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Find the equation of the straight line perpendicular to 3x+5y+6=0 that passes through (3,4)

First we need to write the equation in the form y = mx + c 3x + 6= 5y (3x+6) / 5 = y -3/5x + 6/5 = ynow we know that the gradient is -3/5 therefore the perpendicular gradient is 5/3.so our line equation is 5...
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Simplify the expression 5x + 6y -4x+ 7y

x+ 13y
Answered by • Maths tutor
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This rectangle is twice as long as it is wide. The perimeter of the rectangle is 30cm. What is the area?

50cm 2
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Answered by Sammy B. • Maths tutor
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Write the missing numbers on the lines.

76 + 84 = 160 36+ 54 = 90
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Answered by Sammy B. • Maths tutor
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Prove that 2^(80)+2^(n+1)+2^n is divisible by 7 for n belongs to the natural number.

We will prove that 2^(n+2)+2^(n+1)+2^n is divisible by 7 using formula to multiply powers with the same base:a^(b) * a^(c) = a^(b+c)Now looking at our expression we can write:2^(n+2) + 2^(n+1) + 2^n = 2^n * ...
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