Answer:
There are 25 students in Hannah's class.
Step-by-step explanation:
If 20 students in Hannah's class is 80% of the total amount of students, we can use a variable to figure out the total amount of students.
Let's say x is the total amount of students. We can use this equation to solve the problem:
This is saying 20 equals 80% (.8 when you move the decimal 2 times) of x, or the total amount of students. Let's solve.
20 = .8x
Divide by .8
25 = x
There are 25 students in Hannah's class.
Answer: “The lines are parallel” and “There is no solution to the system” are both correct.
Step-by-step explanation:
So you have y-y1=m(x-x1) and you are told that the slope has to be parallel to the line x-2y=6
1.) solve x-2y=6 for y
x-2y=6
Subtract x from both sides to get
-2y=6-x
Divide each side by -2 to get
y=-3-(x/2)
Now the slope for this equation is -1/2 and the line has to be parallel to this equation. Therefore the slope of the line that is parallel to this equation is going to be -1/2.
Now You have to use the point (2,-5) as your x1 and y1 and the slope that is parallel to the line x-2y=6, which is -1/2
y-(-5)=-1/2[x-(-2)]
Simplifying this you get
y+5=-1/2(x+2)
Above is how you write the equation in point slope form.
Now if it is asking you for slope-intercept form all you do is distribute -1/2 and subtract 5
y+5=-1/2(x+2)
y+5=-1x/2-1
Subtracting 5 from both sides gives you
y=-x/2 +4. Hope this helps. Let me know if you have questions
Z=ya=c gggggggggggggggggggggggg
How much is it that’s my question