years because it’s longer than any of those
Answer:
Step-by-step explanation:
y = -x - 9
y = 2x + 3
Find point of intersection
2x + 3 = -x - 9
x = -4
Intersection: (-4,-5)
Answer:
d. 28
Step-by-step explanation:
I'm going to show you how to do these types of problems and the other two you should try by yourself.
There are 63 bikes. The ratio is 4:5 blue to red.
4x+5x=9x
9x=63
x=7
blue: 4x = 4*7=28
A perpendicular line will have a slope that is the negative reciprocal of the other.
Since the slope of this equation is 0.25, or 1/4, then the negative reciprocal of this is -4/1, or -4. Since this line has to pass through (-6,8), the y-intercept of the equation is -16. Then the equation is y = -4x - 16. Hope this helps!
Answer:
3
Step-by-step explanation:
These are similar triangle
We can use ratios to solve
12 12+4
------ = ----------
9 9+DC
Using cross products
12( 9+DC) = 9*(12+4)
12 (9+DC) = 9*16
Divide each side by 12
12/12 (9+DC) = 9*16/12
9+DC = 12
Subtract 9 from each side
9+DC-9 =12-9
DC =3