The given system of equations has only one solution
<em><u>Solution:</u></em>
Given system of equations are:
2y = x - 9 ------- eqn 1
5x - 4y = 18 ------- eqn 2
<em><u>Let us first solve the system of equations</u></em>
From eqn 1,
x = 2y + 9 ----- eqn 3
<em><u>Substitute eqn 3 in eqn 2</u></em>
5(2y + 9) - 4y = 18
10y + 45 - 4y = 18
6y = 18 - 45
6y = -27
<em><u>Substitute the value of "y" in eqn 3</u></em>
Thus 
Thus the given system of equations has only one solution
Just find the surface area. 5*7=35, but 35*2=7<span>0</span>, because the top and bottom. Then do 7*3*2=42, for 2 parallel sides, and then 3*5*2=30. Now add 70+30+42=142 square inches. There's your answer.
The Leading Coefficient Of The Polynomial Is -6
Average rate = [h(3) - h(0)]/(3 - 0)
h(3) = 300 - 16(3)^2 = 300 - 16(9) = 300 - 144 = 156
h(0) = 300 - 16(0)^2 = 300
average rate = (156 - 300)/3 = -144/3 = -48
Therefore, the object falls with an average rate of 48 ft/s during the first 3 seconds.
Answer: Infinitely many solutions.
Step-by-step explanation:
