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Trava [24]
3 years ago
13

Please help will give thanks

Mathematics
1 answer:
7nadin3 [17]3 years ago
6 0

The value of CD = 12.687

Step-by-step explanation:

From the triangle ABC,

AC^{2}= AB^{2}+ BC^{2} ( by using Pythagoras theorem)

or, BC^{2}= AC^{2} - AB^{2}

or, BC^{2} = 144 - 36 = 108

BC = \sqrt{108} = 6\sqrt{3}

Now,

\frac{BC}{CD} = sin 55

or, CD = BC / sin 55

= 6\sqrt{3} / sin 55

=12.687

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Step-by-step explanation:

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3 0
2 years ago
Answer choices:
vova2212 [387]
A and T are points. On their own, they cannot define a line. So we can rule out choice A

WCR and TRA are angles. For any triple the points do not fall on the same straight line. So we cannot define any lines here. This crosses off choice B

Choice C is the answer because WC does define a line. We only need two points to form a line. Similarly CR does the same job. We draw a line marker with two arrows at each end to be placed over the letters to indicate "line". 

Choice D is similar to choice D; however, it is not the answer because WT is the same line as WC. In other words, WC = WT. We haven't named a new line at all. We're simply repeating ourselves. 
6 0
3 years ago
What is 17 divided by 2635
Sliva [168]

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Step-by-step explanation:

8 0
3 years ago
Please please help ASAP! Classify each angle!
Olenka [21]

Answer:

<h3>             Acute Angles: ∠TLS, ∠SLT, ∠ULR</h3><h3>             Right Angles:   ---------</h3><h3>             Obtuse Angles:  ∠RLT, ∠SLU, ∠ULS,</h3><h3>             Straight Angles:  ∠RLS, ∠TLU </h3><h3>             Not angles: ∠TRL </h3>

Step-by-step explanation:

The lines intersect at point L, so all angles have a vertex (middle letter) L so there is no angle TRL

Straight angle is a line with dot-vertex, so the straight angles are ∠RLS and ∠TLU.

∠TLS is less than 90° then it is acute angle (∠SLT is the same angle). ∠ULR is vertex angle to ∠TLS, so it's also acute angle.

Two angles adding to straight angle mean that they are both right angles or one is acute and the second is obtuse. ∠TLS is acute so ∠RLT is obtuse (they adding to ∠RLS) and ∠SLU is obtuse (they adding to ∠TLU). ∠ULS is the same angle as ∠SLU.

8 0
3 years ago
|-13|+|26|-|-18|+|-12|
castortr0y [4]
33
The lines stand for absolute value. The expression would then look like:
13+26-18+12
39-18+12
21+12
33


3 0
3 years ago
Read 2 more answers
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