Answer:
46/7 :)
Step-by-step explanation:
6 4/7 is the mixed number here.
The answer is (6*7 + 4) / 7 = 46/7 :)
Subtracting the second equation by 18 on both sides, we have xy=-18. Next, we divide both sides by x to get y=-18/x Plugging that into the first equation, we have x+2(-18/x)=9. Multiplying both sides by x, we get x^2-36=9x. After that, we subtract both sides by 9x to get x^2-9x-36=0. Finding 2 numbers that add up to -9 but multiply to -36, we do a bit of guess and check to find the answers to be -12 and 3. Factoring it, we get
x^2-12x+3x-36=x(x-12)+3(x-12)=(x+3)(x-12). To find the x values, we have to find out when 0=(x+3)(x-12). This is simple as when you multiply 0 with anything, it is 0. Therefore, x=-3 and 12. Plugging those into x=-18/y, we get x=-18/y and by multiplying y to both sides, we get xy=-18 and then we can divide both sides by x to get -18/x=y. Plugging -3 in, we get -18/-3=6 and by plugging 12 in we get -18/12=-1.5. Therefore, our points are (-3,6) and (12, -1.5)
Answer:
x is a number that is multiple by 3
Step-by-step explanation:
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The full answer would be 83.454 but you can just say 83 pounds. Both are right
Answer:
The coordinates of the other end is
Step-by-step explanation:
Given
Required
Find the coordinates of the other end
Let Midpoint be represented by (x,y);
(x,y) = (5,2) is calculated as thus
So
and
Where and
So, we're solving for
Solving for
Substitute 5 for x and -6 for x₁
Multiply both sides by 2
Add 6 to both sides
Solving for
Substitute 2 for y and 2 for y₁
Multiply both sides by 2
Subtract 2 from both sides
Hence, the coordinates of the other end is