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jenyasd209 [6]
3 years ago
13

A box of colored crayons contains 9 distinct colors. In how many ways can 2 colors be chosen, assuming that the order of the col

ors chosen that doesnt matter?
Mathematics
1 answer:
shepuryov [24]3 years ago
3 0

Answer:

36

Step-by-step explanation:

We can use combinations

9 choose 2 =

9!/(7!*2!) = (9*8)/2 = 36

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The height of the ceiling is 162.31 meters

The situation will form a right angle triangle.

<h3>Right angle triangle:</h3>

Right triangle has one of its angles as 90 degree. Therefore, the sides can be found using trigonometric ratios

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tan 62.7 = x / 83

cross multiply

x = 83 × tan 62.7

x = 160.809554025 m

Therefore, the height of the ceiling form the ground is as follows:

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3 years ago
HELP NEEDED ASAP! Thanks :)
Arlecino [84]

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3

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4 0
2 years ago
Find the length and perimeter of a rectangle if its width is 19 m and its area is 475 m?.
Allisa [31]

The length of the rectangle is: 25 m

The perimeter of the rectangle is: 88 m

<h3>What is the Area and Perimeter of a Rectangle?</h3>

Area of a rectangle = (length)(width).

Perimeter of a rectangle = 2(length + width).

Give the following:

Width of rectangle = 19 m

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Find the Length using the area formula:

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Perimeter of the rectangle = 88 m

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