5-8
5-8 Exercises
Exercises
KEYWORD: MG7 5-8
KEYWORD: MG7 Parent
GUIDED PRACTICE
Assignment Guide
Find the value of x. Give your answer in simplest radical form.
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Find the values of x and y. Give your answers in simplest radical form.
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p. 358
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Quickly check key concepts.
Exercises: 10, 12, 14, 16, 17, 18
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SEE EXAMPLE
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4. Transportation The two arms of the railroad sign are
perpendicular bisectors of each other. In Pennsylvania,
the lengths marked in red must be 19.5 inches.
What is the distance labeled d? Round to the nearest
tenth of an inch. 27.6 in.
2
p. 357
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SEE EXAMPLE
Homework Quick Check
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x = 21; y = 14 √
3
8. Entertainment Regulation billiard balls are
2__14 inches in diameter. The rack used to group
15 billiard balls is in the shape of an equilateral
triangle. What is the approximate height of the
triangle formed by the rack? Round to the
nearest quarter of an inch.
SEE EXAMPLE 4
p. 359
Inclusion In Exercise 15,
some students may find it
easier to solve the equation x √
3 = 2 by multiplying both
sides by √
3 first. So 3x = 2 √
3 , and
3
Ý
2
14 √
Ý
2 √3
____
.
3.
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If you finished Examples 1–4
Basic 9–22, 24–33, 38–46
Average 9–35, 38–46
Advanced 9–46
thus x =
2.
{xÂ
,
If you finished Examples 1–2
Basic 9–12, 17, 19, 22
Average 9–12, 17, 19, 22, 24,
25
Advanced 9–12, 17, 19, 22, 24,
25, 34
1.
--
1
p. 356
SEE EXAMPLE
Assign Guided Practice exercises
as necessary.
9.75 in.
PRACTICE AND PROBLEM SOLVING
Find the value of x. Give your answer in simplest radical form.
Independent Practice
For
See
Exercises Example
9–11
12
13–15
16
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12. Design This tabletop is an isosceles
right triangle. The length of the
front edge of the table is 48 inches.
What is the length w of each side edge?
Round to the nearest tenth of
an inch. 33.9 in.
Extra Practice
Skills Practice p. S13
Application Practice p. S32
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x = 5 √
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