27 vector mechanics for engineers volume 11 answer

Bond [772]

The answer is A. I got this answer by crossing out the possibilities. 90 degrees and 60 degrees are too short and 180 degrees is too long.

7 0

3 years ago

Choose the point on the terminal side of -45° *will mark brainliest thank you!*

zubka84 [21]

Answer:

Option B.(4,-4)

Step-by-step explanation:

we know that

1) An angle 45 degrees means that the absolute value of the x-coordinate of the point on the terminal side is equal to the absolute value of the y-coordinate of the point on the terminal side

2) An angle of -45 degrees lies on the IV Quadrant

That means------> The x-coordinate is positive and the y-coordinate is negative

therefore

The point on the terminal sides of -45 degrees is the point (4,-4)

4 0

4 years ago

What is the solution to the following inequality?<br> 14 <-7x

RoseWind [281]

Answer:

Therefore x >-2

4 0

4 years ago

Suppose that a recent poll found that 40% of adults in a certain country believe that the overall state of moral values is poor.

shusha [124]

Answer:

Step-by-step explanation:

Let X be the no of adults whose feelings the state of morals is poor.

X has two outcomes and each trial is independent of the other

X is Bin with p = probability for success in each trial =40%=0.40

n=no of adults surveyed = 55

a) The probability that exactly 21 of those surveyed feel the state of morals is poor is

$P(X=21) = 40C21 (0.4)^{21} (1-0.4)^{19} \\=0.03519$

(b) The probability that no more than 22 of those surveyed feel that state of morals is poor is

= $P(X$

(c) The probability that more than22 of those surveyed feel the state of morals is poor is

$P(X>22)\\=1-0.9811\\=0.0119$

(d) The probability that 15 or 16 believe the state of morals is poor is

= $P(X=15)+P(X=16)\\=0.1228+0.1279\\=0.2507$

4 0

4 years ago

You draw three cards from a deck of 52 cards, replacing the drawn card and re-shuffling the deck between each draw. What is the

SIZIF [17.4K]

Answer:

42%

Step-by-step explanation:

just makes sence I think

4 0

3 years ago