Just want to check answers.
combine like terms:
-4C + 5D - 2D^2 - 3D^2 + 7C - 2C - 6D - 5 + 9 +2C
Answer I got = 3c - 1d - 5d^2 + 4
Find the median:
100,100,99,99,99,96,96,90,88,86
Answer I got = 96
2007-05-30 12:48:49 · 13 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
3C-D+5D^2+4 You got this one right.
97.5 There are 10 numbers, so take the average of the middle two(99 and 96).
2007-05-30 12:52:39 · answer #1 · answered by je t'♥ 5 · 0⤊ 0⤋
combine like terms:
-4C + 5D - 2D^2 - 3D^2 + 7C - 2C - 6D - 5 + 9 +2C
-4c +7c -2c +2c + 5D - 2D^2 - 3D^2 - 6D - 5 + 9
3c -5d^2 -d +4
Answer you got = 3c - 1d - 5d^2 + 4 Yes, good.
Find the median:
100,100,99,99,99,96,96,90,88,8...
200 +3(99) +2(96) +90 +88 +8...
200 +297+192 +90 +88+ 8
497 +370+8...
875...
Maybe I don't know how to do this, but I got 87.5 I also did it with a calculator and still got 87.5
Answer you got = 96
2007-05-30 19:58:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The second one is definitley 97.5, this is becuase the 2 middle numbers are 99 and 96. When there r two middle numbers u have to find the average of the two ([99+96]/2).
The 1st question should b what you got originally.
2007-05-30 20:00:21 · answer #3 · answered by razac24 1 · 0⤊ 0⤋
The first one is right, but as for the second one, I got 97.5, the average between the two middle numbers 99 and 96. If there was an odd number of values, it would be the middle number.
2007-05-30 19:54:19 · answer #4 · answered by Supermatt100 4 · 1⤊ 0⤋
true.
arithmetic mean:
100+100+99+99+99+96+96+90+88+86=953
953/10=95.3
median=(99+96)/2=195/2=97.5
2007-05-30 20:52:39 · answer #5 · answered by iyiogrenci 6 · 0⤊ 0⤋
Ya only put it in descending order, so it would be
-5d^2-d+3c+4
and the median is 97.5
2007-05-30 19:56:50 · answer #6 · answered by Memes 1 · 0⤊ 0⤋
first is right
second should be (99+96) / 2 = 97.5
2007-05-30 19:53:47 · answer #7 · answered by Anonymous · 1⤊ 0⤋
for the 2nd one you have to add both 99 and 96 and divide by 2...the first one is right
2007-05-30 19:54:14 · answer #8 · answered by starsaphirewwhg 2 · 1⤊ 0⤋
you did the combine the like terms properly and for the median i cant help you because i need all of the numbers to check that.
2007-05-30 20:03:33 · answer #9 · answered by marty 2 · 0⤊ 0⤋
i dont know the first 1
the second 1 is 97.5
2007-05-30 19:51:38 · answer #10 · answered by Anonymous · 0⤊ 0⤋