• 1. y – 30 = -10, solve for y. • 2. There are four red marbles and six green

marbles in a bag. What is the probability of pulling a green marble?

• 3. Find the mean of the given set: 5,9,15,15,16

• 4. Given the number 2453.246, what is the sum of the digits in the tenths and tens place?

• 5. Mr. Meeks had $11 in his wallet, $15 in his car, and spent $20 on a shirt. How much money does he have after buying the shirt?

Quiz

• Sit at the table with your name• In your group, work on fixing your quiz• You need to work in your group only. • On a sheet of paper, write down you mistakes

and how to correct them.• Turn in for partial credit added to your quiz.

Solving Literal Equations

December 1/2, 2011

Literal equations

• A literal equation is any equation that has more than one variable.

• Most literal equations are formulas• Standard form is a literal equation• We used literal equations when finding Area,

Volume, Perimeter, Surface area and working backwards.

How to solve a literal equation• A = b + c – h, for c• Step 1 Put a box around the variable• A = b + c – h• Step 2 Write that variable in the box down first• c =• Step 3 Write what is on the other side of the equal

sign• c = A• Step 4 Do the opposite operations of the other

variables and/or numbers• c = A – b + h

Example 2

• 7f + g = 5, for f• 7f + g = 5 Box• f = Write down Box• f = 5 Write down what it is equal to• f = 5 – g Do opposite operation of

leftovers 7

Now you try!

• d = rt, solve for r• x + y = 12, solve for y• A = ½bh, solve for h• V = lwh, solve for w• x + y + z = 12, solve for x

Practice

• Work in your group• You will be assigned 4 problems per group• Everyone must try one problem and be able to

describe one problem• You will need to ask your group to check your

answers• Ms. Dobrin will not check until you are ready

to present