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3 years ago

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Triangle ABC has vertices of A(-8,8),B(6,2),C(-2,1).Find the length of the median from C in triangle e abc

1 answer:

jekas [21]3 years ago

8 0

First find midpoint of AB and lastly find the length of midpoint and C

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Plz help with math thank you

Delicious77 [7]

Answer:

Step-by-step explanation:

Law of Sines recall Sin(A) /a = Sin(B) /b

does the above make sense?

Next we need to find the angle of A

notice that 16+75=91 :o

so angle A is only 89° ..(b/c all the way around then inside of a triangle is 180) so this is NOT a right triangle but that's okay, b/c law of sines still works fine.

then we want to find length of line AB

and if 89 = A then a = BC

and if 75 = B the b = AB (note that in the given triangle this is angle C, i'm using B , b/c you can see the difference between capital B and lower case b much easier than you can with C, & c :/ )

capitals are the angles while lower case are the length of the sides

then

Sin(89) / 29 = Sin(75) / b

solve the parts that can be put into numbers or solve for 'b' first, that means isolate 'b' all by itself on one side of the equal sign .

0.034477 = 0.965925/ b

b = 0.965925 / 0.034477

b = 28.0165

b = 28.0 ( to the nearest 10th)

we have the parts to plug in now

Sin(75) /

8 0

3 years ago

Y= - x+2 Y=3x-4<br> Estimate the solution to the system of equations

IrinaVladis [17]

Answer:

$x=\frac{3}{2}\\ y=\frac{1}{2}$

Step-by-step explanation:

$y=-x+2\\y=3x-4$

Let's solve one of them for x.

$y=3x-4$

Add 4

$y+4=3x$

Divide by 3.

$x=\frac{y+4}{3}$

Now, plug the value of y in the formula, or you can plug the value of x in the other equation. I'll take this one.

$x=\frac{y+4}{3}$

$x=\frac{(-x+2)+4}{3}$

$x=\frac{-x+2+4}{3}$

$x=\frac{-x+6}{3}$

Multiply by 3 to get rid of the denominator.

$3x=-x+6$

add x

$3x+x=6$

Combine like terms;

$4x=6$

Divide by 4.

$x=\frac{6}{4}$

Simplify.

$x=\frac{3}{2}$

Now that you found the value of x, replace it in any of the equations to find y.

$y=-x+2\\y=-(\frac{3}{2})+2\\ y=-\frac{3}{2}+2$

$y=\frac{-3+2*2}{2} \\y=\frac{-3+4}{2} \\y=\frac{1}{2}$

Proof:

$y=3x-4\\\frac{1}{2}=3(\frac{3}{2})-4\\\frac{1}{2}=(\frac{9}{2})-4$

$\frac{1}{2}=\frac{9-4*2}{2}$

$\frac{1}{2}=\frac{9-8}{2}$

$\frac{1}{2}=\frac{1}{2}$

8 0

4 years ago

An auto parts chain asked customers to complete a survey rating the chain's customer service as average, above average, or below

Mandarinka [93]

Answer:

The right answer is "0.33".

Step-by-step explanation:

As per the question,

n = 15

Average will be "x = 5"

Now,

The required proportion will be:

⇒ $p=\frac{x}{n}$

By putting the values, we get

⇒ $=\frac{5}{15}$

⇒ $=0.33$

Thus, the above is the appropriate solution.

8 0

3 years ago

This shaded shape is made using two semicircles. One semicircle has a diameter of 20cm. The other has a diameter of 30cm.

alexandr1967 [171]

Answer:

25

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

One number is five more than another and their sum Is 13 find the numbers

solong [7]

The numbers are 8 and 13

5 0

2 years ago