Answer:
In #1, the slope of the line is 3
Step-by-step explanation:
To find the slope of any line, you need to use the points in the slope formula.
m(slope) = (y2 - y1)/(x2 - x1)
m = (5 - 2)/(0 - -1)
m = 3/1
m = 3
This means the slope is equal to 3.
To find 4/5 of 20.5 the first step is to convert 4/5 into a decimal. You can do that by dividing 4 by 5.
4/5 is .8 so your equation would now be .8 of 20.5
"of" states that you are multiplying, so .8 times 20.5 is 16.4
4/5 of 20.5 is 16.4
First you find the unit rate. (Divide 2.76 by 18)
You will find out that each ounce costs $0.15
Then divide 2.07 by 0.15.
The answer is 13.8 ounces.
<h3>Answer: Choice C</h3>
Here's how the verification would look like
![\frac{\sin^2x+\cos^2x}{\cos x} = \sec x](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csin%5E2x%2B%5Ccos%5E2x%7D%7B%5Ccos%20x%7D%20%3D%20%5Csec%20x)
using the identity here
![\sec x = \sec x](https://tex.z-dn.net/?f=%5Csec%20x%20%3D%20%20%5Csec%20x)