Answer:
10
Step-by-step explanation:
40=2a<u>-3</u>+2a+3a<u>+1</u>
add like terms
get 'a' by its self
- 40(+2)=7a<u>-2(+2)</u> [2 cancels out]
- 42(÷7)=7a(÷7) [7 cancels out]
- a=6
plug in the answer for Equations
- biggest: 3(6)+1= 18+1= 19
- smallest: 2(6)-3= 12-3=9
subtract smallest from biggest
To get it more clear let us assume that ax + by + c = 0 (b ≠ 0) be the equation of the given straight line. Therefore, the slope of the straight line ax + by + c = 0 is (- ab).
The answer is C, 288 yd and here is why. The formula for the surface area of a rectangular prism is 2(Lw+wh+Lh), with L being the length, w being the width, and h being the height. After that, you plug in your values 2(8(8)+5(8)+5(8)). Make sure you follow PEMDAS, aka The Order of Operations. Solve in the parenthesis first. Inside the parenthesis, it simplifies to 64+40+40, which simplifies to 64+80, which further reduces to 144. Now multiply 144 by 2, which gives you your final answer, 288.