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damaskus [11]
4 years ago
14

English

Mathematics
1 answer:
gavmur [86]4 years ago
5 0

Answer:

  10°

Step-by-step explanation:

In a right triangle, the ratio of the side opposite an acute angle to the hypotenuse is the sine of the angle. Here, that ratio is 80/445, so we have ...

   sin(angle of elevation) = 80/445

Using the inverse sine function we can find the angle that has this sine value.

  angle of elevation = arcsin(80/445) ≈ 10.36°

The angle of elevation is about 10°.

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On six books shelves there are 72 books per shelf.How many books are there altogether? If 1/3 of these are non-fiction how many
8090 [49]
<h2>Answer:</h2><h3>Part 1:</h3>

Given:

Total shelves: 6

Books per shelve: 72

Total books = ?

Solution:

Total books: 6 * 72 = 432

                                                           Total books = 432

<h3>Part 2:</h3>

Given:

Fiction books = 1/3 of total books

Solution:

Nonfiction books = Total books - 1/3 of total books

                              =   432 - 1/3 * 432

                               = 432 - 166 = 266

                                           Non- fiction books = 266

6 0
3 years ago
Help please and sorry it’s not clear
aliina [53]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
A car used 16 gallons of gas to travel 240 miles . How many gallons would the car use to travel 180 miles
Nikitich [7]

Answer: 12 gallons

Step-by-step explanation:

The car uses 16 gallons to travel 240 miles. You need to calculate how many miles is in a gallon. So, divide 240 by 16 (you get 15). That is 15 miles per gallon. Next, you divide 180 by 15 to calculate how many gallons it would take you to travel 180 miles if there are 15 miles in a gallon.

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3 years ago
X over 4 greater than or equal to negative 8​
Arlecino [84]

x/4 >= -8

Multiply both sides by 4.

x >= (-8)(4)

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8 0
4 years ago
What is 24.2% of 120
katen-ka-za [31]

Answer:

29.04

Step-by-step explanation:

Multiply: 120*.242=29.04

It's multiplied by .242 bc if you want to turn a percentage into a decimal you need to move the decimal twice to the left. So, 24.2 becomes .242.

3 0
3 years ago
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