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My name is Ann [436]
3 years ago
9

Question B work out angle BXC give reason for each angle you work out.

Mathematics
2 answers:
amm18123 years ago
4 0
Here's what I got. I hope that you understand it and can word it better than I can. 

likoan [24]3 years ago
4 0

Answer:

m \angle BXC = 70\°

Step-by-step explanation:

According to the figure,

\angle XBC \cong \angle AXY, by corresponding angles definition.

So, m \angle XBC = 55\°

Then, m\angle XBC = m\angle XCB, by isosceles triangle theorem.

m\angle XCB=55\°

Now, m\angle XBC + m\angle XCB + \angle BXC = 180\°, by internal angles theorem.

Replacing and solving for \angle BXC}, we have

55 +55 + m\angle BXC = 180\\m\angle BXC = 180-110=70\°

Therefore, m \angle BXC = 70\°

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Answer:

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3 years ago
Find<br>a,b<br>such<br>that 7.2, a, b, 3 are in A.P.​
leonid [27]

Answer:

  • The value of a = 5.8
  • The value of b = 4.4

Step-by-step explanation:

Given

7.2, a, b, 3 are in A.P

2a = 7.2+b

b = 2a - 7.2

as

a, b, 3 are also in A.P

2b\:=\:a\:+\:3

Putting b = 2a - 7.2

2\left(2a-7.2\right)=a+3

4a-14.4=a+3

\mathrm{Add\:}14.4\mathrm{\:to\:both\:sides}

4a-14.4+14.4=a+3+14.4

4a=a+17.4

4a-a=a+17.4-a

3a=17.4

\mathrm{Divide\:both\:sides\:by\:}3

\frac{3a}{3}=\frac{17.4}{3}

a=5.8

Now, plugging a=5.8 in b = 2a - 7.2

b=2\left(5.8\right)-7.2

b=2\cdot \:5.8-7.2

b=11.6-7.2

b=4.4

Therefore,

  • The value of a = 5.8
  • The value of b = 4.4
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3 years ago
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2 years ago
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Answer:

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Step-by-step explanation:

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5 0
3 years ago
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stealth61 [152]

Answer:

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