Is 3a a term for expressions
1 answer:
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Answer:
The approximate circumference is 62.8 mm
Step-by-step explanation:
Circumference is basically the perimeter of the circle
Circumference is given by
Here the diameter is 20 mm, so the radius will be half of diameter = 10 mm
Substituting the given values, in above equation, we get -
Circumference =
mm
The approximate circumference is 62.8 mm
Answer:
$51.50
Step-by-step explanation:
<em>Let the amount that Phil give to her sister be </em>
<em><u>After Phil's sister pays her debt of 10, Phil and her sister should have EQUAL amount. </u></em>So we can write the equation as:
Now solving this for x, we have:
Hence, Phil must give $51.50 to her sister.