Lesson 8
Finding Unknown Side Lengths
Problem 1
Find the exact value of each variable that represents a side length in a right triangle.
Solution
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Problem 2
A right triangle has side lengths of \(a\), \(b\), and \(c\) units. The longest side has a length of \(c\) units. Complete each equation to show three relations among \(a\), \(b\), and \(c\).
-
\(c^2=\)
-
\(a^2=\)
-
\(b^2=\)
Solution
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(From Unit 8, Lesson 7.)Problem 3
What is the exact length of each line segment? Explain or show your reasoning. (Each grid square represents 1 square unit.)
a.
b.
c.
Solution
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(From Unit 8, Lesson 7.)Problem 4
In 2015, there were roughly \(1 \times 10^6\) high school football players and \(2 \times 10^3\) professional football players in the United States. About how many times more high school football players are there? Explain how you know.
Solution
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(From Unit 7, Lesson 15.)Problem 5
Evaluate:
- \(\left(\frac{1}{2}\right)^3\)
- \(\left(\frac{1}{2}\right)^{\text-3}\)
Solution
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(From Unit 7, Lesson 6.)Problem 6
Here is a scatter plot of weight vs. age for different Dobermans. The model, represented by \(y = 2.45x + 1.22\), is graphed with the scatter plot. Here, \(x\) represents age in weeks, and \(y\) represents weight in pounds.
- What does the slope mean in this situation?
- Based on this model, how heavy would you expect a newborn Doberman to be?
Solution
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(From Unit 6, Lesson 6.)