Answer: 390
Step-by-step explanation:
Answer:
The answer is 3x^2-4x-4+1/2x-1
Step-by-step explanation:
Hope this helps, and sorry if it's wrong.
Solving
we get 
Step-by-step explanation:
We need to find the value of a. We are given:

Solving:

So, Solving
we get 
Keywords: Solving Expressions
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it's a right triangle so you use Pythagoras' theorem.
√28²-14²=
√784 - 196 =
√588
24.24 units (rounded 24.25)
your answer is 24.25 units