Chapter 11 Probability and Statistics

Get Ready!

Skills Handbook, page 964 Finding Percent

Write each number as a percent.

1. 5 6 5 sixths
2. 7 36 7 thirty sixths
3. 48 52 48 over 52
4. 0.3056

Skills Handbook, page 967 Simplifying Expressions

Simplify each expression.

5. 8 · 7 · 6 · 5 · 4 8 middle dot 7 middle dot 6 middle dot 5 middle dot 4
6. 52 ⋅ 51 ⋅ 50 3 ⋅ 2 ⋅ 1 fraction 52 dot 51 dot 50 , over 3 dot 2 dot 1 end fraction
7. 5 ⋅ 4 ⋅ 3 ⋅ 2 ⋅ 1 3 ⋅ 2 ⋅ 1 ⋅ 2 ⋅ 1 fraction 5 dot 4 dot 3 dot 2 dot 1 , over 3 dot 2 dot 1 dot 2 dot 1 end fraction

Lesson 5-7 Expanding Binomials

Use Pascal's Triangle to expand each binomial.

8. ( a + b ) 5 open eh plus b close to the fifth
9. ( j + 3 k ) 3 open j plus 3 k close cubed
10. ( m + 0.7 ) 2 open m plus 0.7 close squared
11. ( 2 + t ) 4 open , 2 plus t , close to the fourth
12. ( m + n ) 2 open m plus n close squared
13. ( x + 3 y ) 4 open x plus 3 y close to the fourth

Lesson 6-1 Finding Real Roots

Find the real square roots of each number.

14. 1 100 1 100th
15. 1 400 1 400th
16. 1 196 1 over 196
17. 1 4 1 fourth
18. 1 9 1 ninth
19. 1 576 1 over 576

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