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9966 [12]
3 years ago
8

How many triangles can you make from straws with the lengths 2,1,2 inches?

Mathematics
1 answer:
marysya [2.9K]3 years ago
6 0

Answer:

You can make one triangle with these lengths

Step-by-step explanation:

we know that

The <u>Triangle Inequality Theorem</u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

Verify if the lengths satisfy the triangle inequality theorem

1) 2+1 > 2

3 > 2 ------> is true

2)2+2 > 1

4 > 1 -----> is true

so

The lengths  satisfy the triangle inequality theorem

therefore

You can make one triangle with these lengths

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Find m(angle) ABC<br><br>21 <br><br>132<br><br>48<br><br>19
Brut [27]

I don't like these algebra problems which pretend to be geometry.

These are supplementary angles adding to 180 degrees; geometry done.

7x - 1  + 3x - 9 = 180

10 x = 190

x = 19

ABC=3x - 9 = 3(19) - 9 = 48

Answer 48°


5 0
3 years ago
Read 2 more answers
Which number sentence has a difference of 5?<br> 8-(-3)<br> 0<br> -3-8<br> -3-(-8)<br> 3-(-8)
valina [46]

Answer:

The 4th one

Step-by-step explanation:

-3-(-8)=5

6 0
2 years ago
Please help me with all thank you
crimeas [40]
1. 7 : 07
2. 9 : 45
3. 6
4. 2 : 25
5. 8
6. 17
5 0
3 years ago
What value of 3x makes the equation true?<br> 5x+3x=5x+15/2
slamgirl [31]

Answer:

2.5

Step-by-step explanation:

when you 5x automatically cancels, and 7.5 / 3 is 2.5

7 0
2 years ago
A model ship is built to a scale of 1 cm : 5m. The length of the model is 25 cm. What is the length of the actual ship?
Anestetic [448]

Answer:

<em>The length of the actual ship is 125 meters.</em>

Step-by-step explanation:

<u>Scaling</u>

Objects can be represented in a reduced or augmented size by using scaling which is basically multiplying or dividing by a constant factor. We use scaling for example, when representing geographic locations on a map.

A model ship is built to a scale of 1 cm: 5 m. This means that each centimeter of the model represents an actual length of 5 m.

The length of the model is 25 cm, thus the real ship has a length of 25*5 = 125 m.

The length of the actual ship is 125 meters.

7 0
2 years ago
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