a soccer player has kicked in his last seven games, the following number of goals. 4, 12, 6, 10, 11, 8 and 6..
how many foals does he need to kick in the next game for a mean of 8?
2006-10-23 20:09:36 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
and please explain how u did it coz i dunno how..
i know mean is add up numbers then divide how many there is but yer i need healp how to find out how many till 8 ya know wat i mean lol
2006-10-23 20:10:53 · update #1
He needs to maintain a mean of 8 goals after 8 matches.
So the total no. of goals to be scored = 8*8 = 64.
Out of these 64 goals he has already scored 4 + 12 + 6 + 10 + 11 + 8 + 6 = 57 goals.
So in the 8th match he needs to score 64 - 57 = 7 goals.
That's the answer!
2006-10-23 20:25:14 · answer #1 · answered by psbhowmick 6 · 1⤊ 0⤋
to find the mean, add all the values, and divide by how many there are.
4 + 12 + 6 + 10 + 11 + 8 + 6 = 57
He has kicked 57, In 8 games to get a mean of 8 he must have kicked 64 altogether, so he needs to kick 7.
2006-10-23 22:09:46 · answer #2 · answered by maggie_at0303 3 · 0⤊ 0⤋
Let's take the no. of goals required as 'x'.
(4+12+6+10+11+8+6+x)/8 = 8
57 + x = 64
x = 64 - 57
x = 7
In order to achieve a mean of 8, he needs to score 7 goals in the next game.
(By the way, the player seems amazing. Nobody I know can score more than 4 goals a game!)
2006-10-23 20:53:04 · answer #3 · answered by Akilesh - Internet Undertaker 7 · 0⤊ 0⤋
He can kick as many foals as people will let him, and just be called mean. If he kicks goals, though,
(4 + 12 + 6 + 10 + 11 + 8 + 6 + x)/8 = 8
57 + x = 64
x = 7
2006-10-23 20:28:31 · answer #4 · answered by Helmut 7 · 0⤊ 0⤋
4+12+6+10+11+8+6+x = 8*8
57 + x = 64
x = 64 - 57
x = 7
2006-10-23 23:21:02 · answer #5 · answered by kenyanmartin2000 2 · 0⤊ 0⤋
mean is the average of all the number of goals scored from all the games
he has played already 7 games
including the next game i.e when he plays a total of 8 games he gets a mean of 8
so in 8 games he has scored a total of 8*8 = 64 goals
the total number of goals he has alreday scired in the 7 games
= 4+12+6+10+11+8+6 = 57
so the number of goals he must score in the 8th game = 64 - 57 =7
2006-10-23 20:24:49 · answer #6 · answered by grandpa 4 · 0⤊ 0⤋
( 4+12+6+10+11+8+6+x)/8=8
(57+x)/8=8 x=7
you can skip the algebra and just be like there will be 8 games so you must divide the total number of goals by 8 and they must =8
so the total number of goals must be 64. then do 64 minus the goals you now of already and what is left is 7
2006-10-23 20:16:17 · answer #7 · answered by RichUnclePennybags 4 · 1⤊ 0⤋
7
2006-10-23 20:21:07 · answer #8 · answered by kevin_4508 5 · 0⤊ 0⤋