a circle with a diameter of 20 m.
62.8 m
2.4 Direct Variation
y and x vary directly, if x=-2 and y=-6, find the constant of variation (k).
k=y/x=-6/-2=3
2.14 Inverse Variation
Y and x vary inversely, if the constant of variation (k) is 40 when x=8, what will be the value of y?
y=k/x=40/8=5
2.9 Theoretical Probability
What is the probability of getting an even number when I toss a die?
1/2
2.9 Theoretical Probability
If I have a drawer with 4 pairs of black socks and 5 pairs of blue socks, what is the probability that if I pick a random pair of socks it is blue?
5/9
2.12 Circumference and Area of a Circle
Area of a circle with a radius of 4 m.
50.24 m2
2.13 Proportions
Two dogs eat 5 cups of dog food every day, if I get four new dogs (now I have six dogs), how many cups of dog food will they eat daily?
15 cups of dog food
2.5 Multiplying decimals
2.321x5.567
12.921007