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zloy xaker [14]
2 years ago
6

18. In AABC, 44 is a right angle, and m4B 45°. What is the length of BC? If the answer is not an integer, leave it in simplest r

adical form. The
diagram is not drawn to scale.

054 ft

17√3 ft

17√2 ft

017

Mathematics
1 answer:
Lera25 [3.4K]2 years ago
8 0

Answer:

17√3

Step-by-step explanation:

In a 45-45-90 triangle, the hypotenuse is √3 times larger than the legs.

17*√3 = 17√3

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I’m lost please help
vagabundo [1.1K]

Answer:

See proof below

Step-by-step explanation:

Two triangles are said to be congruent if one of the 4 following rules is valid

  1. The three sides are equal
  2. The three angles are equal
  3. Two angles are the same and a corresponding side is the same
  4. Two sides are equal and the angle between the two sides is equal

Let's consider the two triangles ΔABC and ΔAED.

ΔABC sides are AB, BC and AC

ΔAED sides are AD, AE and ED

We have AE = AC and EB = CD

So AE + EB = AC + CD

But AE + EB = AB and AC+CD = AD

We have

AB of ΔABC  = AD of ΔAED

AC of ΔABC =  AE of ΔAED

Thus two sides the these two triangles. In order to prove that the triangles are congruent by rule 4, we have to prove that the angle between the sides is also equal. We see that the common angle is ∡BAC = ∡EAC

So  triangles ΔABC and ΔAED are congruent

That means all 3 sides of these triangles are equal as well as all the angles

Since BC is the third side of ΔABC and ED the third side of ΔAED, it follows that

BC = ED  Proved

5 0
1 year ago
Time (minutes)
damaskus [11]

Answer:    The extra-size chart

  • 5 basketball
  • 3 footballs
  • 5 running
  • 3 jogging
  • 4 jumping jacks
  • 5 sit up

Step-by-step explanation:

4 0
3 years ago
Which angle is congruent to angle B?<br><br><br> A. ∡C<br> B. ∡D<br> C. ∡E<br> D. ∡F
Leokris [45]
Option B
Angle D is congruent to angle B
5 0
2 years ago
Read 2 more answers
Kind of confused, can someone help?
notsponge [240]
I hope this helps u, this is my last year answer for the question

6 0
3 years ago
This is part 4 the last part ​
matrenka [14]
Square head your welcome
5 0
3 years ago
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