Algebra/ Geometry 1A

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Algebra/ Geometry 1A

• Welcome Back!

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• New Students
• Announcements
• 1. Calculators
• 2. Grading
• 3. What the heck is a Math Battle?

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Review of Semester 1

• Answer the following problems on your own.
• Find the perimeter of a rectangle with sides of
  10 cm and 13 cm.
• -14 7
• What would be an apporpriate unit to find the
  weight of a sock full of quarters, milligrams or
  kilograms?
• 14 (36 21) 32
• Find the solution, 73
• 4 yds., 3 ft., 5 in.
• 2 yds., 1 ft., 9 in.

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Algebra/ Geometry 1A

• Chapter 5 Equations and inequalities
• Are You Ready? Turn to page 206 in your text
  book.
• The distribute property What is it, why do we
  use it, what is the meaning of life?
• That is the meaning of life- Chicago Bears Super
  Bowl Champions Baby! (maybe next year ? )

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Algebra/ Geometry 1A

• Announcements
• The Boys basketball teams have some tough games
  lined up with Sandwich on Friday, and Newark on
  Tuesday. Come out and support the boys team.
• The girls varsity team has the conference
  tournament at Seneca coming up.

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Section 5.2 Review

• Last time you learned a couple of catchy
  phrases to help with algebra. What were they?
• You have one goal in life and that is to get x
  by itself.
• Plug and Chug Baby!

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Section 5.2 Review

• So why do we use those sayings?

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• In an effort to slay dwarf uprisings?
• Probably not

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• To defend the world against Killer Tomatoes?
• Probably not

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Section 5.2 Review

• To solve basic equations, like this one
• X 4 -5
• Its kind of a tricky problem involving negatives
  and subtraction, everybodys favorites.

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Section 5.2 Review

• X 4 -5
• First number on goal in life, get x by itself.
  So ask yourself

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Ask yourself punk, Do I feel lucky? Go ahead,
make my day! If you dont master this algebra
stuff Id love nothing more than to give you the
five knuckle shuffle upside your head punk!
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X 4 -5

• No, ask yourself, how can I get x by itself?
  What is on the same side of the equal sign that
  has x in it?
• I see a, 4 so we need to do the opposite of
  subtract 4, which is?
• Add 4 to both sides

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X 4 -5

• Remember like President Bush, Algebra is an equal
  opportunity pimp! So then, add 4 to both sides.

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X 4 -5

• After adding 4 to both sides, we should have
• X 4 -5
• 4 4
• So then, x -1
• Not so fast, are you finished?

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X 4 -5

• Not so fast dude,
• You have to Plug and
• Chug, check your work.
• Plug your answer back into the original equation
  for x to see if it correct.

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Section 5.2 Quiz

• Solve for the indicated variable.
• X 6 9
• X 4 -3
• X 17 -20
• 3 x 4
• 7 x 1
• -1.3 x 2.4
• X 4 9

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Section 5.3

• In lesson 5.3, we are still solving one step
  equations, just using multiplication and
  division.
• You still have one goal in life, which is?

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Section 5.3

• Which hopefully is not to be like that guy

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Section 5.3

• You have to get x by itself you mopes!
• So, in the equation 4x 40 to undo 4 times x, do
  the opposite, divide 40 by 4.
• 4x 40
• 4 4
• So, x 10

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4x 40

• Remember to Plug and Chug, plug 10 back in for x,
  does 4 times 10 40?
• Yes, all day.

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Section 5.3

• It works the same way for division, just do the
  opposite.
• If it is multiply, you divide.
• If it is divide, you muliply.
• If it is lambchop, then it is

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Section 5.3

• Then its tuna fish

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Section 5.3

• And remember if you think this is too hard for
  you to do, well then

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Section 5.3

• Try these on your own
• 1. 228 4x
• 2. 6k 12
• 3. 5h 25
• 4. x/6 6

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Section 5.3

• Your homework assignment is
• Page 220 section 5.3 problems 16 - 36

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Algebra Geometry 1A

• Announcements
• Section 5.4 Worksheet due, if you have questions,
  have them ready.
• Today we are discussing like terms and combining
  like terms when solving equations.
• And in case you were sleeping in a cave on
  Sunday, you missed this

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• Head coach Lovie Smith of the Chicago Bears
  receives a shower from Adewale Ogunleye in the
  final minute of their 39-14 win against the New
  Orleans Saints in the NFC Championship Game at
  Soldier Field in Chicago.

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You also missed this

• Cedric Benson destroying a weak Saints linebacker.

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And you missed this

• Save the drama for yo momma you punk!

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You also missed this
I knew Mr. Stecken was a genious predicting the
Bears to win. Now I will proclaim my allegiance
to him, like my Bears, he truly is awesome!
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Mr. Stecken you are my hero, I cant help it, I
am amazed at your ability to know that the Bears
would annhilate the weak Nancy- like Saints. Oh
by the way, we are headed to the Super Bowl! Go
eat some Chicken wings!
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Why did I listen to Jake Crouse, now my life is
over, I need to return this New Orleans Saints
leather coat. I am such a loser. Mr. Stecken
you truly are awesome.
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Section 5.5

• Ok, enough, time to get down to business.
• Section 5.5 is about combining like terms
• Remember

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• When combining like terms, think like Da Coach
  and dont take any crap from no one! Who you
  crapping Jake Crouse? You thought DA BEARS would
  lose to those Nancy boy Saints? Who you crappin?

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Section 5.5

• Like terms have to have two things
• The same variable
• And that variable to the same power
• For example, 4x and 3x are like terms.

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Section 5.5

• 3m 5m can be combined to 8m
• Can 8x and 4y be combined?

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Section 5.5

• Now we can combine terms in an equation to solve
  for a variable.
• 3x 4 1x 2

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Section 5.5

• Now try the practice exercises on page 229 1 - 4

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Section 5.5

• Your homework assignment is on page 230 16 44
  evens only.

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Math Battle

• Event 1
• Check your homework answers for the following
  problems and write the answer on a separate sheet
  of paper 18, 24, 32, and 34.

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Math Battle

• Event 2
• Solve the following equations
• 4x -7 -15
• 3(x 2) -12
• 4x 5 2x 23

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Math Battle

• Event 3
• Add the following pictures together to solve the
  mystery of Steckens random riddle

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Math Battle

• Picture 1

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Math Battle

• Picture 2

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Math Battle

• Picture 3

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Math Battle

• 62 To 42

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Algebra Geometry 1A

• Section 5.6 Working with formulas
• Announcements
• Today you will be taking your knowledge of
  equations to the next level, working with
  formulas.
• After you complete this sections notes and
  homework you will be taking a chapter 5 practice
  test that is worth 45 points (1/2 of a test) so
  do a good job.

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Section 5.6

• Using formulas to solve problems.
• What is a formula?
• A formula is an equation stating the relationship
  between 2 or more variables.
• For example, the formula for the area of a
  rectangle is A LW
• Where
• A Area of the rectangle
• L length
• W width

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Section 5.6

• We can use formulas to solve for unknown
  measurements.
• In the formula for a rectangle (A LW), if a
  rectangle has an area of 45 and the length is 9,
  what is the width?
• To solve this problem we will use the formula A
  LW and substitute the values that we know, so 45
  9w is our new equation.

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Section 5.6

• 45 9w
• To solve for the width (w) get it by itself,
  divide out the 9
• 45 9 5
• So w 5, the width of the rectangle is 5.

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Section 5.6

• We can also use formulas to solve distance using
  the distance formula, drt, where d is distance,
  r is rate of speed, and t is time.
• So for example, if Pourchot and Billy were
  picking up chicks in Morris in the 1983 Plymouth
  Voyager mini van and they were going 60 miles per
  hour and drove for 5 hours, how far did they
  travel?
• D rt
• D 60 5
• D 300 miles

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Section 5.6

• We can also solve for variables when there are
  multiple variables.
• In the formula fma for force, solve for m.
• To do this, we must get m by itself, so we need
  to send a to the other side of the equal sign
  (remember when sending something to the other
  side of the equal sign you do the opposite).
• So we need to divide out the a from both sides.
• So, f a m

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Section 5.6

• On your homework assignment, problem 3, you have
  to get w by itself. To do this in the formula A
  LW, you have to divide out the L, so your
  answer is A L W
• On your homework assignment, problem 7, 9a C,
  solve for a. To get a by itself, you have to
  divide out the 9, so your answer would be a C 9

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Section 5.6

• Your homework assignment is from section 5.6,
  pages 234-235, problems 1-8,20,22,26
• After you finish your homework you can begin the
  chapter 5 practice test. Remember that the test
  is worth 45 points. I also want you to show all
  work on a separate piece of paper and staple that
  to the back of the test.