Answer:
Step-by-step explanation:
(x + 4)^2 =
(x + 4)(x + 4) =
x^2 + 4x + 4x + 16 =
x^2 + 8x + 16
44 the total volume of this composite solid is 896
<h2>Question:- </h2>
A water tank can be filled completely in 15 hours. if the tank is filled for 5½hours and left .what part of the tank is remained to be filled
<h2>Answer:-</h2>
<h3>UNITARY METHOD :- </h3>
In 15 hrs if X lts of tank is filled
then in 1hr ![\frac{x}{15 } lts \: is \: filled \:](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B15%20%7D%20lts%20%5C%3A%20is%20%5C%3A%20filled%20%5C%3A%20)
so in 5½ hrs ![( \frac{x}{15} \times \frac{11}{2})lts \: is \: filled \:](https://tex.z-dn.net/?f=%28%20%5Cfrac%7Bx%7D%7B15%7D%20%20%5Ctimes%20%20%5Cfrac%7B11%7D%7B2%7D%29lts%20%5C%3A%20is%20%5C%3A%20filled%20%5C%3A%20)
<h3>Amount left to be filled :- </h3>
![x - \frac{11x}{30} \\ \frac{30x - 11x}{30} \\ \frac{19x}{30} = part \: \: left \: to \: be \: filled \:](https://tex.z-dn.net/?f=x%20-%20%20%5Cfrac%7B11x%7D%7B30%7D%20%20%5C%5C%20%20%5Cfrac%7B30x%20-%2011x%7D%7B30%7D%20%20%5C%5C%20%20%5Cfrac%7B19x%7D%7B30%7D%20%20%3D%20part%20%5C%3A%20%5C%3A%20left%20%5C%3A%20to%20%5C%3A%20be%20%5C%3A%20filled%20%5C%3A%20)
<h3>In percentage:- </h3>
![\frac{19x}{30 \times x} \times 100 \\ \frac{19 \cancel{x}}{3 \times \cancel{x}} \times 10 \\ \frac{190}{3} = 63.33\% \\ 63.33\% = \% \: left \: to \: filled \:](https://tex.z-dn.net/?f=%20%5Cfrac%7B19x%7D%7B30%20%5Ctimes%20x%7D%20%20%5Ctimes%20100%20%5C%5C%20%20%5Cfrac%7B19%20%5Ccancel%7Bx%7D%7D%7B3%20%5Ctimes%20%20%5Ccancel%7Bx%7D%7D%20%20%5Ctimes%2010%20%5C%5C%20%20%5Cfrac%7B190%7D%7B3%7D%20%20%3D%2063.33%5C%25%20%5C%5C%2063.33%5C%25%20%3D%20%5C%25%20%5C%3A%20left%20%5C%3A%20to%20%5C%3A%20filled%20%5C%3A%20)
5x - 25 = 4x + 20
x - 25 = 20
x = 45
Answer:
These are all points on a graph. I'm not sure what you're asking.