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GarryVolchara [31]
3 years ago
7

Geometry Question find the area of the circle

Mathematics
2 answers:
olasank [31]3 years ago
8 0
Formula for the area of a circle is Pi*radius squared
So, we do Pi*2^2 which is 12.57
Phoenix [80]3 years ago
3 0

Answer:

4π cm²

Step-by-step explanation:

The radius of this circle is half the diameter, that is, half of 4 cm, or 2 cm.

Then the area of the circle is A = πr²  =>  A = π(2 cm)² = 4π cm²

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You and a friend play a game where you each toss a balanced coin. If the upper faces on the coins are both tails, you win $2; if
Kipish [7]

Answer:

E(Y) = $0.5

Var(Y)  = 14.25

you should pay the same amount  $0.5

Step-by-step explanation:

E(Y) =  = Σ(YP)

P = probability of each outcomes.

Var(Y) = ΣY^{2}p − (μ x μ)

E(Y) = (2 x 0.25) +(6 x 0.25) + (0.5 x (-3)) = $0.5

Var(Y) = (2^{2}\\x 0.25) + (6^{2} x 0.25) +(-3^{2} x 0.5) - (0.5^{2})

       = 14.5 - 0.25

Var(Y)  = 14.25

for the difference between the payoff and cost of playing to have mean 0, you should pay the same amount  $0.5

3 0
3 years ago
The question is below, please help
Alisiya [41]
Im gonna go ahead and say it is 25



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7 0
3 years ago
Completely factor 1-100x^2​
stiv31 [10]

Answer:

Since both terms are perfect squares, factor using the difference of squares formula,  a 2 − b2 = ( a + b ) (a − b )  where  a= 1  and  b = 10 x . ( 1 + 10 x ( 1 − 10 x )

Step-by-step explanation:

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2 years ago
Why is 4/0 a irrational number
Arte-miy333 [17]

Answer:

In the question 4/0, the denominator is zero so it is not a rational number.

7 0
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Answer:

Your account balance is the total amount of money that is currently in your account, including any pending transactions (e.g., debit card purchases that have not cleared). ... You should always use the available balance to determine how much money you have available for purchases and withdrawals.

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