Please helppppp the thing has to be 20 characters long soooo how was your day today?? Good, bad? I hope it was good!
1 answer:
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Answer:
<h2>2(a + 2b)</h2>Step-by-step explanation:
When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression.
Collect like terms
Factor out 2 from the expression
Hope this helps...
Good luck on your assignment..
Answer:
r=1/π
Step-by-step explanation:
Area of the circle is defined as:
Area = πr²
Derivating both sides
=2πr
=
x
= 2πr
If area of an expanding circle is increasing twice as fast as its radius in linear units. then we have : =2
Therefore,
2πr = 2
r=1/π