Answer:
17.4 ina
Step-by-step explanation:
Area of circle = πr²
Where r = radius, π = 3.142 , A = 240.251 ina
A = 3.142 x r²
3.142 r² = 240.251
Divide both sides by 3.142
r² = 240.251/3.142
r² = 76.464
Square root both sides
r= √76.464
r= 8.7
Radius = 8.7 ina
Note : Diameter = 2 x radius
Diameter = 8.7 x 2
Diameter = 17.4 ina
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Answer:
1)
2)
3) False
4)
5) False
Step-by-step explanation:
Given that:
and
Formula:
1) Using above formula:
2)
Rewriting the formula by distributing the term:
3) By using answers of part (1):
Therefore it is <em>False </em> that
4)
Writing by distributing:
Using the formula:
(5)By using answers in part (1):
Therefore, it is <em>False </em>that:
Answer: A) 82.3
Step-by-step explanation:
Mean= average
To find mean, you add up all the numbers and divide by the number of numbers.
In this case you do:
(81+78+83+89+80+87+78) ÷ 7
81+78+83+89+80+87+78
=576
Now, divided by 7
576 ÷ 7
= 82.2857142857
Round to nearest tenths place
= 82.3
-12 because -8+(-4) = -8 - 4= -12.