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adelina 88 [10]
3 years ago
15

Geometry proofs! 100+ points!

Mathematics
2 answers:
bonufazy [111]3 years ago
8 0

1. BC/CD = AC/CE 1. Given

2. <BCA is congruent to <ECD 2. Vertical angles are congruent

3. Tr.ACB is congr to Tr.ECD 3. SAS Similarity

Leona [35]3 years ago
5 0
1. BC/CD = AC/CE                                1. Given
2. <BCA is congruent to <ECD              2. Vertical angles are congruent
3. Tr.ACB is congr to Tr.ECD                 3. SAS Similarity
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Find a. Roud to the nearest tenth:<br> 2cm<br> 15*<br> a<br> 105*<br> c
MariettaO [177]

Answer:

So since we use law of sines. We can get 2 fractions equal to eachother but first we need to solve for missing angle. That would be 180-105-15 = 60

So now we can get a fraction. So that means that sin(105)/2 = sin(60)/a

Then we do recipricol. 2/sin(105) = a/sin(60)

multiply by sin(60) both sides.

2sin(60)/sin(105) = a

round and solve and we get a is equal to

1.7931 or 1.8

6 0
3 years ago
Multiply. Express your answer in simplest form. 9 1/6 × 1 1/11
Sati [7]

Answer:

10

Step-by-step explanation:

First convert the fractions.

9 1/6 to 55/6  and 1 1/11 to 12/11

With these fractions, you can cross out 11 and 6.

55   times    12             5   ×    2

6                   11              1   ×    1

This equals 10/1 or 10

8 0
3 years ago
Read 2 more answers
Jim ordered a sports drink
Pie

Answer:

Why did Jim order a sports drink?

Step-by-step explanation:

Why does Jim matter?

4 0
3 years ago
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Find the surface area of a cylinder with a base radius of 2 in and a height of 3 in.
Dennis_Churaev [7]

Answer:

62.8 in

Step-by-step explanation:

formula to find surface area of cylinder = 2πrh + 2πr²

2 × 3.14 × 2 × 3 + 2 × 3.14 × 2²

37.68 + 25.12

62.8 in

4 0
3 years ago
Can someone please explain to me how to work this out?
Ludmilka [50]

Answer:

B

Step-by-step explanation:

the way i work it out is if you take the product and power it to the third you can easily find out which answer is correct. another way, if you don't have a calculator is to look at the last digit in the number in the square root sign.

For example, 3 square root 64 equals 8. you would look at the 4 and try to find 3 numbers that end in 4 OR is divisible three times by the number. 64 is exactly divisible by 4 only 3 times so you know that it can't be 8.

hope this helps!

3 0
3 years ago
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