Variables are letters from the end of the alphabet
Economics always uses the firsts letter of whatever that letter is representing.
<span> An </span>expression<span> such as 4x</span>3<span> is a </span>variable<span>. It can assume different values because x can assume different values.</span>
Answer:
84 in.
Step-by-step explanation:
multiply 12 by 7
there are 12 inches in a foot and 7 feet
Answer: <
Step-by-step explanation: The top triangle (1) has a smaller area than triangle 2.
Answer:
The beam should be placed 8 feet from the center.
Step-by-step explanation:
The struts are y = √(x + 8) and y = √(x − 4). The struts are 2 feet apart at the location of the beam:
√(x + 8) − √(x − 4) = 2
Solving:
√(x + 8) = 2 + √(x − 4)
x + 8 = 4 + 4√(x − 4) + x − 4
8 = 4√(x − 4)
2 = √(x − 4)
x − 4 = 4
x = 8