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The probability they wear glasses is 3/7, which means the probability they don't is 1-3/7=4/7. This means 164 students make up 4/7 of the school. To find the number that wear glasses we need to find how m...
Differentiate equation
dy/dx=0.5*x-0.5
Gradient is the same as the second equation
2/3=0..5*x-0.5
Solving this ...
(2+3√2, 0) and (2-3√2, 0)
(3*4)(4x+9)^(3-1)
Where 4 is the derivative of inside the brackets and 3 is the power of the brackets.
Therefore the answer is 12(4x+9)^2
(a) For part a, simply add the real terms together and the imaginary terms together. z1+z2 = (3+2i)+(4-i) = 7+i b).
(b) For part b, multiply the brackets out, remembering...
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