exam Maths Puzzle Numerical Ability

find out 3 irrational numbers between 5/7 and 9/11/

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exam Other Question

Write an equation of the line containing the given point and perpendicular to the given line.

(3,-6);5x+2y=9
Can someone please help me with this.
can someone please help me with this problem:

Which of the following is a line perpendicular to y = 1/2x + 4 ?

a. y = 1/2x - 1/4
b. y = 2x - 4
c. y = 2x - 1/4
d. y = -2x