Random Math 1
What is the definition of obtuse?
an obtuse angle measures more than 90° but less than 180°
Pythagorean Theorem =
a^2 + b^2 = c^2
Volume of Prism =
BH (B = area of the base)
527 / 8 =
65.875
If an equilateral triangle side lengths double, the perimeter ...
doubles
What is the square root closest to 8290?
91
rectangle area =
LW
Trapezoids and squares are both
4-sided polygons / quadrilaterals
2557 x 843 =
2155551
Check division of 1.68 ÷ 1.4 = 1.2
Answer: 1.2 x 1.4
a/b = c/d so ...
ad = bc
trapezoid area =
1/2 x (b1 + b2)h
Cylinder volume question
Diameter = 10 cm, Height = 6 cm
Radius = 10 ÷ 2 = 5 cm
V = π(5²)(6), V = 150π, 150 × 3.14 = 471
Cone volume
V = 1/3 pi*r^2*h
Remember: when dividing, if you have a remainder, it will be a ...
fraction: remainder / divisor
Slope: rise over run =
(y2 - y1)/(x2 - x1)
If trapezoid height doubles …
area doubles
8 dogs eat 12 steaks in 4 days. How many steaks can 4 dogs eat in 2 days?
8 dogs × 4 days = 32 dog-days
12 steaks ÷ 32 = 3/8 steak per dog-day
4 dogs × 2 days = 8 dog-days
Answer: 8 × 3/8 = 3
Cone surface area
SA = pi*r^2 + pi*r*l
Cylinder volume
V = pi*r^2*h
Triangle Area =
BH/2
Area of a circle
pi x r^2
What is the prime factorization simplification for 104
Answer: 2^3 x 13
Cylinder surface area
SA = 2*pi*r^2 + 2*pi*r*h
Lily only - Studying Time Question: shows five names in a chart, how long each student studied, and their score on an assessment. You can set up a line graph to double check, but the only answer choice that made sense is
“girls spent more time studying”