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ivanzaharov [21]
3 years ago
9

If angle adc=134 and adb=5x+4 and bdc=7x-2 what does angle bdc measure

Mathematics
1 answer:
ruslelena [56]3 years ago
8 0
As I've shown on picture that I attached:
∠ADC=∠ADB+∠BDC⇒134=5x+4+7x-2
12x+2=134
12x=132⇒x=132/12
x=11
Angle BDC measure 7x-2=7*11-2⇒∠BDC=75.

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Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

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Step-by-step explanation:

<u>Step 1: Define</u>

<u />\frac{-5 \pm \sqrt{5^2-4(3)(1)} }{2(3)}<u />

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<u>Step 2: Evaluate</u>

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  3. Evaluate Subtraction:                  \frac{-5 \pm \sqrt{13} }{6}
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