Answer:
Infinite number of solutions.
Step-by-step explanation:
Are the equations written correctly? They are identical. Since they overlap, every point is a solution for as long as the lines reach. Since no one is stopping them, the answers are infinite.
Answer:
x = -15 and x = 1
Step-by-step explanation:
Since we have to use the complete the square method, we first need to <u>rewrite the equation</u> in the form
.
This results in
.
Next, we <u>simplify the equation</u> to get
.
<u>Factoring </u>the left side gives us
.
Finally we <u>solve the equations</u>:
and
.
This gives us x=1, and x=-15
The best option is the first one (Six yards of rope costs $5.50). It is the lowest unit cost.
<u>Step-by-step explanation:</u>
For the given question case, first we should compare the unit costs of the choices provided and evaluate the best option.
Choice 1:
Six yards of rope costs $ 5.50
![\frac{5.50 \text { dollar}}{6 \text { yard }}=0.9167\ dollar/yard](https://tex.z-dn.net/?f=%5Cfrac%7B5.50%20%5Ctext%20%7B%20dollar%7D%7D%7B6%20%5Ctext%20%7B%20yard%20%7D%7D%3D0.9167%5C%20dollar%2Fyard)
Choice 2:
Four yards costs $ 4.75
![\frac{4.75 \text { dollar}}{4 \text { yard }}=1.1875\ dollar/yard](https://tex.z-dn.net/?f=%5Cfrac%7B4.75%20%5Ctext%20%7B%20dollar%7D%7D%7B4%20%5Ctext%20%7B%20yard%20%7D%7D%3D1.1875%5C%20dollar%2Fyard)
Thus, the best choice is the first one. Because it is the lowest unit cost.
Answer:
The domain of this function: (-∞,∞), or {x|x∈ℝ}
The range of this function: (-∞,∞), or {y|y∈ℝ}