Simplify: 4(x + 3) + 6x

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The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?