math formula sheet - i-pathways x math formula sheet algebra y y slope of a line: m = 2− 1 x 2−...

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Math Formula Sheet = = + + 2 © 2015 ICCB and CAIT i-pathways.org The GED ® Mark is a registered trademark of the American Council on Education. 1 You will have access to a formula sheet on your High School Equivalency Exam. However, even with the formula tip sheet, you will still need to know how and when to apply a formula. Notes: • π ≈ 3.14 • p = perimeter of base with area B • I = interest, P = principal, r = rate, and t = time Area: A Square: = s 2 1 Triangle: A = bh 2 Rectangle: A = lw 1 Trapezoid: A = h(b 2 1 + b 2 ) Parallelogram: A = bh Circle: A = π r 2 Perimeter: Square: P 4 s Triangle: P s 1 s 2 s 3 Rectangle: P = 2l + 2w Circumference of a circle: C = 2π r OR C = π d Surface Area: Rectangular / right prism: SA = ph + 2 B Cone: SA = π rs + π r 2 Cylinder: SA = 2π rh + 2π r 2 Sphere: SA = 4π r 2 1 Pyramid: SA = ps + B Volume: Rectangular / right prism: V = Bh 1 Cone: V = π r 2 h 3 Cylinder: V = π r 2 h 4 Sphere: V = π r 3 3 1 Pyramid: V = Bh 3

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Page 1: Math Formula Sheet - i-Pathways x Math Formula Sheet Algebra y y Slope of a line: m = 2− 1 x 2− x 1 Pythagorean theorem: a 2 + b 2 = c 2 Slope-intercept for of the equation of

Math Formula Sheet

= = + +

2

copy 2015 ICCB and CAIT i-pathwaysorg The GEDreg Mark is a registered trademark of the American Council on Education

1

You will have access to a formula sheet on your High School Equivalency Exam However even with the formula tip sheet you will still need to know how and when to apply a formula Notes

bull π asymp 314 bull p = perimeter of base with area B bull I = interest P = principal r = rate and t = time

Area

A Square = s2 1

Triangle A = bh 2

Rectangle A = lw 1

Trapezoid A = h(b 2 1 + b2 )

Parallelogram A = bh Circle A = πr2

Perimeter

Square P 4s Triangle P s1 s2 s3

Rectangle P = 2l + 2w Circumference of a circle C = 2πr OR C = πd

Surface Area

Rectangular right prism SA = ph + 2B Cone SA = πrs + πr2

Cylinder SA = 2πrh + 2πr2 Sphere SA = 4πr2

1 Pyramid SA = ps + B

Volume

Rectangular right prism V = Bh 1

Cone V = πr2h 3

Cylinder V = πr2h 4 Sphere V = πr3 3

1 Pyramid V = Bh

3

Math Formula Sheet

Algebra

y ySlope of a line m = 2minus 1

x2minus x1

Pythagorean theorem a2 + b2 = c2

Slope-intercept for of the equation of a line y mx b = + Simple interest I = Pr t

Point-slope form of the equation of a line y minus y1 = m(x minus x1 )

Distance Formula d = rt

Standard form of a quadratic equation y = ax2 + bx + c Total Cost (number of units)x ( price per unit)

minusb plusmn b2 minus 4ac Quadratic Formula x =

2a

Mean The mean is equal to the total of the values of a data set divided by the number of elements in the data set Median Median is the middle value in an odd number of ordered values of a data set or the mean of the two middle values in an even number of ordered values in a data set

copy 2015 ICCB and CAIT i-pathwaysorg The GEDreg Mark is a registered trademark of the American Council on Education

2

Page 2: Math Formula Sheet - i-Pathways x Math Formula Sheet Algebra y y Slope of a line: m = 2− 1 x 2− x 1 Pythagorean theorem: a 2 + b 2 = c 2 Slope-intercept for of the equation of

Math Formula Sheet

Algebra

y ySlope of a line m = 2minus 1

x2minus x1

Pythagorean theorem a2 + b2 = c2

Slope-intercept for of the equation of a line y mx b = + Simple interest I = Pr t

Point-slope form of the equation of a line y minus y1 = m(x minus x1 )

Distance Formula d = rt

Standard form of a quadratic equation y = ax2 + bx + c Total Cost (number of units)x ( price per unit)

minusb plusmn b2 minus 4ac Quadratic Formula x =

2a

Mean The mean is equal to the total of the values of a data set divided by the number of elements in the data set Median Median is the middle value in an odd number of ordered values of a data set or the mean of the two middle values in an even number of ordered values in a data set

copy 2015 ICCB and CAIT i-pathwaysorg The GEDreg Mark is a registered trademark of the American Council on Education

2

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