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3 years ago

PLEASE GIVE A FULL REASONABLE EXPLANATION IF NOT JUST DONT ANSWER

Mathematics

2 answers:

Andrews [41]3 years ago

6 0

Step-by-step explanation:

Add all the books then find the average

ella [17]3 years ago

3 0

Answer:

The Mean is 6.142

Step-by-step explanation:

The mean is the total of the numbers divided by how many numbers there are.

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Let a=<-4,-3,5> Find a unit vector in the same direction as having positive first coordinate.

Rashid [163]

Answer:

The value is $u = < \frac{2\sqrt{2}}{10} , \frac{3\sqrt{2}}{10} , - \frac{\sqrt{2}}{2}>$

Step-by-step explanation:

From the question we are told that

The vector is a=<-4,-3,5>

Generally the unit vector is $u = ay$

Here y represent the y-coordinate

$u =y$

=> $u =$

Generally the resultant of a unit vector is 1

$|u| = \sqrt{ (-4y)^2 + (-3y)^2 + (5y)^2} = 1$

Hence

$|u| = \sqrt{ 16y^2 + 9y^2 + 25y^2} = 1$

Taking the square of both sides

$16y^2 + 9y^2 + 25y^2 = 1$

=> $50y^2 = 1$

=> $y = \pm \frac{1}{\sqrt{50}}$

=> $y = \pm \frac{1}{5 \sqrt{2}}$

Rationalizing

=> $y = \pm \frac{\sqrt{2}}{10}$

Given that the first coordinate is positive

$y = - \frac{\sqrt{2}}{10}$

Hence the unit vector is

$u =$

=> $u = < \frac{2\sqrt{2}}{10} , \frac{3\sqrt{2}}{10} , - \frac{\sqrt{2}}{2}>$

4 0

3 years ago

Help me pleaseeee I don’t understand this

user100 [1]

Answer:

Step-by-step explanation:

I don't understand in this specific context what is evaluated means but looking over the options it seems that 0 to the negative 1/2 power seems pretty unlikely . the only reason I don't say 0 to the negative 2nd power is because 0 to the negative 2nd power seems plausible but it doesn't seem like 0 to the negative 1/2 power would ever become a thing

8 0

4 years ago

Triangle N P O is shown. Line O N extends through point M to form exterior angle P N M. Angle N P O is 38 degrees. Angle P O N i

Brilliant_brown [7]

Answer:

Step-by-step explanation:

5 0

3 years ago

The difference of 10 and a number w is no more than 8

Tpy6a [65]

Answer:10-w<u>< </u> 8

Step-by-step explanation:

8 0

3 years ago

What is 1/3 + a = 5/4

Oliga [24]

Answer:

A=11/12

Step-by-step explanation:

1/3+a=5/4

1/3+a-1/3=5/4-1/3

1/3+a-1/3

5/4-1/3 11/12

8 0

3 years ago