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Elena-2011 [213]
3 years ago
8

How do I find x in this triangle?

Mathematics
1 answer:
timama [110]3 years ago
5 0

Answer:

B=5

Step-by-step explanation:

a2+b2=c2

12squared+b2=13squared

144+b2=169 Subtract by 144 on both sides

b2=25 Find square root of 25

b=5

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ASAP Help me please!!
Anvisha [2.4K]
<h3>Answer:  x = 14</h3>

=============================================

Work Shown:

Refer to the diagram below. I've added a line segment and two variables y and z. This forms two isosceles triangles.

The central angle 56 degrees subtends the same arc as the inscribed angle y. By the inscribed angle theorem, this means y = 56/2 = 28. The inscribed angle is always half of the central angle (when both angles subtend the same arc).

Focus on the smaller isosceles triangle that has angles 56, z and z. Those three angles add to 180

z+z+56 = 180

2z+56 = 180

2z = 180-56

2z = 124

z = 124/2

z = 62

Now focus on the larger isosceles triangle (angles y = 28, x+z and x+z)

We'll use the same trick as before.

(x+z)+(x+z)+(y) = 180

(x+62)+(x+62)+(28) = 180 ... plug in z = 62 and y = 28

2x+152 = 180

2x = 180-152

2x = 28

x = 28/2

x = 14

7 0
2 years ago
Let f(x)=3x2 +4 and let g (x)= x+2<br> find (f+g) (x).
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5 0
3 years ago
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To make 20 pancakes you have to use 3 eggs. how many eggs do you use to make 100 pancakes?
SashulF [63]
3/20 = 0.15
0.15 * 100 = 15
You would need to use 15 eggs for 100 pancakes.
8 0
2 years ago
Help here pls. im just confused on what its asking me
Yuliya22 [10]

It's just telling you to multiple like 9×1=9 9×2=18 and so on.

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What is the decimal expansion for 12 8/9 ​?
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The decimal form of the fraction is 12.88...

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