Find the height of the triangle by applying formulas for the area of a triangle and your knowledge about triangles. A. 10.5 cm
B. 3.4 cm
C. 8.5 cm
D. 12 cm

Solving algebraic equations 2m+3=11

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

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?