35-15 is 20. and 43-26 is 17. These two are different because you are regrouping in the 2d problem, as in the first, you just subtract.
No, because the divisor may not divide evenly.
Use f and m for "female" and "male." Then f = m + 16, and f + m = d (total)
So now we have the system of linear equations
f = m + 16
f + m = d
We can eliminate f by subst. m + 16 for f in the second equation:
d-16
m + 16 + m = d, or 2m + 16 = d. Find m. 2m = d - 16, so that m = --------
2
Assuming that the male horses are either brown or black, and that 25% of these are brown, then the rest must be black. This number is
d-16
0.75 [ --------- ] .
2
Answer:
(-5,-1)
Step-by-step explanation:
First, draw a parallel line to the blue one that has a slope of over 1 to the right and up 1.
Second, look at the new line and see if any of the points are on the line.
All of the other point do not fall on the new line.