Answer:
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Step-by-step explanation:
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9514 1404 393
Answer:
y = 2
Step-by-step explanation:
The variable x can be eliminated by subtracting the first equation from the second.
(-x +4y) -(-x -y) = (15) -(5)
5y = 10 . . . . . . . simplify
y = 2 . . . . . . . . . divide by 5
Just work backwards.
342.5/ 34.25 = 10
Answer:
the answer of your question is B
Answer:

Step-by-step explanation:
*Notes (clarified by the person who asked this question):
-The triangle on the right has a right angle (angle that appears to be a right angle is a right angle)
-The bottom side of the right triangle is marked with a question mark (?)
<u>Triangle 1 (triangle on left):</u>
Special triangles:
In all 45-45-90 triangles, the ratio of the sides is
, where
is the hypotenuse of the triangle. Since one of the legs is marked as
, the hypotenuse must be 
It's also possible to use a variety of trigonometry to solve this problem. Basic trig for right triangles is applicable and may be the simplest:

<u>Triangle 2 (triangle on right):</u>
We can use basic trig for right triangles to set up the following equations:
,

We can verify these answers using the Pythagorean theorem. The Pythagorean theorem states that in all right triangles, the following must be true:
, where
is the hypotenuse of the triangle and
and
are two legs of the triangle.
Verify 