Answer:

Step-by-step explanation:
For the given equation :
Making the coefficients of x to L.H.S


Taking 3 as common from the above equation
Splitting the equation to make factors

Taking common from the equation:

Equating 'x' to zero

Complete question :
A pool holds 1440 cubic feet of water, the city charges $1.75 per cubic meter of water used.
How much will it cost to fill the pool?
Answer:
$71.36
Step-by-step explanation:
Amount charged per cubic meter = $1. 75
Total volume of pool = 1440 ft^3
Using the conversion unit chart :
1 cubic meter = 35.3147 cubic foot
Then we can express the capacity of water held by the pool in cubic metre.
If 1 cubic meter = 35.3147 cubic foot
Then ;
y cubic meter = 1440 cubic foot
y = 1440/35.3147
y = 40.776220 cubic meter
Thus;
Cost of filling the pool will be;
$1.75 × 40.776220
= $71.358386
= $71.36
2.1 kg x 16 is 33.6 so your Awnser is 33.6kg
It's an isosceles triangle. The best way to solve these problems is to just visualize the cross section. If you just think about it, it makes sense.