exam Maths Puzzle Numerical Ability

for the input-output matrix A, find the output required to meet the demand D:

A=0.2 0.4
0.3 0.6


D=700
400

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exam Other Question

2) For the function y = x2 - 4x - 5, perform the following tasks:
a) Put the function in the form y = a(x - h)2 + k.


b) What is the line of symmetry?


c) Graph the
please help me

Add

4 + c/4y^2

Thank you!