Answer:
1.) Yes
2.) Yes
Step-by-step explanation:
Given that
n = k(k + 7)
If k is a positive integer and n = k(k + 7), is n divisible by 6 ?
(1) k is odd. Yes.
Let assume that k = 3
Then, n = 3(3 + 7)
n = 3 × 10
n = 30.
30 is divisible by 6.
(2) When k is divided by 3, the remainder is 2. That is,
Let k = 5
Then,
5/3 = 1 remainder 2
Substitute k into the equation
n = k(k + 7)
n = 5(5 + 7)
n = 5 × 12
n = 60
And 60 is divisible by 6.
Therefore, the answer to both questions is Yes.
Area of full circle= πr^2
Area of a quadrant= πr^2/4
=(3.5)^2π/4
=12.25π/4
=3.06πcm squared.
Step-by-step explanation:
c = 10
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Answer: -2a,-2b
Step-by-step explanation:
Answer:
3 cm
Step-by-step explanation:
The formula for the area of a circle is:
Where "r" represents the radius of the circle. We can substitute the given value for Area into the equation to solve for the radius.
<h3>Solve for Radius</h3>
Divide both sides by π
Take the square root of both sides
The radius of the circle is 3 cm.
