Hello :
<span>x²+2x+y²+6y-39=0
(x²+2x+1)-1 +(y² +6y+9)-9 -39 =0
(x+1)² + (y+3)² = 49 = 7²
</span><span>the radius is : 7</span>
Answer:
$150 is the independent variable and $25 is the dependent variable
Step-by-step explanation:
independent variables are do not change. dependent variables change.
Answer:
The number of melon was 3 and the number of apples was 45.
Step-by-step explanation:
1. Melons cost $20 per crate and apples cost $8 per create. If the total was 48 crates for $420, you can make the following system of equations, where 
is the number of melons and 
is the number of apples:
2. By applying the Method of substitution, you can solve for in the first equation and substitute it into the second one to find . Then, you can substitute the value of into the first equation to find :
Answer: In mathematics, an extraneous solution (or spurious solution) is a solution, such as that to an equation, that emerges from the process of solving the problem but is not a valid solution to the problem.
Step-by-step explanation:
