Splash Screen. Lesson Menu Objectives Vocabulary Example 1 Example 2 Quick Quiz.
Splash Screen. Lesson Menu Five-Minute Check (over Chapter 9) Then/Now New Vocabulary Key Concept:...
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Transcript of Splash Screen. Lesson Menu Five-Minute Check (over Chapter 9) Then/Now New Vocabulary Key Concept:...
![Page 1: Splash Screen. Lesson Menu Five-Minute Check (over Chapter 9) Then/Now New Vocabulary Key Concept: Square Root Example 1: Find Square Roots Example 2:](https://reader036.fdocuments.us/reader036/viewer/2022062511/551574ca55034685568b6251/html5/thumbnails/1.jpg)
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Five-Minute Check (over Chapter 9)
Then/Now
New Vocabulary
Key Concept: Square Root
Example 1: Find Square Roots
Example 2: Estimate Square Roots
Example 3: Use a Calculator to Estimate a Square Root
Example 4: Use a Calculator to Estimate a Negative Square Root
Example 5: Real World Example: Use Square Roots to Solve Problems
![Page 3: Splash Screen. Lesson Menu Five-Minute Check (over Chapter 9) Then/Now New Vocabulary Key Concept: Square Root Example 1: Find Square Roots Example 2:](https://reader036.fdocuments.us/reader036/viewer/2022062511/551574ca55034685568b6251/html5/thumbnails/3.jpg)
Over Chapter 9
A. 10a2b3
B. 52a2b3
C. 10ab5
D. 5ab5
Write 5 ● 5 ● a ● a ● b ● b ● b using exponents.
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Over Chapter 9
A. 2xy
B. 4xy
C. 4(xy)4
D. (xy)4
Write x ● y ● x ● y ● x ● y ● x ● y using exponents.
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Over Chapter 9
A. 320
B. 310
C. 39
D. 920
Find 35 ● 34. Express using positive exponents.
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Over Chapter 9
A. –35a5
B. –12a6
C. –12a5
D. 35a5
Find (5a2) (–7a3). Express using positive exponents.
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Over Chapter 9
A.
B.
C.
D.
Express using positive exponents
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Over Chapter 9
A. y = 3x3
B. y = 3x2 + 2x – 2
C. y = 3x – 2
D. y = 3x
Which of the following equations represents the graph shown?
![Page 9: Splash Screen. Lesson Menu Five-Minute Check (over Chapter 9) Then/Now New Vocabulary Key Concept: Square Root Example 1: Find Square Roots Example 2:](https://reader036.fdocuments.us/reader036/viewer/2022062511/551574ca55034685568b6251/html5/thumbnails/9.jpg)
You have already evaluated expressions containing squares of numbers. (Lesson 8–1)
• Find square roots.
• Estimate square roots.
![Page 10: Splash Screen. Lesson Menu Five-Minute Check (over Chapter 9) Then/Now New Vocabulary Key Concept: Square Root Example 1: Find Square Roots Example 2:](https://reader036.fdocuments.us/reader036/viewer/2022062511/551574ca55034685568b6251/html5/thumbnails/10.jpg)
• perfect square
• square root
• radical sign
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Find Square Roots
Answer: 8
A.
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Find Square Roots
Answer: –11
B.
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Find Square Roots
Answer: +16 and –16
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Find Square Roots
Answer: There is no square root because no number times itself is equal to –9.
D.
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A. 624
B. 12.5
C. 5
D. –5
A.
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A. 12
B. –12
C. –72
D. –20,736
B.
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A. 4
B. –4
C. 4 and –4
D. 256 and –256
C.
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Example 1 CYP D
A. –8
B. 8
C. –32
D. There is no real square root.
D.
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Estimate Square Roots
Answer: 5
A.
The first perfect square less than 22 is 16.
The first perfect square greater than 22 is 25.
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B.
Estimate Square Roots
Answer: –18
The first perfect square less than 319 is 289.
The first perfect square greater than 319 is 324.
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A. 6
B. 7
C. 8
D. 9
A.
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A. –6
B. –7
C. 6
D. 7
B.
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Use a Calculator to Estimate a Square Root
Use a calculator.
Round to the nearest tenth.
Check for Reasonableness Since 82 = 64, the answer is reasonable.
ENTER2nd 57 7.549834435
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A. 3.9
B. 9.8
C. 38.5
D. There is no real square root.
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Use a Calculator to Estimate a Negative Square Root
Use a calculator.
Round to the nearest tenth.
Check for Reasonableness Since 72 = 49, the answer is reasonable.
ENTER2nd 42 6.480740698
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A. –8.5
B. –36.0
C. 8.5
D. There is no real square root.
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Use Square Roots to Solve Problems
SKYSCRAPER The tallest building in Houston, Texas, is the JP Morgan Chase Tower, standing at 1002 feet. About how far to the horizon can a person standing on the top floor see? Round your answer to the nearest tenth.
Replace h with 1002.
Evaluate the square root first.
Write the formula.
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Use Square Roots to Solve Problems
≈ 38.6 Multiply.
Answer: On a clear day, a person could see about 38.6 miles.
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A. 23.2 miles
B. 23.3 miles
C. 23.7 miles
D. 24.4 miles
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