Answer:
<u>height</u><u>,</u><u> </u><u>x</u><u> </u><u>is</u><u> </u><u>2</u><u>3</u><u>5</u><u> </u><u>ft</u>
Step-by-step explanation:
From trigonometric ratios:

but:

adjacent is x
hypotenuse is 400 ft

Answer:
The triangle should be 16 inches wide.
Step-by-step explanation:

What we know:
- One of the legs measures 12 inches.
- The hypotenuse is 20 inches.
We need to solve for b. Solving for a while b is 12 would also be acceptable.

We will use the first equation.


The triangle should be 16 inches wide.
A polynomial function with all even exponents is so-called even function.
Even functions are symmetric across the y-axis.
Answer: Only one that is symmetric across the x-axis is the function C ).
X= 135 and Y = 15. Hope that helps!
Answer:
Step-by-step explanation:
Given that *is the binary operation in the sets of integers.

closure: a-b+ab is again an integer belongs to Z. Hence closure is true.
Associativity: 

The two are not equal. Hence this cannot be a group as associtiavity does not hold good.