Answer:
$30
Step-by-step explanation:
Divide the cost ($75) by the yards (2 1/2) to get $30 per yard.
Answer:
17/13
Step-by-step explanation:

The formula of a midpoint:

We have:

Substitute

<h3>Answer: (-2, -4)</h3>
Answer: 33 gallons
Step-by-step explanation:
We initially have 130 gallons of a
acid solution and we need to change it to a
acid solution, and for that it is necessary to evaporate
gallons of water.
So, this situation can be mathemtically expressed as follows:

Then:

Isolating
:


Hence, we need to evaporate 33 gallons of water.
2.8 I got that same on on khan academy it’s 2.8 trust me