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evablogger [386]

3 years ago

12

Write an equation in point-slope form of the line that passes through the given points, then write the equation in slope-interce

pt form.
(-12,8). (3,3)

1 answer:

svetlana [45]3 years ago

4 0

Answer: in point slope form, the equation would be:

(y-8)=-1/3(x+12)

in slope-intercept form, the equation would be:

y=-1/3x+4

hope this helps! :)

Step-by-step explanation:

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Whats the slope of a line that passes through (-5,4) and (4,15)

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Answer:

1.22222

Step-by-step explanation:

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3 years ago

What’s the measure of angle XYZ?

Murrr4er [49]

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4 years ago

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Given |u| = 10 at ∠135° and |v| = 5 at ∠30°, what expression can be used to find |u + v|?

astraxan [27]

Answer:

B, $10^{2} + 5^{2}- 2(10)(5)cos(75)$

Step-by-step explanation:

Using the law of cosines, which is $c^{2}=a^{2}+b^{2}-2ab cos(C)$ , you can simply insert all the values.

c=|u+v|

a= r value of u (10)

b= r value of v (5)

To find C, you simply have to subtract v from u, and then subtract that number from 180 to find the reference angle.

I.E.: ∠135 - ∠30 = ∠105 ↔ 180 - 105 = 75 = C

so, the completed equation would be 10^{2} + 5^{2}- 2(10)(5)cos(75)

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3 years ago

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