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Reil [10]
3 years ago
14

Classify the number as rational or irrational.

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0
Rational
Irrational
Rational
Rational
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Mark is making a decoration for a rally, using a string of triangular strips. Each strip is an isosceles triangle when flattened
jeyben [28]

Solution:

Consider the Given Isosceles Triangle

Considering the Possibilities

Case 1. When two equal angles are of 70°

 Let the third angle be x.

Keeping in mind , that sum of Interior angles of Triangle is 180°.

70° + 70° + x= 180°

140° +x= 180°

x= 180°- 140°

x= 40°

Case 2:

When an angle measures 70°, and two equal angles measure x°.

Keeping the same property of triangle in mind, that is sum of interior angles of triangle is 180°.

70° + x° + x° = 180°

⇒  70° + 2 x° = 180°

⇒ 2 x° = 180° -  70°

⇒ 2 x° = 110°

Dividing both sides by 2, we get

x= 55°


5 0
3 years ago
seven different names are written into sticks and placed into a cup. A stick is chosen 100 times,out of which the name Grace is
NeX [460]

Answer:

The experimental and theoretical probabilities are considerably different. This has to do with the small number of trials. For a higher number of trials, the experimental probability should be very close to the theoretical probability of 0.1429.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Theoretical probability:

The theoretical probability is calculated without considering previous trials.

Experimental probability:

Calculated considering previous trials.

For a small number of trials, these probabilities can differ, but the experimental probability approximates the theoretical as the number of trials increase.

Seven different names are written into sticks and placed into a cup.

So the theoretical probability of choosing Grace is:

p_T = \frac{1}{7} = 0.1429

A stick is chosen 100 times,out of which the name Grace is chosen 23 times.

So the experimental probability is:

p_E = \frac{23}{100} = 0.23

How do the theoretical probability and experimental probability compare?

The experimental and theoretical probabilities are considerably different. This has to do with the small number of trials. For a higher number of trials, the experimental probability should be very close to the theoretical probability of 0.1429.

6 0
3 years ago
Using the correct graph, describe the association shown. Will mark brainliest❤️
olchik [2.2K]

Answer:

it is linear association

Step-by-step explanation:

3 0
3 years ago
Which one is non linear??
Harman [31]

Answer:

The third one I think, I might be wrong.... hope this helps anyways :)

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
PLEASE HELP ME SOLVE THIS. Find the value of x and y. Round your answer to the nearest tenth. ​
ElenaW [278]
Sin20 = x/5
5sin20 = x

x = 1.71

cos20 = y/5
5cos20 = y

y = 4.70

Hope this helps.
5 0
3 years ago
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