Answer:
x = 8
Step-by-step explanation:
As the triangle has 2 congruent angles, this means that their corresponding sides are of equal measure.
Therefore, -4 + 2x = 12
Add 4 to each side: 2x = 16
Divide both sides by 2: x = 8
Answer:
a. height = 12
b. area = 228
Step-by-step explanation:
a. To find the height, we can use the triangle formed by the side that measures 15, the side that measures 9. and the height. The hypotenuse of the triangle(the longest side opposite of the right angle), is 15. We can then use the Pythagorean Theorem, which states that 
, where c is the hypotenuse, and a and b are the two other sides. In this case, we need to find a leg of the triangle, not the hypotenuse. What do we do? We can first call the height a, and rearrange the Theorem into 
. 
and 
=12. Therefore, the height of the parallelogram is 
b. To find the area of the parallelogram, we can use the area formula, which is Base*Height. The base is the flat side. We can find the base by adding 9+10=19, and 
53.1
Step by step explanation This is how I got the answer to your question and I gave you the solution I hope this helps you out
I believe that the answer is B
9514 1404 393
Answer:
4. (4, 5)
Step-by-step explanation:
Use substitution to put the value for y in the second equation.
-3x +4(5) = 8
-3x = -12 . . . . . . . subtract 20
x = 4 . . . . . . . . . . divide by -3
The solution is (x, y) = (4, 5).
