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sveticcg [70]
3 years ago
15

Help me pleaseeeeeeee

Mathematics
1 answer:
Hitman42 [59]3 years ago
4 0
True i think I don’t really know
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Which equation could be used to find the height of the flagpole
Sauron [17]
X = height of pole (in meters)

With respect to the 50 degree angle, the side x is the opposite leg. It is the leg furthest from the reference angle. The hypotenuse is 5 meters. 

The trig function sine ties together the opposite and hypotenuse

sin(angle) = opposite/hypotenuse
sin(50) = x/5
5*sin(50) = x .... multiply both sides by 5
x = 5*sin(50)

------------------

Since x = 5*sin(50) isn't listed as an answer choice, let's try using cosine. We can't use it right away because we don't know the adjacent side. What we can do is change the reference angle. The missing angle of the triangle is 90-50 = 40 degrees. Let's make the 40 degree angle the reference angle

So x is now the adjacent side with respect to the 40 degree reference angle. The hypotenuse is always the longest side. The hypotenuse stays at 5.

cos(angle) = adjacent/hypotenuse
cos(40) = x/5
5*cos(40) = x
x = 5*cos(40)

This expression is listed. The answer is choice B

4 0
3 years ago
Convert 50 miles per hour to feet per second ( 1 mile = 5280 feet and 1 hour = 3600 seconds )
wolverine [178]

Answer:

73.3

Step-by-step explanation:

50mi/h * 5280ft/mi * 1h/3600s = 220/3 = 73.3 ft/s

6 0
3 years ago
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The area of a square is 16 square units. What is the length of a side?
Sunny_sXe [5.5K]

Answer:

4 is the length of a side.

Step-by-step explanation:

16 divided by 4 equals 4

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3 years ago
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X/7-4=-2 thancks if you help me
Nutka1998 [239]
X/7-4 = - 2
x = 14

i am a mathematics teacher. if anything to ask please pm me
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What are the first twelve natural numbers​
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Answer:

First 12 natural numbers are: 1,2,3,4,5,6, 7,8,9,10,11 abs …. 12. Now, substitute 78 for the sum of observations and 12 for the total number of observations in the formula M=Sn to determine the arithmetic mean. Hence, 6.5 is the arithmetic mean of the first 12 natural numbers.

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2 years ago
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