4 is 80% of 5, because 1 is worth 20%
You need to form an algebraic equation. 4.5+h=7.3 therefore h= 7.3 - 4.5 when you take 4.5 to the other side it becomes negative therefore the answer is 2.8.
Answer:
Step-by-step explanation:
240/360 can be simplified to 2/3. r^2 can be substituted for 9, and 2/3*9 is 6.
Answer:

Step-by-step explanation:
Use FOIL:
<em>(a + b)(c + d) = ac + ad + bc + bd</em>
We have:

<em>combine like terms</em>
