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3 years ago

carlos lives 100m away from his friend's home what is his average speed if he reaches his friend's home in 50s

1 answer:

6 0

It would probably be 2 seconds per meter. Carlos is going at a speed of 2 SECONDS PER METER. (Also, I doubt that's possible.)

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for v= 4i - 5j, find unit vector u in the direction of v, and write your answer as a linear combination of the standard unit vec

umka21 [38]

Answer:

a. $u=\frac{4\sqrt{41}i }{41}-\frac{5\sqrt{41}j}{41}$

Step-by-step explanation:

The given vector is v= 4i - 5j

The magnitude of this vector is;

$|v|=\sqrt{(-4)^2+(-5)^2}$

$|v|=\sqrt{16+25}$

$|v|=\sqrt{41}$

The unit vector u in the direction of v is;

$u=\frac{v}{|v|}$

$u=\frac{4i - 5j}{\sqrt{41}}$

$u=\frac{4i }{\sqrt{41}}-\frac{5j}{\sqrt{41}}$

We rationalize to get

$u=\frac{4\sqrt{41}i }{41}-\frac{5\sqrt{41}j}{41}$

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3 years ago

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larisa [96]

Answer:

C) a type of drug used to cure, prevent, or treat illness or discomfort.

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If θ = 330° and α = 300°, find the exact value of tan θ − sin α.

Vilka [71]

X = tan (330) - sin (330)
x = 0.133557089 - -0.132381629
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x = 0.265938718

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3 years ago

Solve 3(x + 2) > x.

Georgia [21]

3(x + 2) > x
3x + 6 > x
3x - 3x + 6 > x - 3x
6 > -2x
6/-2 < -2x/-2
-3< x
(When dividing by a negative, reverse the direction of the inequality side, reverse it EVERY time you divide by a negative)

ANSWER: -3 < x

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A principal at a large high school wants to estimate the number of days freshmen regularly ride the bus to school.

nikitadnepr [17]

Answer:

b. using a sample of size 40

Step-by-step explanation:

edg 2020

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