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stira [4]
3 years ago
7

If the measure of DAC is x and the measure of CAB is (2x – 30), what is the value of x? (HINT** remember how we label angles, th

ink about what type of angles these are)
a
60
b
40
c
75
d
15

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
6 0

Answer:

b

Step-by-step explanation:

∠ BAD = 90° and

∠ DAC + ∠ CAB = ∠ BAD, that is

x + 2x - 30 = 90

3x - 30 = 90 ( add 30 to both sides )

3x = 120 ( divide both sides by 3 )

x = 40 → b

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