Year8 Maths(Angles) Help me plz!!
1 answer:
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Answer:
3
Step-by-step explanation:
Pepper Jackie has 12 picks, 1 out of every 4 pick is orange and the rest are green.
So there could be three groups of 4 each and in each group there is 1 orange.
There are 3 groups of 4 each that makes 12 ()
Now, in each group there is 1 orange, so in three groups there will be
orange.
1 for each group.
Answer:
x = - 1, x = 7
Step-by-step explanation:
Given
x² - 6x = 7
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 3) x + 9 = 7 + 9
(x - 3)² = 16 ( take the square root of both sides )
x - 3 = ± = ± 4
Add 3 to both sides
x = 3 ± 4, that is
x = 3 + 4 = 7 or x = 3 - 4 = - 1