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Paha777 [63]
3 years ago
7

If the area of a circle is 81π, then what is the diameter of the circle?​

Mathematics
1 answer:
viva [34]3 years ago
7 0

Answer:

18

Step-by-step explanation:

81π=πr^2

r= 9,-9

9+9=18

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The revised Daily Value for calcium is 1,300 mg per day. How many servings of this food would you have to eat to get 100% DV for
Ne4ueva [31]

Answer:

Taking into account the values showed for this food (image attached). It is required

5  

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Step-by-step explanation:

The total calcium (Cat) required is 1300 mg/day.  

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First step is to suppose one day of calculation. t = 1 day.

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4 years ago
(a^3+a^2b/5a)(25/3b+3a)
zheka24 [161]

Answer:

\frac{5a}{3}

Step-by-step explanation:

The given expression is;

(\frac{a^3+a^2b}{5a})(\frac{25}{3b+3a} )

Factorize;

(\frac{a^2(a+b)}{5a})(\frac{25}{3(b+a)} )

Cancel out the common factors;

(\frac{a(1)}{1})(\frac{5}{3(1)} )

Simplify;

\frac{5a}{3}

5 0
3 years ago
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Korolek [52]
Your answer is:

a. y=5
7 0
3 years ago
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