Answer:
Good. I don't like the school that is a part of the day but other than that life is awesome.
Step-by-step explanation:
(-8.6)+7.2= -1.4
Think of it as 8.6-7.2 and carry down the negative sign.
Answer:
can u clarify bc area is 2 but 4 things is perimiter
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
, start by squaring both sides to work towards isolating
:

Recall
and
:

Isolate the radical:

Square both sides:

Expand using FOIL and
:

Move everything to one side to get a quadratic:

Solving using the quadratic formula:
A quadratic in
has real solutions
. In
, assign values:

Solving yields:

Only
works when plugged in the original equation. Therefore,
is extraneous and the only solution is 
Answer:
the answer is (R-7)÷5
Step-by-step explanation:
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