Question

A 48 inch by 36 inch poster is reduced to an image that is 8 inch by 6 inch in size to be used for a flyer. What is the scale factor?

A. 3/2
B. 1/6
C. 1/8
D. 6

Given that measure of arc AF = 100º, arc = BD = 154º and arc AD = 40º.

What is the measure of ∠ AED?

A.13
B.53
C.26
D.40


What is DC if AC = 10 cm, BC = 6 cm, and EC = 12 cm?

A.5
B.20
C.12
D.4

Answer 1

A 48 inch by 36 inch poster is reduced to an image that is 8 inch by 6 inch in size to be used for a flyer. What is the scale factor?

48/8 = 6 and 36/6 = 6
so SF = 6

Answer:
D. 6

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Given that measure of arc AF = 100º, arc = BD = 154º and arc AD = 40º.

What is the measure of ∠ AED?

<BED = 1/2(154 + 100) = 127°
<AED = 180° - 127° = 53°

Anwser

B.53
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What is DC if AC = 10 cm, BC = 6 cm, and EC = 12 cm?

Lets DC = x
so
10 * 6 = 12x
60 = 12x
x = 5

Answer:

A.5