1/5 (150x - 80y + 50 - 50x - 25y + 20) = 20x - 21y + 14
what I did is combined the like terms and multiplied each term within the parenthesis by .2
Answer:
The circle's diameter is 
Step-by-step explanation:
we know that
The circumference of a circle is equal to

where
D is the diameter of the circle
In this problem we have


substitute the values and solve for D


Answer:
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Step-by-step explanation:
SALLY SOLD SHINEY SSEA SHELLS BY THE SHINY SEA SHIRE
Yes he is right because the triangle has a 90 degree angle in the corner making it a right triangle