Today:

Prepare for Test Tomorrow Prepare for Test Tomorrow Prepare for Test Tomorrow Prepare for Test Tomorrow

November 23, 2015

News & Notes1. Test #2 will be tomorrow. A calculator is recommended, but not absolutely necessary, (If you like doing long division).2. The test will focus primarily on literal

equations, but will also include: a. Additive & Multiplicative Inverses b. Factoring c. Distance and/or area/perimeter problems

News & Notes3. Amnesty week at the Khan Academy.

You have until the 29th to complete any topics that you have missed for the three weeks in the 2nd quarter. After the 29th, I will not be checking those topics again for mastery.4. Please do yourself a favor and do not take the test tomorrow lightly. Ask questions if you are not sure!!

Warm-Up: 15

problems

5. There is no class work today, but we are going to work some problems, so get comfortable and practice each and every one.

Solving Equations in Terms of a Variable

-10 + 7 – 3-10 – 4 + 2

Before we begin, let’s determine one more truth about numbers:

−𝟔−𝟏𝟐=¿

𝟏𝟐

Now, what if we make the -10’s positive and leave

the rest:𝟏𝟎+𝟕−𝟑𝟏𝟎−𝟒+𝟐=¿𝟏𝟒

𝟖 =𝟕𝟒

Finally, let’s change every sign.

𝟏𝟎−𝟕+𝟑𝟏𝟎+𝟒−𝟐=¿𝟔𝟏𝟐=¿𝟏𝟐

Moral of the story: If you change one sign, you’ve got to change them all.

Simplify:

Solving Equations in Terms of a Variable

𝒍=𝟐𝒎−𝟐𝟏𝒏𝟔𝟔

Solving Equations in Terms of a Variable

Solve for x:

= + c

What is the LCD?

Solve 3(a + x) – b = d - 4cx for x. x =

Solve for x:

Solve for b:A = h(b + c)

2

The formula for the volume of a pyramid is V = Which equation solves the formula for h?

𝟏𝟑 𝒃𝒉

1. h = 3Vb

2.

h 3bV

h 3Vb

h V3b

𝟑 .

𝟒 .

Last Literal Equation

Write the decimal form of the reciprocal of -3

Additive & Multiplicative Inverses

-0.3

Five times the reciprocal of a number minus 9 is twice the opposite of negative three.

x = Simplify the Reciprocal : 6.3

0𝟏𝟎𝟔𝟑

Two numbers have different signs but are the same distance from zero. These numbers are called___________

5x3 – 10x2 – 15xFactoring:

Simplify : -2

2pq2 – 21p + 15q

Other:If you drive 180 miles in 2 ½ hours, what is your average speed?

R = 180/2.5 = 72 mph

𝟓𝟏𝟐𝟔

3. Simplify: 27x3y2 _9xy 3xy

+¿

𝒚=−𝟐 𝒙 −𝟑

𝟔𝒚=− 𝟐 𝒙+𝟑

𝟔

or