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9.2.6 Pythagorean Theorem in Three Dimensions 9-139. 9-140.

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9.2.6 Pythagorean Theorem in Three Dimensions 9-139. 9-140.
9.2.6 Pythagorean Theorem in Three Dimensions
Homework
9-139. The hypotenuse and one leg of a right triangle are 65 and 60 meters. What is the
length of the third side?
25 m
9-140. Find the missing length on this right triangle.
≈ 29. 17 mm
9-141. Solve these equations for x.
a. (x + 3.5)2 = 16
x = 4.5
b. 23 + 5x = 7 + 2.5x
c. 3x + 4.4 = −(6.6 + x)
x = −6.4
x = −2.75
9-142. Simplify each expression.
b. 10x4(10x)−2
a.
x2/10
9-143. Complete the table.
a. Find the rule.
y = −x +2
b. What is the slope? -1
c. ( )3 · (4)2
d.
x2
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