Answer: x = 6.56
Step-by-step explanation: -0.4x - 0.5 + x = 3.63
-0.4x^2 - 0.5 = 3.63
-0.4x^2 = 4.13
0.63x = 4.13
x = 6.56
Answer: 48.97
Step-by-step explanation:
Answer:
they are -6 and -7
Step-by-step explanation:
Answer: 147 square feet.
Step-by-step explanation: 7x7x3= 147 square feet.