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kozerog [31]
2 years ago
15

In ΔABC, If AB=BC and ∠B=40∘,what is the measure of ∠C?

Mathematics
1 answer:
AlekseyPX2 years ago
7 0

Answer:

70

Step-by-step explanation:

all angles in a triangle add up to 180

if two sides are equal their angles are equal

180-40

140÷2

70

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Please help! Thank you
Vanyuwa [196]

Answer:

x = 82°

y = 59°

z = 39°

Step-by-step explanation:

∠x = 1/2(134° + 30°) = 82°

∠z = 180° - 59° - 82° = 39°

arc DF = 2(39°) = 78°

arc DB + arc DF = 134° + 78° = 212°

draw a diameter down from point B to the opposite side of the circle, call that point P:

arc BDP = 180°

(arc BDF) 212° - 180° = 32° (arc PF)

∠PBG = 1/2(32°) = 16°

∠DEB = 1/2(134°) = 67°

∠DBE = 180° - 59° - 67° = 54°

(∠DBE) 54° - (∠z) 39° + (∠PBG) 16° = (∠PBE) 31°

y = 90°- 31° = 59°

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2 years ago
A bag contains eight red marbles three blue marbles and one green marble find P not blue
suter [353]
9 marbles are not blue
7 0
3 years ago
The sum of x and 5 is 12. What is the value of x? Enter your answer in the box as a fraction in simplest form. x =
larisa [96]

This might help it has tons of different problems for your subject.


https://www.wyzant.com/resources/lessons/math/algebra/calculators/proportion

5 0
3 years ago
Read 2 more answers
Anybody down to help?
vova2212 [387]

Answer:

A to D E to B C to F F to 216

This ez

Step-by-step explanation:

3 0
3 years ago
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What is the percent of change from 28 to 70
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Your answer will be 150 percent
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