z = 3x + 5y, if x = 7 and z = 41, what is 2y?

z = 3x + 5y 41 = 3(7) +5y 41= 21 + 5y 20 = 5y 4 = y y = 4 2y = 8

HA

Related Maths GCSE answers

All answers ▸

How do you factorize a quadratic equation which has a coefficient of x^2 other than 1?


find the roots of the equation 7x^2+11x-2=0 in exact form


Find all three roots of the cubic: 2x^3 +5x^2 - 22x +15=0.


Differentiate y = e^(2x)cos(3x)