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3 years ago

If A=(3,2) and B=(5,7) be two points , find the unit vector along BA

1 answer:

5 0

If we were to plot the points on a graph, we could draw a straight lint between them. The question wants us to find the length of this line. We could make a right triangle with this line as the hypotenuse, with an x length of 2(y2-y1) and a y length of 5 (y2-y1). From there we can find the hypotenuse with Pythagorean Theorem: c^2=a^2+b^2.
c^2=(2)^2+(5)^2
c^2=4+25
C^2=41
c= $\sqrt{41}$
Decimal approximation: 6.403

Hope this helps!

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What is the answer to this

bekas [8.4K]

Formula:
$a {}^{2} + {b}^{2} = {c}^{2}$
Plug in 21 for a, plug in 72 for b.
${21}^{2} + {72}^{2} = {c}^{2}$
Then you would get:
$441 + 5184 = {c}^{2}$
Then add 5184 and 441
$5625 = {c}^{2}$
Square root it.
and you'll get

$75 = c$
I hope this helps

4 0

3 years ago

Show all your work to receive credit!<br><br> What is m∠KNLm∠KNL?<br><br> Question 2 options:

Nataly_w [17]

3(x+14) i think thats it

8 0

3 years ago

What is the value of the y-intercept of the graph of f(x) = e^1-x – 1?

ra1l [238]

Answer:

(0, e-1) or (0, 1.718) to the nearest thousandth.

Step-by-step explanation:

The y-intercept occurs when x = 0 so here we have:

y = e^(1 - 0) - 1

= e - 1

So the y-intercept is the point (0, e-1)

5 0

3 years ago

Can someone help me, please I've been getting so many wrong if you get it right I'll give brainiest

Len [333]

<YWX=30°; YX=80÷2=40

WX²+40²=80²

WX²=6,400-1,600

WX=√4,800=√(4×4×4×25×3)=40√3

7 0

3 years ago

Use z scores to compare the given values.

Effectus [21]

Answer:

The answer is given below

Step-by-step explanation:

Z score is used to measure by how many standard deviations the raw score is above or below the mean. It is given by the formula:

$z=\frac{x-\mu}{\sigma}\\ \\Where\ \mu=mean, x=raw\ score, \sigma=standard\ deviation$

For the male:

μ = 3259.8 g, σ = 869.7 g

Hence for a male who weighs 1600 g, the z score is:

$z=\frac{x-\mu}{\sigma} =\frac{1600-3259.8}{869.7}=-1.91$

For the female:

μ = 3000.9 g, σ = 550.8 g

Hence for a female who weighs 1600 g, the z score is:

$z=\frac{x-\mu}{\sigma} =\frac{1600-3000.9}{550.8}=-2.54$

Since the z score for the male is z= -1.91 and the z score for the female is z= -2.54 the male has the weight that is more extreme.

6 0

3 years ago