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Ghella [55]
3 years ago
11

6.soruyu çözer misiniz lütfen? Bu arada sağdaki okun sonunda E yazıyor. 65 PUAN!!!

Mathematics
2 answers:
Scorpion4ik [409]3 years ago
4 0

Answer:

< BCD = 60°

Step-by-step explanation:

AB || DE = > <DEC = 180° - 130° = 50°

<EDC = 180° - 110° = 70°

< BCD = 180° - (50° + 70°)

= 180° - 120°

= 60°

gavmur [86]3 years ago
3 0

Answer:

60°

Step-by-step explanation:

Extend AB beyond B, extend the segment with point D beyond D so it intersects BC at point E, and extend CD beyond D so that it intersects the extension of AB at point F (see attachment).

Now, we have two triangles: ΔCBF and ΔCED. Because DE || BF, then the two triangles are similar from equal angles.

ABF is a line, so ∠ABF = 180. We also know that ∠ABF = ∠ABC + ∠CBF = 130 + ∠CBF = 180. Then ∠CBF = 50°. Because the two triangles are similar and ∠CBF corresponds with ∠CED, then ∠CED = ∠CBF = 50°.

DE is also a line, so it is 180°. From similar reasoning as above, ∠CDE = 180 - 110 = 70°.

Since CDE is a triangle, its angles add up to 180°, so:

∠CED + ∠ECD + ∠CDE = 180

50 + ∠ECD + 70 = 180

∠ECD = ∠BCD = 60°

The answer is 60°.

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Please put the explanation!
BaLLatris [955]

Answer:

60

Step-by-step explanation:

In order to get this answer, we must know that a triangle's angles add up to exactly 180. Also, Angles that intersect will have congruent, opposite sides. The last thing is that a line is = 180 degrees. So, the triangle with the 94 and the 142, you can use that. the angle next to the 142 is going to be 180-142 which is 38 and since the other angle is opposite 94, as well. when you add those up u get 132 and 180-132= 48 which is the missing angle for the far right triangle. then, you get the opposite of that angle, put that in the other triangle, do the same with the 72, and add those up to get 120 and since a triagle adds up to 180, 180-120 = 60. So, 60 is your missing angle. Cheers

5 0
2 years ago
Find two negative consecutive odd integers whose product is 143
Likurg_2 [28]
The answer is -11 and -13
4 0
3 years ago
Explain how you would convert a measurement given in ounces into pints
Greeley [361]
8 ounces = 1cup
2 cups = 1 pint
So, 16 ounces = 2 cups = 1pint
16 ounces = 1 pint

If you have 8 ounces, you would have half a pint.
If you have 20 ounces:
20 ounces/16 ounces= 5/4
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4 0
3 years ago
Neeed math hellppp!!!!
aleksklad [387]
Answer: A

Step by step: None
6 0
3 years ago
Read 2 more answers
The prices of two ratios are in the ratio x:y
Archy [21]

Answer:

4:1

Step-by-step explanation:

x+20 : y+20 = 5 : 2

(x+20)/(y+20) = 5/2

2(x+20) = 5(y+20)

2x+40 = 5y+100

2x = 5y+60 (1)

x-5 : y-5 = 5:1

(x-5)/(y-5) = 5/1

x-5 = 5(y-5)

x-5 = 5y-25

x = 5y-20 (2)

Solve (1) & (2) simultaneously,

2(5y-20) = 5y+60

10y-40 = 5y+60

5y = 100

y = 20

x = 5y-20

x = 5(20)-20 = 100-20

x = 80

x:y

80:20

4:1

8 0
3 years ago
Read 2 more answers
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