A 100% increase would be 18 so you just have to divide until you get the number added so from 9 to 13 is a increase of 4 so that would be around 44.44% repeating.
Answer:
I believe you have to put a mark at -2 going down and a -5 on the left to right line.
Step-by-step explanation:
Hope this helps!
This is a 1:3 ratio of girls to boys so we need to find one part by dividing 236 by 4 giving us 59 and then multiplying by the parts with boys which is 3 so 59*3=177 therefore there are 177boys in the class

Explanation
Step 1
find the slope
when yo know 2 points of a lines, P1 and P2, you can find the slope by using:

then, let
P1(6,0)
P2(0,4)
replace

Step 2
find the equation of the line,

so , the equation of the lines is

where -2/3 is the slope, and 4 is the y-intercept
I hope this helps you
Answer:
2 real roots
Step-by-step explanation:
The discriminant is b^2 -4ac where ax^2 +bx -c
If b^2 -4ac > 0 we have 2 real roots
b^2 -4ac = 0 we have 1 real root
b^2 -4ac < 0 we have 2 complex roots
x²-x-12=0
a =1 b=-1 c = -12
(-1)^2 - 4(1)*(-12)
1 +48
49 > 0
2 real roots