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Mice21 [21]
3 years ago
7

I suck a writing proofs in geometry.... please someone explain it to me, i cant seem to reconize what's going on. I need major h

elp in properties of congruent proofs.
Mathematics
1 answer:
Rashid [163]3 years ago
3 0
Congruence Properties

In earlier mathematics courses, you have learned concepts like the commutative or associative properties. These concepts help you solve many types of mathematics problems. There are a few properties relating to congruence that will help you solve geometry problems as well. These are especially useful in two-column proofs, which you will learn later in this lesson!

The Reflexive Property of Congruence

The reflexive property of congruence states that any shape is congruent to itself. This may seem obvious, but in a geometric proof, you need to identify every possibility to help you solve a problem. If two triangles share a line segment, you can prove congruence by the reflexive property.

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Jen Butler has been pricing​ Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 99. 
8090 [49]

Answer:

An adult ticket is 17

A childs ticket costs 12 dollars

Step-by-step explanation:

Let a = adult price

c = child price

3a + 4c = 99

2a + 3c = 70

Multiply the first equation by 2

2(3a + 4c) = 99*2

6a + 8c = 198

Multiply the second equation by -3

-3 (2a + 3c) = 70*-3

-6a -9c = -210

Add these new equations together

6a + 8c = 198

-6a -9c = -210

----------------------

     -c = -12

Multiply by -1

        c = 12

A childs ticket costs 12 dollars

Now we need to find the price of an adult ticket

2a + 3c = 70

2a + 3(12) = 70

2a +36 = 70

Subtract 36 from each side

2a +36-36 =70-36

2a = 34

Divide by 2

2a/2 = 34/2

a = 17

An adult ticket is 17

7 0
3 years ago
Two distinct planes __________ intersect in a pair of lines
hammer [34]
If the planes are parallel to one another then they will never intersect (assuming they are distinct planes as the question states).

Otherwise they will intersect along a single line.

Therefore the answer is NEVER - they can never intersect in a pair of lines.
3 0
3 years ago
A. 18 square root of 2 B.18/ square root of 3 C.18 square root of 2 / square root of 3 D. 18 times square root 3 / square root o
kirza4 [7]

Step-by-step explanation:

A. 18√2

= 25.4558441227

B. 18/√3

= 6√3

= 10.39230485

C. 18√2 /√3

= 6√6

= 14.69693846

D. 18 · √3 / √2

= 9√6

= 22.04540769

6 0
2 years ago
Write the converse of the conditional statement. Determine whether the converse is true or false. If it is false, find a counter
Bumek [7]

Answer:

a. is True.

Step-by-step explanation:

Collinear points are on the same line.

The converse is:

If the points are on the same line the the points are collinear. This is True.

7 0
2 years ago
Length <br> Width <br><br> Pls help me
svetoff [14.1K]
These are the steps needed for this question hope this helps if there is any more questions do feel free to ask them

3 0
2 years ago
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