chapter 9 real numbers and right triangles pre algebra
TRANSCRIPT
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Chapter 9 Real Numbers and Right Triangles
Pre Algebra
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Table of Contents
• 9.1- Square Roots• 9.2- Simplifying Square Roots• 9.3- The Pythagorean Theorem• 9.4- The Real Numbers• 9.5- The Distance and Midpoint Formulas• 9.6- Special Right Triangles• 9.7- The Tangent Ratio• 9.8- The Sine and Cosine Ratios
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Pre Algebra (bell work)9.1
1. Define Square root, read the rest
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9.1 Square Roots
Pre Algebra
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9-1
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• A construction worker building a skyscraper accidentally drops a bolt from a height of 500 feet.
• Use the equation d = 16t2 to determine the time t, in seconds, that it takes the bolt to hit the ground below
9.1
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HW pg. 455
• 9.1-– 1, 3-6, 11-24, 45-51 (Odd), 59-62, 70-81 (Odd)
9-1
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Pre Algebra (Bell work)9-2
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9.2 Simplifying Square Roots
Pre Algebra
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Pre Algebra (Bell work)9-2
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HW pg. 460
• 9.2-– Day 1: 1, 3, 4, 9-14, 29-32, 35-41 (Odd)– Day 2: 5-9, 15-26, 46, 47-Ch: 27
9-2
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Pre Algebra (Bell work)
1. Read pg. 462/463 on your own
9.3
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9.3 Pythagorean Theorem
Pre Algebra
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9-3
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9-3 Practice
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Pre Algebra (Bell work)
1. Read the following statement below
9-3
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9-3
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HW pg. 467
• 9.3-– Day 1: 1, 3-12, 37-42, 44– Day 2: 13-21, 32
9-3
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9.4 Real Numbers
Pre Algebra
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Pre Algebra (Bell work)
1. Read the information below and define irrational number and real numbers
9-4
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9-4
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9-4
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9.4 HW
• Pg. 472
• 1: 1, 3-23 (Odd), 32, 33, 35, 45-51 (Odd)
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9.5 The Distance and Midpoint Formulas
Pre Algebra
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Pre Algebra (Bell work)
1. Read the top of pg. 4762. Copy the formula below
9-5
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9-5
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9.5 HW
• Pg. 479
• 1-17 Odd, 19 – 26, 33-38, 43, 44, 56-58,
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Pre Algebra (Bell work)1. Read
2. Copy
9-6
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9.6 Special Right Triangles
Pre Algebra
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9-6
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-Alexa is buying paving stones to lay along a diagonal path across her square lawnWhich is 17 feet on each side. To the nearest tenth of a foot, what is the length of the path?
9-6
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1. Read
2. Copy
9-6
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9-6
(Bell work)1. Copy2. Try on your own
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-The corner shelf in Shawn’s bathroom is a 45°-45°-90° triangle.
The longest edge of the shelf is about 17 inches long.
Find the lengths of the two shorter sides
9-6
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9.6 HW
• Pg. 485
• 1: 1-5, 7-9, 27-29
• 2: 6, 10-19, 22-25
• (TEC) Brain Game pg. 475
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Pre Algebra (Bell work)
1. Read the intro on pg. 4892. Copy the formula below
9-7
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9.7 The Tangent Ratio
Pre Algebra
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9.7 HW
• Pg. 491
• 1-9, 11-17 Odd, 18-21, 23, 28, 32-35• Bonus Brain Game pg. 493
9-7
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Pre Algebra (Bell work)1. Read the intro pg. 494
2. Copy the formulas below
9-8
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9.8 The Sine and Cosine Ratios
Pre Algebra
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S ineO ppositeH yptenuseC osineA djacentH yptenuseT angetO ppositeA djacent
This will helpYou remember your trig values
9-8
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9-8
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9-8
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9-8
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Pre Algebra (Bell work)9-8
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HW 9.8• Pg. 497
• 1: 1-15, 30-35
• 2: 16-22, 24-26, 36-39
• Combined: 1-22, 24-26, 30-39
• Review pg. 500, 10-20, 28-33