1 / 15

Mastering Formulas for Practical Applications

Understand and apply formulas in various fields, from basic geometry to finance calculations. Learn how to input values, simplify expressions, and solve problems using common formulas. No need to memorize; focus on application.

ebogart
Download Presentation

Mastering Formulas for Practical Applications

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Formulas

  2. Formulas • Formulas appear in almost any profession. • A formula is an expression where the variables and result have a specific meaning. • In the formula P=2w+2l the w and l are measurements and the result, P, is the perimeter of a rectangle.

  3. Steps: • Copy the pattern the formula makes. • Insert the known numbers for the variables. • Simplify.

  4. Formulas • You don’t need to memorize these formulas. • In fact you may not even need to understand what the formula means. • You do need to be able to put the values in the proper place and simplify.

  5. Formula A=lw • Where w is width and l is length • Example: A=(7)(3) • =21 in2.

  6. A= ½ h(b1+b2) • where h is the perpendicular height between the bases and b1 and b2 are the bases. • A= ½ (4)(4+10)=28 in2.

  7. V=4/3πr3 • where r is radius and π is pi. • Example: • radius 3 mi • V=4/3π(3)3=36 π • =113.9mi3.

  8. SA= πr2+πrs • where r is radius, π is pi, and s is the length of the slant of the cone. • Example: • SA= π(5)2+π(5)(13) • = 90π • 282.74

  9. I=Prt • where I is interest, P is the principal, r is the annual rate, and t is the time in years. • A car is sold for $15000 with simple interest at 12% for a period of 5 years. How much interest is paid? How much total is paid back? What is the monthly payment? • I=Prt=(15000)(.12)(5)=$9000 (Write 12% as a decimal.) • Total = 15000+9000=$24000 (Add the principle to the interest.) • Monthly Pmt. = 240000/12=$400 • (Divide the total by the number of months.)

  10. Celsius to Fahrenheit • What is 80C in Fahrenheit?

  11. Fahrenheit to Celsius • What is 80F in Celsius?

  12. Mean or average • Where n is the number of numbers to be averaged and x1, x2, x3 and so on are the numbers to be averaged. • Janet got a 458, 500, 482, 440, and 500 on her GED tests. What was her average score? A=476

  13. Distance • where d is the distance between two points (x1. y1) and (x2, y2). • Find the distance between (-2, -3) and (8,3).

  14. Quadratic Formula • The solution for an equation • 0=ax2 + bx + c the solution is • I know big and hairy.

  15. What are the solutions for: • 0=2x2-9x+10 a =2, b=-9 and c=10

More Related