exam
Maths Puzzle
Numerical Ability
Masonry:
A 20ft ladder leans against a building at a 65 degree angle with the ground. Will it reach a window 17 ft above the ground?
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exam Other Question
write the system of linear equations represented by the augmented matrix. Use x,y,z and if necessary w,x,y,z for the variables.
|4 1 5 1| 6|
|1 -1 0 -1| 8|
|3 0 0 7| 4|
|0 0 11 5| 3|
Solve the equation.
y 2 - 15 y + 44 = 0