Question

12y+15x=240
find the value of x if y =10​

Answer 1

Step-by-step explanation:

(x^3+5*x+2*x^2+10)/(x+2) ... Variation - If 5x-7y prop 6x+3y then prove that x prop y. 70. ... Ratio and proportion - if geometric mean 18 and x is 12, find value of x. 132.

Answer 2

$12y + 15x = 24 \\ \\ y = 10 \\ \\ 12 \times 10 + 15x = 240$

$120 + 15x = 240 \\ \\ 15x = 240 - 120 \ \\ \ \\ 15x = 120 \\ \\ x = 120 \div 15$

$x = 8$

these answer correct