What formula can i use to find the area of the base with the height of the pyramid being 7 and the triangle base height being 6 and width 9

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Bring the fraction a/a-4 to a denominator of 16-a^2

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle