I am pretty sure it would be -0.5. Please comment me wrong if I am wrong.
Answer:
x = -1
Step-by-step explanation:
"An undefined slope" indicates that the line in question is a vertical one. The coordinate x = -1 tells us that the equation of the line is just that: x = -1.
Answer:
option D
Step-by-step explanation:
from the question 10>4-3x
it simply means 10-4>-3x
=6>-3x
x>6/-3
=x>-2
the above statement means that x is greater than -2
Answer:
The best estimate for the true proportion of all such students who own a Texas Instruments calculator is 0.3.
Step-by-step explanation:
The estimate of the true proportion of all students who own a Texas Instruments calculator is the number of students who own a Texas Instruments Calculator divided by the total number of students.
6 students own a Texas Instruments Calculator
20 total students
p = 6/20 = 0.3
The best estimate for the true proportion of all such students who own a Texas Instruments calculator is 0.3.
Let us call the rate as velocity. Now the velocities of the plane and of the wind are:
![v_{p}](https://tex.z-dn.net/?f=%20v_%7Bp%7D)
and
![v_{w}](https://tex.z-dn.net/?f=%20v_%7Bw%7D%20)
:
Now
case 1:
![v_{p} - v_{w} =4620/6=770 km/h](https://tex.z-dn.net/?f=%20v_%7Bp%7D%20-%20%20v_%7Bw%7D%20%3D4620%2F6%3D770%20km%2Fh)
case 2:
![v_{p} + v_{w} =3750/3=1250 km/h](https://tex.z-dn.net/?f=%20v_%7Bp%7D%20%2B%20%20v_%7Bw%7D%20%3D3750%2F3%3D1250%20km%2Fh%20)
from equation 2:
![v_{w} = 1250 - v_{p}](https://tex.z-dn.net/?f=%20v_%7Bw%7D%20%3D%201250%20-%20%20v_%7Bp%7D%20)
substitute in equation 1:
![v_{p} - 1250 + v_{p} =770 v_{p} = 1010 km/h](https://tex.z-dn.net/?f=v_%7Bp%7D%20-%201250%20%2B%20v_%7Bp%7D%20%3D770%20v_%7Bp%7D%20%3D%201010%20km%2Fh%20)
Which is your velocity in still air (without wind)
Substituting back in:
![v_{w} = 1250 - v_{p}](https://tex.z-dn.net/?f=%20v_%7Bw%7D%20%3D%201250%20-%20%20v_%7Bp%7D%20)
you get:
![v_{w} = 1250-1010 = 240 km/h](https://tex.z-dn.net/?f=%20v_%7Bw%7D%20%3D%201250-1010%20%3D%20240%20km%2Fh%20)
which is the wind velocity