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Answer:
n+4=12
n=12-4
n=8
Step-by-step explanation:
hope it helps
Answer:
d) 87
Step-by-step explanation:
to solve this lets set up the equation

then we multiply 4 on both sides
253+x=340
and subtract 253 on both sides
x=87
to double check take the averages
(87+85+70+98)/4=85
Answer:
Answer is 18 degrees.
Step-by-step explanation: