Answer:
1: 2.5
2: 3
3: 4
4:5
just answered and said I was right
Step-by-step explanation:
Im sorry Idk




Now if

, then both

and

. Adding two positive numbers gives another positive number, so

. Why this is useful will be apparent shortly.
Back to the identity:

Factorizing the left hand side, we have

Now, any number squared will be positive, which means the right hand side is necessarily greater than 0.
We showed earlier that

. So we understand that we have

The only way to multiply a number by a positive number to get yet another positive number is to have the first number also be positive, which means

and from this it follows that

in the provided region.
Answer: this relation is a function because each x value only has one y value.
1. Substitute the function f(x) into x in g(x)
2. Simply your results in 1. now you have (g o f)(x)
3. Now substitute 6 into your results in 2 to get (g o f)(6)
A = 1/5
d = T2-T1
d = 1/10 - 1/5
d = 1/10 - 2/10
d = - 1/10
T4 = 1/5 + 3(-1/10)
= 1/5 - 3/10
= 2/10 - 3/10
= - 1/10