What is the area of the trapezoid shown? (1) angle a = 120 degrees (2) the perimeter of trapezoid abcd = 36?
1 answer:
You might be interested in
Answer:
90 g of water should be added and he will make 900 g of solution.
Step-by-step explanation:
Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,
810+x - 100%,
x - 10%.
Mathematically,
So 90 g of water should be added and he will make 810+90=900 g of solution.
Answer: Choice A
=======================================================
Explanation:
The pythagorean theorem is
The value of c is always the longest side, aka hypotenuse.
The order of 'a' and b doesn't matter.
So a = 14, b = 48, c = 50
We have
We also have
Both sides result in 2500 which proves that is a true statement. Therefore, we do have a right triangle.