Answer:
Step-by-step explanation:
Given;
-Ba+9=Q²a
To solve for "a", make "a" the subject of the formula.
First, collect similar terms together;
-Ba - Q²a = -9
multiply through by "-1" to remove the negative sign;
Ba + Q²a = 9
factor out a;
a(B + Q²) = 9
divide both sides of the equation by "(B + Q²) ";
Therefore, the value of "a" in the given expression is 
Answer:
w=18
Step-by-step explanation:
w+6=2(w-6)
w+6=2w-12
w+18=2w
18=w
Answer:
By giving reasons to the statements
3h + 4s = 20
1) Let's write an equation for that, calling hot dogs by h and sodas by s.
3h + 4s = 20
Note that in this equation we are relating prices, of hot dogs and sodas and the total cost of them. Similar reasoning is used to set a linear system of equations.
216 = x + y
y = 5x
216 = 6x
36 = x
y = 5(36)
y = 180
Species A can travel at a top speed of 180
Species B can travel at a top speed of 36
