This is worth 4 marks
1 answer:
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Answer:
28x + 30
Step-by-step explanation:
Look at the picture*
Answer:
see explanation
Step-by-step explanation:
Given
x² - 2x - 4 = 0 ( add 4 to both sides )
x² - 2x = 4
To solve use the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 1)x + 1 = 4 + 1
(x - 1)² = 5 ( take the square root of both sides )
x - 1 = ± ( add 1 to both sides )
x = 1 ± , thus
x = 1 + or x = 1 -
Answer:
0.7
Step-by-step explanation:
The matrix of possibility is given by the table below
Therefore the proportion of time Buffy is cheerful is 0.7
