Answer: A three-sided polygon is a triangle.
There are several different types of triangle (see diagram), including: Equilateral – all the sides are equal lengths, and all the internal angles are 60°. Isosceles – has two equal sides, with the third one a different length.
Step-by-step explanation:
Answer:
2x-3y=8
2(x+y)=8
x+y=8/2
x+y=4 ????
4x+2y-10= 2(2x+y-5)
Step-by-step explanation:
im not sure
Answer:
456 chairs
Step-by-step explanation:
If there are 6 round tables with 7 chairs each you would multiply 7, 6 times (7 x 6) = 42
If there are 23 rectangular tables with 18 chairs each you would multiply 18, 23 times. ( 18 x 23) = 414
Then you add up all the chairs, 456 chairs total.
If I'm wrong I'm so sorry
if I'm right Thank you (brainliest plz)
<span>(-9,0);(9,0);30
one of these is it: x^2/15 + y^2/12 =1 or x^2/225 +
y^2/144 =1
or x^2/15 - y^2/12 = 1</span>
Answer:
14 feet
Step-by-step explanation:
The height of the plywood is in two parts, the part that is a side of the right triangle (h - 2) and the 2 feet that is an extension of that side.
One can find (h - 2) with the Pythagorean theorem which states that the sum of the squares of the two legs of the right triangle is equivalent to the square of the hypotenuse. (if the legs were of length a and b and the hypotenuse was of length c, then they could be in the formula 
.
Then this means that you can input the values in the equation so that it appears as: 
. If you solved this equation, you would get that (h - 2) is 12 and when you add 2 to get the total length of h, you would get 14 feet as the total height of the plywood.
Hope that helps : )
