Answer:
15x - y = - 126
or y = 15x + 126
Step-by-step explanation:
will make it simple and short
to find the equation... we need to find slope first.
y2 - y1 -9 - 6
slope = m = --------- = ----------- = 15
x2 - x1 -9 - (-8)
so we know that the equation of the line using point (-8,6) and slope 15 y - 6 = 15( x + 8)
y - 6 = 15x + 120
Writing the equation in the form Ax + By = C
15x - y = -120-6
therefore.... 15x - y = - 126 or simplify it as or y = 15x + 126
Hope this helps
Answer:
Option A
Step-by-step explanation:
The next step would be to draw a circle and mark two arcs of radius equal to BG to form the angle ABC.
Hence, option A is correct
Answer:
i think its the third one correct me if im wrong 0:)
Answer:
The density of the final mixture is 1.012 g/cm³.
Step-by-step explanation:
To calculate the density of the final mixture we need to know the mass of each solution used is. We will also need to convert the volumes from litres to cm³, to do that we can just multiply 1000.
For the ethanol:
![mass = volume*density\\mass = (80*1000)*1.09 = 87,200 \text{ g}\\](https://tex.z-dn.net/?f=mass%20%3D%20volume%2Adensity%5C%5Cmass%20%3D%20%2880%2A1000%29%2A1.09%20%3D%2087%2C200%20%5Ctext%7B%20g%7D%5C%5C)
For the propylene:
![mass = (148*1000)*0.97 = 143,560 \text{ g}](https://tex.z-dn.net/?f=mass%20%3D%20%28148%2A1000%29%2A0.97%20%3D%20143%2C560%20%5Ctext%7B%20g%7D)
So the mass in the final mix is the sum of both:
![mass_{final} = 87200 + 143560 = 230,760 \text{ g}](https://tex.z-dn.net/?f=mass_%7Bfinal%7D%20%3D%2087200%20%2B%20143560%20%3D%20230%2C760%20%5Ctext%7B%20g%7D)
Therefore the density is:
![density_{final} = \frac{230760}{228000} = 1.012 \text{ }\frac{g}{cm^3}](https://tex.z-dn.net/?f=density_%7Bfinal%7D%20%3D%20%5Cfrac%7B230760%7D%7B228000%7D%20%3D%201.012%20%5Ctext%7B%20%7D%5Cfrac%7Bg%7D%7Bcm%5E3%7D)