Can someone help me please​

the answer to this question is 4.4

4.4

Step-by-step explanation:

We will use Pythagorean Theorem to find the remaining side.

Since the hypothenuse (10) is already found, we will do this a little more unconventionally.

9²+x²=10²

x Represents the missing side.

81+x²+100

x²=19

x≈ 4.4

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

jbjuiuhuhuuy