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Elina [12.6K]
3 years ago
7

BRAINLIEST!!! 2. Use the unit circle to find the value of cot (–90°).

Mathematics
1 answer:
Sholpan [36]3 years ago
3 0

Answer:

cot(- 90)° = 0

Step-by-step explanation:

Using the identity

cot x = \frac{cosx}{sinx} , then

cot(- 90)° = \frac{cos(-90)}{sin(-90)} = \frac{0}{-1} = 0

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Svetlanka [38]

Answer:

80

Procedure in attached file

Hope it helps

7 0
3 years ago
85% of the people survey thought the price of the car wash was reasonable. If 164 people thought the cost of the car wash was re
8090 [49]

192 people were survey

Step-by-step explanation:

The given is:

  • 85% of the people survey thought the price of the car wash was reasonable
  • 164 people thought the cost of the car wash was reasonable

We need to find how many people were survey

Assume that x people were survey

∵ There were x people survey

∵ 85% of them thought the price of the car wash was reasonable

∴ The number of the people who thought the price of the car wash

   was reasonable = 85% × x

∵ 85% = \frac{85}{100} = 0.85

∴ The number of the people who thought the price of the car wash

   was reasonable = 0.85 x

∵ 164 people thought the cost of the car wash was reasonable

- Equate 0.85 x and 164

∴ 0.85 x = 164

- Divide both sides by 0.85

∴ x = 192.94

∵ x represents a number of people, then it must be integer

∴ The number of people were survey = 192

192 people were survey

Learn more:

You can learn more about percentage in brainly.com/question/12960754

#LearnwithBrainly

7 0
3 years ago
In 2012, New York had a population of about 19 million people,
alexandr1967 [171]

Answer:

B(if the option is 10^7 instead of  107

Step-by-step explanation:

no. of people in New York=19000000

no. of people in Vermont =626,000

difference in populations = 19000000-626,000 =18374000

therefore, the difference in populations is 18374000

(which can also be written as 1.8374x10^7)

7 0
2 years ago
The ratio of the length of Adam's banner to the length of Sam's banner is 5:9. Sam's banner is 40 inches longer than Adam's bann
goblinko [34]

Answer:

25

Step-by-step explanation:

5:9

x:40

what is the realationship between 9 and 40? -9x5=40

so 5x5=25 so x=25

5:9x5:5=25:40

7 0
3 years ago
What is h a=1/2bh what is h
Ivahew [28]
If it is a triangle h is height and b is base.
8 0
3 years ago
Read 2 more answers
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