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Oxana [17]
3 years ago
11

Michelle went on a hike. She started on the trail at 6:45 a.m and returned at 3:28 p.m. How long did she hike?

Mathematics
2 answers:
Lerok [7]3 years ago
8 0
D. Because if one time is a certain amount of time away from 12pm and the other one is a certain amout away from 12pm then you add them up and get a number of hours and minutes
Dmitrij [34]3 years ago
6 0
Its really simple if u think about it.from 6:45 to 2:45 its 8 hours and from 2:45 to 3:28 its 43 minutes. hope it helped.☺☺
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Given c=(2.4,0.45) and d = (7,-4) find the direction of 5c+4d
kakasveta [241]

Answer:

The direction of 5c + 4d is approximately 19.0° clockwise with

the positive part of x-axis

Step-by-step explanation:

* Lets talk about the direction of a vector

- If the vector is (x , y), then  

# Its magnitude is √(x² + y²)

# Its direction is tan^-1 (y/x)

- The direction is the angle between the positive part of x-axis and  

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* Lets solve the problem

∵ c = (2.4 , 0.45) and d = (7 , -4)

- To find 5c + 4d , multiply the two coordinates of c by 5 and the two

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# Multiply c by 5

∴ 5c = [5(2.4) , 5(0.45)]

∴ 5c = (12 , 2.25)

# Multiply d by 4

∴ 4d = [4(7) , 4(-4)]

∴ 4d = (28 , -16)

- Lets add 5c and 4d

∴ 5c + 4d = (12 , 2.25) + (28 , -16)  

∴ 5c + 4d = [(12 + 28) , (2.25 + -16)]

∴ 5c + 4d = (40 , -13.75)

- The vector is in the 4th quadrant because the x-coordinate is

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* Find the direction of 5c + 4d

∵ The direction is tan^-1 (y/x)

∴ The direction is tan^-1 (-13.75/40) = -18.97°

* The direction of 5c + 4d is approximately 19.0° clockwise with

 the positive part of x-axis

3 0
3 years ago
If sin A = 6 over 13, then which of the following is correct?
Inessa [10]
Answer is B. CSC A= 13 over 6
You need to learn these basic rules:
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In saying this, CsC is the reciprocal for Sin. You would have to switch the numerator and denominatior to get your answer
4 0
3 years ago
Free points to y'all. 1+1+1*0​
DiKsa [7]
I think it’s probably 12
7 0
3 years ago
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SVEN [57.7K]
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3 0
3 years ago
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Andre45 [30]

Answer:

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Step-by-step explanation:

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4 0
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