https://padlet.com/yuna7933/nq45y827q1kimgoi 학번 이름쓰세요. 점 3개 표시 눌러 그리기 기능을 이용하면 편합니다. en-us 2021-05-12 00:31:00 UTC 2025-05-21 14:07:48 UTC hello@padlet.com https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515724676 2021-05-12 00:38:17 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515724676 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725048 x/4+x/4+1/5<=2
5x+5x+4<=40
10x<=36
x<=3.6]]> 2021-05-12 00:38:24 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725048 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725196 2021-05-12 00:38:28 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725196 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725374 2시간=120분
120-12=108 
108분=9/5시간
거리/속력=시간
왕복이므로 9/5X1/2=9/10
거리를 미지수 a로  정하였을 때
부등식은 a/4<=9/10
5a<=18
a<=18/5
18/5=3.6
a<=3.6
3.6km 이내

]]> 2021-05-12 00:38:31 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725374 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725434 2시간-12분=120분-12븐
=108분=1시간48분=오고사는시간
거리=시간x속력
사는시간+오는시간<=108분
x/4+x/4<=1과 60분의 48
x/2<=1과 5분의 4
곱하기 10을하면
5x<=18 x<=18/5 정답은 3.6km]]> 2021-05-12 00:38:33 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725434 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725617 2x/4+1/5</2
10x+4</40
 10x</36
x</3.6 ]]> 2021-05-12 00:38:36 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725617 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725829 x/4+12/60+x/4<= 2
5x+4+5x<=40
5x+5x<=40-4
10x<= 36
x<=3.6

]]> 2021-05-12 00:38:41 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515725829 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515726131 2021-05-12 00:38:47 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515726131 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515726482 2 * x/4 <= 2 - 12/60
x/2 <= 108/60
x/2 <= 18/10
5x <= 18
x <=18/5
3.6km 이내]]> 2021-05-12 00:38:55 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515726482 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515726750 2021-05-12 00:39:01 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515726750 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515728419 2021-05-12 00:39:34 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515728419 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515729009 전체 거리가x 일때
가는데 거리:x,속력:4,시간:x/4
물건을 사는데 걸리는 시간: 12분 =12/60=1/5 시간
오는데 거리:x,속력:4,시간:x/4

가는데 걸리는 시간+물건 사는시간+ 오는시간<=2시간 이므로 
x/4+1/5+x/4 <= 2
5x+4+5x<=40
10x<=36
x<=36/10
x<=3.6          3.6km]]> 2021-05-12 00:39:46 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515729009 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515729140 2021-05-12 00:39:49 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515729140 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515737812 1200x + 1000 <= 15000
1200x <= 14000
x <= 14000/1200
x <= 140/12
x <= 35/3
꽃을 35/3개를 살 수 없기에
11 < 35/3 < 12
최대 11개를 살 수 있다.]]> 2021-05-12 00:42:46 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515737812 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515738942 1200x+1000</15000
1200x</14000
12x</140
3x</35
x</35/3  ]]> 2021-05-12 00:43:10 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515738942 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515739951 1200x+1000<=15000
1200x<=15000-1000
1200x<=14000
12x<=140
x<=140/12
x<=35/3
x=자연수
x의 최대는 11이다]]> 2021-05-12 00:43:32 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515739951 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515740592 2021-05-12 00:43:45 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515740592 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515741112 x송이를 산다
1200x+1000<=15000
1200x<=14000
x<=35/3
x는 꽃의 개수이므로 자연수임.
따라서 x의 최대는 11.]]> 2021-05-12 00:43:57 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515741112 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515744997 x/2 + x/3  <= 3
3x + 2x <= 18
5x <= 18
x <= 18/5
최대 3.6km 지점까지 올라갔다 올 수 있다.]]> 2021-05-12 00:45:19 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515744997 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515745112 2021-05-12 00:45:22 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515745112 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515746233 2021-05-12 00:45:45 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515746233 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515746671 x/2+x/3 </3
3x+2x</18
5x</18
x</18/5]]> 2021-05-12 00:45:56 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515746671 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515746972 2021-05-12 00:46:02 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515746972 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515747951 1200x+1000≤1500
1200x≤14000
12x≤140
x≤35/3
11송이

]]> 2021-05-12 00:46:22 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515747951 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515748338 최대 x km 지점까지 올라갈 수 있다고 하면
x/2 +3/x <= 3
3x +2x <=18
5x <= 18
x <= 3.6 
최대 3.6 km 지점까지 올라갔다 올 수 있다.]]> 2021-05-12 00:46:31 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515748338 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750147 1200x+1000<=15000
1200x<=14000
x<=14000/1200
x<=140/12
x<=35/3
최대로 살수있는 꽃의 개수는 총 11송이이다.]]> 2021-05-12 00:47:08 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750147 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750587 2021-05-12 00:47:18 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750587 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750627 2021-05-12 00:47:19 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750627 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750707 평균 구하는 법 :
모든 나온 값을 전부 더한 뒤 값의 개수만큼 나눈다.
(87 + 89 + x) / 3 >= 90
87 + 89 + x  > = 270
176 + x >= 270
x >= 94
94점 이상 맞아야 한다.]]> 2021-05-12 00:47:20 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515750707 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515751613 x/4+1/5+x/4<=2
20을 곱하면
5x+4+5x<=40
10x<=36
x<=36/10
즉,x<=3.6]]> 2021-05-12 00:47:39 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515751613 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515752023 1200x+1000≤15000
1200x≤14000
x=35/3 꼿은 반송이가 없으니깐 11이된다]]> 2021-05-12 00:47:47 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515752023 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515753916 87+89+x/3>/90
87+89+x>/270
x>/94 ]]> 2021-05-12 00:48:26 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515753916 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515756754 2021-05-12 00:49:24 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515756754 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515757881 1200a+1000<=115000
12a+10<=150
12a<=140
a<=35/3

]]> 2021-05-12 00:49:48 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515757881 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515758117 2021-05-12 00:49:54 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515758117 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515758274 평균 = 모든 자료의 값/ 자료의 수
세번의 시험 평균 = 세번의 시험 점수의 합/ 3
(87 + 89 +x) / 3 >= 90
87+89+x >= 270
176+ x >= 270
x>= 94]]> 2021-05-12 00:49:57 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515758274 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515759084 1200x+1000<=15000
1200x<=15000-1000
1200x<=14000
x<=35/3
11개]]> 2021-05-12 00:50:11 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515759084 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515759382 유리하다라는 개념 = 더 싸게 할 수 있다.
일반 입장료 = 1000x
단체 입장료( 할인 )  = 1000 * 30 * 75/100 = 22500
1000x > 22500
10x > 225
x > 225/10
22.5명보다 더 많이 가야 하지만 사람이기에 정수가 되야 한다.
23명부터 단체 입장권을 사는 게 유리하다.]]> 2021-05-12 00:50:17 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515759382 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515759807 1000x >/30X1000X3/4
x>/22.5 ]]> 2021-05-12 00:50:25 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515759807 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515762217 2021-05-12 00:51:12 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515762217 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515762529 x/2+x/3<=3
3x+2x<=18
5x<=18
x<=18/5
3시간 이내 등산할 수 있는 거리는 3.6km이다.]]> 2021-05-12 00:51:19 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515762529 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515762974 이동+사는시간+이동<=여유시간
x/4+12/60+x/4<=2
x/4+1/5+x/4<=2
5x+4+5x<=40
10x<=36
x<=3.6
3.6이하]]> 2021-05-12 00:51:27 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515762974 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515763661 1200x+1000<=15000
1200x<=14000
3x<=35
최대 11개이므로 
x의 범위는 11]]> 2021-05-12 00:51:41 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515763661 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515763663 2021-05-12 00:51:41 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515763663 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515765510 2021-05-12 00:52:17 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515765510 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515766390 한송이에 1200원인 장미는 x송이에는 1200x
포장지의 가격은 1000
이것이 15000원 이하가 되어야 하기 때문에 식은
1200x+1000<=15000
식을 정리하면
1200x<=15000-1200
1200x<=13800
x<=35/3
정답은 11송이 ]]> 2021-05-12 00:52:35 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515766390 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515767938 2021-05-12 00:53:06 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515767938 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515768274 2021-05-12 00:53:12 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515768274 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515769323 x명부터 30명 입장권을 사는 것이 유리하다.
1000x> 30 X 1000 X3/4
1000x > 22500
x > 22.5
x는 사람 수 이므로 자연수여야 한다. 따라서 x는 23명이다. ]]> 2021-05-12 00:53:35 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515769323 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515770644 x/2+x/3<=3
3x+2x<=18
5x<=18
x<=18/5
18/5=36/10
x<=3.6]]> 2021-05-12 00:54:02 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515770644 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515776397 87+89+x/3>=90
87+89+x>=270
x+176>=270
x>=94

]]> 2021-05-12 00:55:46 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515776397 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515778828 일반입장료=1000x 단체입장료=1000x30x75/100=22500
1000x=22500
2x>45       x>45/2
x>22.5  사람은 소수점으로 나타내지않으므로 23명이상이 된다]]> 2021-05-12 00:56:31 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515778828 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515779660 2021-05-12 00:56:49 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515779660 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515781387 최대 등산 거리를 x라 하면 
시간=거리/속력 이므로
x/2+x/3<=3
양변에 6을 곱하면
3x+2x<=18
5x<=18
x<=18/5=3.6
정답은 3.6km]]> 2021-05-12 00:57:22 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515781387 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515781876 2021-05-12 00:57:31 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515781876 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515782291 (87+89+x)나누기3 =>90
87+89+x => 270
176+x=> 270
x=> 270-176
x=> 94]]> 2021-05-12 00:57:39 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515782291 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515785107 1000x>30X1000X3/4
1000x>22500
x>22.5
23명부터 사는게 유리하다.]]> 2021-05-12 00:58:41 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515785107 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515787362 최대 x송이 살수있다.
1200x+1000<=15000
1200x<=14000
12x<=140
x<=140/12
x<=35/3
x<=11+2/3 총 11송이 살수있다.]]> 2021-05-12 00:59:30 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515787362 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515787376 2021-05-12 00:59:30 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515787376 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515790944 2 * x/4 <= 2 - 12/60
x/2 <= 108/60
x/2 <= 18/10
5x <= 18
x <=18/5
3.6km 이내]]> 2021-05-12 01:00:43 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515790944 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515792653 1200x + 1000 <= 15000
1200x <= 14000
x <= 14000/1200
x <= 140/12
x <= 35/3
꽃을 35/3개를 살 수 없기에
11 < 35/3 < 12
최대 11개를 살 수 있다.]]> 2021-05-12 01:01:19 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515792653 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515793362 87+89+x/3>=90
3을 곱하면
87+89+x>=270
x>=270-176
x>=94
답은 94점 이상]]> 2021-05-12 01:01:35 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515793362 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515794922 x/2 + x/3  <= 3
3x + 2x <= 18
5x <= 18
x <= 18/5
최대 3.6km 지점까지 올라갔다 올 수 있다.]]> 2021-05-12 01:02:11 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515794922 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515795947 평균 구하는 법 :
모든 나온 값을 전부 더한 뒤 값의 개수만큼 나눈다.
(87 + 89 + x) / 3 >= 90
87 + 89 + x  > = 270
176 + x >= 270
x >= 94
94점 이상 맞아야 한다

]]> 2021-05-12 01:02:33 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515795947 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515796969 유리하다라는 개념 = 더 싸게 할 수 있다.
일반 입장료 = 1000x
단체 입장료( 할인 )  = 1000 * 30 * 75/100 = 22500
1000x > 22500
10x > 225
x > 225/10
22.5명보다 더 많이 가야 하지만 사람이기에 정수가 되야 한다.
23명부터 단체 입장권을 사는 게 유리하다.

]]> 2021-05-12 01:02:56 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515796969 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515797310 2021-05-12 01:03:03 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515797310 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515797600 2021-05-12 01:03:09 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515797600 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515800695 1000x>30X1000X3/4
1000x>22500
x=22.5
따라서 23명부터 사는게 유리하다]]> 2021-05-12 01:04:21 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515800695 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515800732 2021-05-12 01:04:21 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515800732 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515807123 2021-05-12 01:06:45 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515807123 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515807768 최대 xkm 까지 갈수있다 했을때
올라갈때 거리:x,속력:2,시간:x/2
내려갈때 거리:x,속력:3,시간:x/3
라하면  
x/2+x/3<=3
3x+2x<=18
5x<=18
x<=18/5
x<=3.6 이다. 최대 올라갈 수 있는거리는 3.6km 이다. ]]> 2021-05-12 01:07:00 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515807768 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515807933 사람수 x명
x명의 값:1000x
3명의 값:22500

1000x>22500
x>22 1/2
답은 23명부터]]> 2021-05-12 01:07:03 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515807933 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515812109 (87+89+x)/3>=90
87+89+x>=270
176+x>=270
x>=270-176
x>=94
94점 이상 맞아야한다]]> 2021-05-12 01:08:37 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515812109 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515868084 2021-05-12 01:29:00 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515868084 https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515910568 x명 입장한다고 할때 
일반 입장료: 1000x원
30명 단체 입장할땐
1000 x 30 x 75/100 =22500이다.
단체 입장권이 더 유리하려면
일반입장료보다 작다.
1000x>22500
10x>225
x>225/10
x>22.5      
따라서 23명 부터 사는게 유리하다.]]> 2021-05-12 01:44:32 UTC https://padlet.com/yuna7933/nq45y827q1kimgoi/wish/1515910568