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dimulka [17.4K]
3 years ago
7

Trig help please, 2 questions, 10 pts

Mathematics
2 answers:
Alex_Xolod [135]3 years ago
7 0

Answer

1=b

2=c

Step-by-step explanation:

just olya [345]3 years ago
6 0
<span>A flywheel rotates 450 times in 1 minute. How many degrees does it turn in 1 second?
a. 39 degrees
b. 2700 degrees
c. 18 degrees
450 times in 60 sec
450 times of 360 deg in 60 sec
162000 deg in 60 sec
162000/60 in 1 sec
2700 deg in 1 sec
choose B 



The speed of a carousel is 4.3 revolutions per minute. James chooses a red horse. If the typical ride is 5 minutes, how far is his starting point is James when the ride is over?
a. 90 degrees
b. 0 degrees
c. 180 degrees
</span>4.3 revolutions per 1 minute
4.3 x 5 revolutions in 5 min 
21.5 revolutions in 5 min
Means: a 21 whole revolution and a half of a revolution. A half of a circle  = 180 degrees.
choose C
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The terminal velocity of a person falling through air is about 100Km/hr. The acceleration due to gravity is 10ms−2. Use this inf
Aleonysh [2.5K]

The question here is how long does it take for a falling person to reach the 90% of this terminal velocity. The computation is:

The terminal velocity vt fulfills v'=0. Therefore vt=g/c, and so c=g/vt = 10/(100*1000/3600) = 36,000/100,000... /s. Incorporating the differential equation shows that the time needed to reach velocity v is 

t= ln [g / (g-c*v)] / c. 

With v=.9 vt =.9 g/c,

t = ln [10] /c = 6.4 sec.

8 0
3 years ago
M-2&lt;-8 or m/8&gt;1<br>I don't know how to solve this
Shkiper50 [21]
I hope this helps you

5 0
3 years ago
I really need help with this question , can someone help me?
Alexxx [7]
I'm too late but here ya go anyway :)

x = 180 - (31 + 40) is the answer.
8 0
3 years ago
Irrational number formula​
alexgriva [62]

Answer:

hope it helps.

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3 0
3 years ago
Can someone help me immediately on this question having to do with triangle ABC?
SVETLANKA909090 [29]
<h3>Answers:</h3><h3>a. Vertices of triangle ABC are: A, B, C</h3><h3>b. Sides of triangle ABC are: AB, BC, AC</h3><h3>c. The side between angle A and angle C is: side AC</h3><h3>d. The angle between sides AB and CA is: angle A</h3><h3>e. Scalene triangle</h3>

=============================================

Explanations:

  • a. Each uppercase letter represents a point or angle of the triangle.
  • b. Connect two points of a triangle and you get a line segment. The order of the letters does not matter. So AB is the same as BA.
  • c. Like with part b, connecting two angles or points forms a segment.
  • d. Note how the letter "A" is in both AB and CA, so this is the shared angle between the two segments.
  • e. Sides AB, BC, and AC are all different lengths, so we have a scalene triangle. If you had two sides equal to each other, then you'd have an isosceles triangle. If all three sides are equal, then it would be equilateral.

There is no need for a diagram, but if you want, you can draw one out. See the attached image below for the diagram. This diagram should hopefully answer any questions you may have about the explanations above. There are many ways to draw the triangle, so your diagram might look different from mine.

7 0
3 years ago
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