A fair coin is flipped 11 times exactly 9 are tails
1 answer:
The probability of having tails is 9/11
Data;
- N = 11
- tails = 9
This is the possibility of an event occurring. In a sample space of 11 coin flips, tails came up 9 times and head came up 3 times
Number of time head came up =
The probability of having tails is calculated as
The probability of having head is calculated as
The probability of having tails is 9/11
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Answer:
Step-by-step explanation:
Give the expression ax – c = bx + d, we are isolate x i.e we are to make x the subject of the formula.
ax – c = bx + d
Step 1: subtract bx from both sides
ax – c = bx + d
ax-bx = d+c
Step 2: Factor out x in the left hand side of the resulting expression
x(a-b) = d+c
Step 3: Divide both sides by the coefficient of i.e (a-b)
Hence Victoria can justify the step 3 of her work by dividing both sides of the expression in 2 by a-b