# Percentages, Interest and Triangles

Please see the attached file for the fully formatted problems.

Ch6-1 Provide the following:

a. Write 40% as a decimal.

b. Write 0.21 as a percent. a. ___________

b. ___________

2 If $7,800 is deposited into an account paying 6% interest compounded annually (at the end of each year), how much money is in the account after 2 years?

A) $7,332.00 B) $8,764.08 C) $8,268.00 D) $9,289.92 A___, B____, C____ ,D____

*Show work here:

3 Write as a fraction or a mixed number.

4 1,155 is what percent of 210?

*Show work here-

5 The electricity costs of a business increased from $18,000 one year to $19,000 the next. To the nearest whole percent, what was the rate of increase? *Show work here:

6 What percent of 400 is 320?

7 Rewrite the statement, using percent notation. Of 50 houses in a development, 25 are sold.

8 An appliance dealer marks up refrigerators 20% (based on cost). If the cost of one model is $500, what should its selling price be? *Show work here:

Ch 7-9 Find the missing length of the right triangle.

*Show work here:

10 Is between

A) 5 and 6? B) 7 and 8? C) 4 and 5? D) 6 and 7? A___, B____, C____ ,D____

11 Find the missing angle.

A) B) C) D)

A___, B____, C____ ,D____

Explain your choice.

12 Is the following set of numbers a perfect triple? 13, 15, 18 yes___ no____

13

Find the supplement of

14 Complete the statement.

= ________ L

A) 350 B) 35 C) 3.5 D) 3,500 A___, B____, C____ ,D____

15 A triangle has base 13 feet (ft) & an altitude of 6 ft. Find its area.

16 Define these triangles:

a. equilateral

b. isosceles

c. scalene a. equilateral

b. isosceles

c. scalene

17 Is the object a line or a line segment?

18 Simplify. 10 lb 28 oz

19 Which two triangles are similar? See below _______________

Explain your choice:

20 Find the following:

a. (square root of 25).

b. the complement of

a.

b.

For additional show of work:

15. A triangle has base 13 feet (ft) & an altitude of 6 ft. Find its area. (Show work here)

#### Solution Summary

A range of questions consisting of the above topics. Please see below for fully formatted questions :)

All solutions are provided with workings.