Answer:
A. the rational number system is closed under addition, but not multiplication
Step-by-step explanation:
may i pleaseee have brainliest
Answer:

Step-by-step explanation:
Vertex form:
where:
is the vertex
is some constant
Given:
- vertex = (-4, -1)
- point on parabola = (-2, -3)
Substitute given values into the formula to find
:





Therefore, the equation of the parabola is:

I don’t know what you mean can you explain more?
Answer:
$190.
Step-by-step explanation:
We can write the equation 120=25+1/2n where n is the cost of a new guitar. First, we subtract 25 from both sides to get 95=1/2n. Then, we multiply both sides by 2 to get 190=n. Therefore, the cost of a new guitar is $190.
Extend means to increase, add length to it, ADD.
2.826
+ 1.46
--------------
4.286