Answer:
50.24²
Step-by-step explanation:
Okay, so the formula for the area of a circle is π x radius² and we're just going to use 3.14 for π so:
We first have to find the radius, the radius is half the diameter:
8 ÷ 2 = 4
So 4 is our radius
4² = 16
3.14 x 16 = 50.24
So, the area of the circle is 50.24²
hope this helps:)
Answer provided by our tutors
In millimeters, the fish is 25/10 centimeters.
25-(25/10)
22.5
The difference between the guinea pig and the fish is 22.5 centimeters.
Answer:
(x - 7)(x + 3) = 0
Step-by-step explanation:
To factorise the quadratic
Consider the factors of the constant term (- 21) which sum to give the coefficient of the x- term (- 4)
The factors are - 7 and + 3, since
- 7 × 3 = - 21 and - 7 + 3 = - 4, thus
(x - 7)(x + 3) = 0 ← in factored form
Sampling bias occurs when some members of a population are systematically more likely to be selected in a sample than others. From this definition,
For sample 1, Every fifth person who enters Little Casesars Arena for a Red Wings game. This is not biased because no person is more likely to be selected than another
For sample 2, Every tenth name in the phone. This is also not biased
because no person is more likely to be selected than another