1st 9 weeks replacement grade by: Imani Zaidi

Irrational Numbers

100

which of the following is an irrational number?

3/4, 0.66666667, pi, 233/2

pi

200

which ones are irrational and which ones are rational

square root of 0.15, .33, 2/5

square root of 0.15=irrational

 .33=rational

2/5=rational

300

Is the following number rational or irrational?

-2pi

irrational 

400

is pi/4pi rational?

no, because pi/4pi equals 2.467.... which is irrational

500

 is this irrational? 3(4) +2 /pi

yes, 3(4) +2 /pi equals 12.636...

Exponents

100

  What does 2⁷/2³ equal

2⁴

200

What does 4^-5 equal

1/4⁵ or 1/1024

300

What is (-4)(-4)(-4) in Exponential Notation?

(-4)³

400

Is this statement correct?

3⁴(5⁴) =15⁴

yes

500

How would we write -3² in expanded form?

(-1) (3) (3)

Scientific Notation

100

(11 x10⁴) (7 x10^-2)

7.7 x 10³

200

Put this in Scientific Notation

1200000000

1.2 x10⁷

300

Find the quotient of 1.23 x10⁹ and 2.4 x10⁵

5.125 x10³

400

3 x10⁴ + 2.5 x10⁵

2.8 x10⁵

500

1.2 x10² - 6 x10³

-5.88 x10³

Equations

100

5x-6+2x=3x-4+4x-2

infinite solutions

200

3m-1-m=4m-5

m=2

300

Marco bought a agenda for $3.10 and seven packs of colored pencils. He spent a total of $18.50. Write and equation and solve to find how much each pack of colored pencils cost.

equation- 18.50 - 3.10 / 7=x

Each pack of colored pencils cost $2.20

400

3x-5-2x=7x+1-6x

no solution 

500

8(5x-8) =-28 + 4x

x=1

Slope

100

if your line goes from down to up is the line positive or negative?

positive

200

Find the slope

(3,2) (9,5)

m=1/2

300

Write and equation with a slope of 3 and a y-intercept of -5

y=3x-5

400

Find the y-intercept and the slope

(1,2) (15,11) 

b=7

m=4

500

What is the y-intercept?

x= -2, -1, 0, 1, 2

y= -3, -1, 13, 5, 6

b=13