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PilotLPTM [1.2K]
3 years ago
14

Find the direction angle of v for the following vector.

Mathematics
1 answer:
Harrizon [31]3 years ago
7 0

Answer:

θ = -36.9° or +323.1°

Step-by-step explanation:

θ = arctan(-6 / 8) = -36.86989...

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Which equation has roots of 3plus or minus sqare rt 2?
vichka [17]

Answer:

Option D is correct.

The equation with roots 3 plus or minus square root 2 is x² - 6x + 7

Step-by-step explanation:

The roots of the unknown equation are

3 ± √2, that is, (3 + √2) and (3 - √2)

The equation can then be reconstructed by writing these roots as the solutions of the quadratic equation

x = (3 + √2) or x = (3 - √2)

The equation is this

[x - (3 + √2)] × [x - (3 - √2)]

(x - 3 - √2) × (x - 3 + √2)

x(x - 3 + √2) - 3(x - 3 + √2) - √2(x - 3 + √2)

= x² - 3x + x√2 - 3x + 9 - 3√2 - x√2 + 3√2 - 2

Collecting like terms

= x² - 3x - 3x + x√2 - x√2 - 3√2 + 3√2 + 9 - 2

= x² - 6x + 7

Hope this Helps!!!

6 0
3 years ago
Please answerrrr, its not that hard i dont think lol, i j dont know it :)
dlinn [17]

Not a function.

It's conic section parabola. It's just a relation.

6 0
2 years ago
Find the perimeter of the polygon
Zielflug [23.3K]

Answer:

100

Step-by-step explanation:

Okay so I'm not 100% sure but I think it's 100 because:

Angle B and D are the same, so the 12.5 areas will be the same (I honestly suck at explaining I'm really sorry.) But, if you add the sides from angle B and D it will be 50 because 12.5 + 12.5 + 12.5 + 12.5 (or 12.5 * 4). Meanwhile, For angle A and C, both outsides are the same as the other side.

I'm so sorry I can't explain the problem well but once you add them:

11.5 + 11.5 + 12.5 + 12.5 + 12.5 + 12.5 + 13.5 + 13.5 = 100

4 0
3 years ago
A grocery store chain uses loyalty cards that offer discounts on sale attheir store. The probability that a randomly chosen shop
Ghella [55]
The answer is a cause
4 0
3 years ago
What is the length of a missing side of a 48 feet and 52 feet 90° triangle
RideAnS [48]

Answer:

5

Step-by-step explanation:

5 0
3 years ago
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