Math TSI formulas + Extra thing you need to
remember || A+ ACCURACY!!
The formula for the Midpoint? correct answers M= (x1+x2/2, y1+y2/2)
What is the formula for % change? correct answers (Amount of change / Original amount) X
100
The formula for distance? correct answers distance = speed x time; d=s*t
What is the formula for circumference? correct answers C=2πr or C=πd
What is the Formula for Speed? correct answers speed = distance/time or S=dt
What kind of slope does a perpendicular line have? correct answers Opposite reciprocal
How do you find the percentage of something? correct answers You change the percent into a
decimal and you multiply it by the number (and make sure to add the decimal based on how
many numbers are past the decimal)
When you have an equation like: 5= 1/4S , and you need to solve for S, what do you do?
correct answers Multiply the entire equation by the denominator to isolate the numerator so it
looks like: 4(5)= (1/4S)4, and ends as: 20= S [or just divide but this saves time]
How do you find the area of a circle? correct answers Area = πr2 [that's squared btw]
What is the formula for interest? correct answers I = PRT
Interest = Principle x Rate x Time
How to find the original sales price with the amount bought, the final profit, and the price he
sold it at. correct answers 1. Divide the final profit from the amount bought to find the profit
for each sale
2. Then subtract the number you got from the price he sold it at
and BAM done
What is point slope form? correct answers y - y₁ = m (x - x₁)
How do you find the perimeter of a triangle? correct answers Add up all the sides of the
triangle.
How do you find the area of a triangle? correct answers A = ½ bh (Area= ½ base*height)
On a 60, 30, 90 triangle, what is the equation for the hypotenuse? correct answers
h=2(shortest leg)
On a 60, 30, 90 triangle, what is the equation for the longer leg? correct answers Longest
Leg= √3 (shortest leg)
What is the standard form for Quadratic Equations correct answers y= a (x^2) + bx + c
remember || A+ ACCURACY!!
The formula for the Midpoint? correct answers M= (x1+x2/2, y1+y2/2)
What is the formula for % change? correct answers (Amount of change / Original amount) X
100
The formula for distance? correct answers distance = speed x time; d=s*t
What is the formula for circumference? correct answers C=2πr or C=πd
What is the Formula for Speed? correct answers speed = distance/time or S=dt
What kind of slope does a perpendicular line have? correct answers Opposite reciprocal
How do you find the percentage of something? correct answers You change the percent into a
decimal and you multiply it by the number (and make sure to add the decimal based on how
many numbers are past the decimal)
When you have an equation like: 5= 1/4S , and you need to solve for S, what do you do?
correct answers Multiply the entire equation by the denominator to isolate the numerator so it
looks like: 4(5)= (1/4S)4, and ends as: 20= S [or just divide but this saves time]
How do you find the area of a circle? correct answers Area = πr2 [that's squared btw]
What is the formula for interest? correct answers I = PRT
Interest = Principle x Rate x Time
How to find the original sales price with the amount bought, the final profit, and the price he
sold it at. correct answers 1. Divide the final profit from the amount bought to find the profit
for each sale
2. Then subtract the number you got from the price he sold it at
and BAM done
What is point slope form? correct answers y - y₁ = m (x - x₁)
How do you find the perimeter of a triangle? correct answers Add up all the sides of the
triangle.
How do you find the area of a triangle? correct answers A = ½ bh (Area= ½ base*height)
On a 60, 30, 90 triangle, what is the equation for the hypotenuse? correct answers
h=2(shortest leg)
On a 60, 30, 90 triangle, what is the equation for the longer leg? correct answers Longest
Leg= √3 (shortest leg)
What is the standard form for Quadratic Equations correct answers y= a (x^2) + bx + c
