Answer:
3
Step-by-step explanation:
If y varies directly with x, we have:
When y=12, x=4
Substituting these values into the equation
12=4k
k=12/4
k=3
The constant of proportionality is 3.
1) d) 203.2 cm
2) c) 226.06 cm
3) b) 12.7 cm
4) d) 381.25 m
5) d) 324.215 m
Answer:
3x^2-9=0
Step-by-step explanation:
√3 does not equal a whole number.
Answer:
The other solution is 12.
Step-by-step explanation:
Break the solution into groups: (x^2+2x)+(-12x-24)
Factor out the x^2 from the first group to get x(x+2)
Factor out the -12 out of the second group to get -12(x-12)
Here we get (x-12)(x+2)
You can see solutions are -2 and 12.
If we make his age equal to x, the. We can set up the equation X=4(x-15)
