A greenhouse owner wants to test the effectiveness of a new fertilizer on African violets. She has 60 violet
1 answer:
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Answer:
Step-by-step explanation:
The slope of line l is
Since parallel lines have the same slope, the slope of the line we need to find is -2.
Substituting into point-slope form,
Answer:
sin2θ =
Step-by-step explanation:
Since, sin2θ = 2sinθcosθ
From the triangle given in the picture,
Opposite side of angle θ = 2 units
Adjacent side of angle θ = 3 units
Hypotenuse = =
[By Pythagoras theorem]
sinθ =
=
cosθ =
=
sin2θ =
=
Answer:
4
Step-by-step explanation:
Simplify x and y by rationalising the denominator of both
To rationalise the denominator multiply the numerator/ denominator by the conjugate of the denominator.
The conjugate of 2 + is 2 -
The conjugate of 2 - is 2 +
x = =
= 2 -
y = =
= 2 +
Thus
x + y = 2 - + 2 +
= 4