Answer:
4.39%
Step-by-step explanation:
There are no marking to identify the coins, so the order is not important. Since the order not important we use combination instead of permutation.
A coin have 2 possible outcome, head or tails. Assuming the coin is fair each outcome will be 50% or 0.5 chance. If heads= A and tails =B, then the probability of 2 pennies will be:
P(A=2) = 2C10 * A^2 * B^(10-2)
P(A=2) = 10*9/2 * 0.5^2 * 0.5^8
P(A=2) = 0.0439= 4.39%
Answer:
1. 4(10+8) 40+32=72
2. 5(15*3-2) 5(45-2) 225-10=215
Step-by-step explanation:
Slope = ( 7+2)/(0 - 8) = -9/8
b = 7
equation
y = -9/8 x + 7
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(-2,0)(0,-2)
slope = (0 +2)/(-2 - 0) = -1
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y = -2x
x = 0 y = 0
x = 1 y = -2
x = -1 = 2
use these 3 coordinate points to graph it
