1) Two numbers are in the ratio 5: 6. If 8 is added to each of the numbers, they will be in the ratio 7: 8. Find the numbers.
1 answer:
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Answer: B = (6,-8)
Step-by-step explanation:
first the midpoint formula is
then you take the x co-ordinate of A and substitute it into one of the x values in the first part of the formula:
then solve it like an equation:
then you take the y co-ordinate of A and substitute it into one of the y values in the second part of the midpoint formula:
then solve it like an equation:
∴ the answer is x=6, y= -8
which is expressed as a point, B(6,-8)
you cannot show too much "work"
basically, you remove what is common to all of the factors, and then put brackets, as it will be multiplied back in, remember that when you multiply exponents with the same base, its same as adding them, so subtract to remove...
you can seperate two of the variables , then factor, then subtract the last one from those two, because it cannot be factored out , as in part2 #2
