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Darya [45]
3 years ago
8

Will give you brainly if you answer this

Mathematics
2 answers:
Bingel [31]3 years ago
8 0
It is the third one c
klemol [59]3 years ago
5 0
It’a the third , and can I have the brainliest too
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The coordinates of triangle GBW are G (20, 10) B (-35, 20), and W (5,-10). Is GBW a right triangle? Justify your answer.
Artist 52 [7]
We know from Pythagoras' Theorem, a right angle triangle can be identified by the relationship:

a^2+b^2=c^2

Thus, we know if the side lengths of the triangle in question abide by this relation, the triangle is right.

First, we must find the greatest side length.

We know, using the distance formula.

GB= \sqrt{(-35-20)^2 +(20-10)^2} =\sqrt{3125}
BW= \sqrt{(5+35)^2 +(-10-20)^2} =\sqrt{2500}
WG= \sqrt{(20-5)^2 +(10+10)^2} =\sqrt{625}

From this, we know that:
GB\ \textgreater \ BW\ \textgreater \ WG
Therefore, GB would be the hypotenuse of the triangle.
Now we substitute the values for the two shorter lengths and the greater length into the pythagorean theorem:
a^2+b^2=2500+625=3125
c^2=3125
\therefore LHS=RHS
Therefore, this triangle is a right angled triangle

6 0
3 years ago
20. Which of the following is the correct first step to solve 5x2 – 20x = -15 by completing the square?
kherson [118]

Answer:

20. Which of the following is the correct first step to solve 5x2 – 20x = -15 by completing the square?

O Divide all terms by 5.  this is the answer

O Divide all terms by -5.

Add 15 to both sides.

Add 100 to both sides.

5%

Step-by-step explanation:

3 0
4 years ago
What is the theoretical probability of spinning green on the spinner below?
lukranit [14]

Answer:

1/4

Step-by-step explanation:

There are three green  parts and twelve total colored parts.

3/12= 1/4

4 0
3 years ago
Read 2 more answers
What is m∠D ?
Aleksandr [31]
All triangles have angles that add up to 180, so we can take the top triangle, which has angles 14, 45, and x, and say they add up to 180, so 180-14-45=x and x = 121. For E, all angles that look like that and have opposite angles, then these opposites are equal, so both sides of E are 121. then we use the bottom triangle to solve for D with the fact that all triangles' angles add to 180 again. 180-27-121 = D, so D=32
3 0
4 years ago
Read 2 more answers
Please help<br> find BC in this
ryzh [129]
<span>Which angle do you want?</span>
4 0
4 years ago
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