# Like this study set? Create a free account to save it.

### Define a rational number.

A number that can be expressed as a ratio or a fraction. As decimals they end (terminated or repeated)

### Find the value of the expression: t-jk if t= - 9, j= - 5, and k= -3.

t-jk

- 9 - -5 X - 3

- 9 - +15

-6

### Translate into algebraic symbols: "Seven more than half a number is negative twelve" DON'T SOLVE!!! :)

(n÷2) +7= -12

### Use the formula for the area of a trapezoid: A= 1/2 h (b₁+b₂) -or- A= ( (b₁+b₂)h ) ÷ 2 Where h is the height and base₁ and base₂ are the bases. If h= 6ft, b₁ =5ft, and b₂ = 9ft, determine the area.

42 ft

###
What is the mean, median, mode and range of the grades:

73, 83, 73, and 90?

Mean- 79.5

Median- 78

Mode- 73

Range- 17

###
The NYPD makes money from the traffic tickets. It is determined that in order to make enough money to support the department, on average, a police officer on duty must give 30 tickets per month. The table below shows the number of tickets given each month. Find the value of x so that the officer can meet his quota.

January- 27

February-34

March-20

April-x

x=39

### The circle graph below shows the popularity of fruits among the students at Woodland Elementary School. Use the graph to determine the percent of the students that enjoy apples.

apples=41%

###
Calculate the sum of the measures of all interior angles in each polygon:

a Quadrilateral

b Heptagon

c Decagon

a 360

b 900

c 1,440

### The measures of two angles of a triangle are 39 and 46. Find the measure of the third angle, then state the type of triangle. You must use two words.

95, obtuse and scalene

### The radius of a circle measures 6in. Use π =3.14159... to calculate it's (a) area and (c) circumference.

C=37.7 in

A=113.0 in²

### A rectangle base pyramid is shown. Use the formula V= (¹/₃)lwh to calculate the volume.

V=23.333....in³

###
Use the laws of exponents to simplify and rewrite each:

a 7⁻²

b 7⁴ X 7⁵

c 2⁻⁷

a one over forty nine

b seven to the ninth power

c one over two to the seventh power

### Define an irrational number

A number that cannot be expressed as a ratio or fraction. As decimals they do not end or repeat.

###
Order the following numers from the least to greatest.

|-2|, 2⁰, -10/5, 3⁻², 0⁵

-Find th evalue of each number.

-Place the numbers in order from least to greatest.

-Graph each number on the line (on the worksheet.

-Show the point and label it with the original number given.

(see worksheet and do it on that) and check with answer key)

### Joanne is making a gift box with the dimensions below. How much fabric will she need to cover the entire surface area of the box.

220 cm