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# 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-&#61664;
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____

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 _______________
20 Find the following:
a. (square root of 25).
b. the complement of
a.

b.