Lets call the number 'n'
plus means addition
is means the equal sign
so that as an expression would be

n+4=7
Answer:
4in = r
Step-by-step explanation:
Different problem if the x was a variable in the question
formula for area of circle = pi x r^2.
So if the area of a circle is 16 pi in^2, it would be an obvious estimate that the radius is the square root of 16 which is 4 inches.
If the x was a variable, you would find the square root of 16x which is
which would make it 4
as the radius.
-8-5b+7+5b
add +5b to -5b to get 0.
-8+7 = -1
Answer is -1.
Answer:
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Step-by-step explanation: