5' 4" = 64" (5x12)+4
2' 7" = 31" (2x12)+7
3' 10" = 46" (3x12)+10
64+31+46= 141"
141/12= 11.75= 11 3/4
12" per foot / 4 denominator from above= 3
3 numerator from above x 3 quotient from above= 9
11' 9"
Answer: D
Step-by-step explanation:
A quadratic function has a degree of 2 so there will be two roots. The statement says the function does NOT CROSS THE X-AXIS so there are no real roots. That means both roots must be imaginary (complex).
y= -4x and 8x-y=6
what you do is switch the negative y to the other side and move the positive 6 to the other side thus making y=8x-6.
I don't get what those numbers are on the question but the way you solve it is by combining them and putting one y into the other
8x-6=-4x 12x=6 6/12=x .5=x
then you plug in x to find y in whichever equation:
-4x=y -4(.5)=y -2=y
so the final answer would be (.5,-2)
Answer:
I think it changed from 36x to 48x
Depending on how you look at it, it could have changed from 3x to 4x or 36x to 48x.
If they said it was 18 feet instead of 18 inches, it would be 3x or 4x, but they had it as inches.
18 inches = 1.5 feet
72/1.5 = 48
54/1.5 = 36
So originally, it would have been a scale of 1 in : 36in , but it changed to 1 in : 48 in
Sorry if this was confusing.
We have that
y=-2x+3
y=(1/3)x-4
using a graph tool
see the attached figure
the solution of the system is the point (3,-3)
