浜烘暀鐗堜簲骞寸骇鏁板涓婂唽绗簲鍗曞厓绠�鏄撴柟绋嬫祴璇曞嵎锛堥檮绛旀锛?/p>
锛堟椂闂达細锛欙紣鍒嗛挓
鍒嗗�硷細
100
鍒嗭級
瀛︽牎锛氾伎锛匡伎锛匡伎锛匡伎锛匡伎锛垮鍚嶏細锛匡伎锛匡伎锛匡伎锛匡伎锛匡伎
濉竴濉�?/p>
锛堟瘡绌?/p>
1
鍒嗭紝鍏?/p>
20
鍒嗭級
1
.
鐪佺暐涔樺彿鍐欏嚭涓嬮潰鍚勫紡銆?/p>
a
脳
x=
锛?/p>
锛?/p>
x
脳
x=
锛?/p>
锛?/p>
b
脳
8=
锛?/p>
锛?/p>
3
脳
d=
锛?/p>
锛?/p>
b
脳
1=
锛?/p>
锛?/p>
x
脳
4=
锛?/p>
锛?/p>
2.
璐ц溅姣忓皬鏃惰
s
km,
瀹㈣溅姣忓皬鏃惰
m
km,
瀹㈣溅
3
灏忔椂鍜岃揣杞?/p>
5
灏忔椂涓�鍏?/p>
琛岄┒浜?/p>
(
)km
銆?/p>
3.
涓�杈嗗叕浜よ溅涓婃湁
45
鍚嶄箻瀹?/p>
,
鍦ㄥぇ瀛﹀煄绔欎笅杞?/p>
a
鍚?/p>
,
鍙堜笂鏉?/p>
b
鍚?/p>
,
杩欐椂杞︿笂鏈?/p>
涔樺
(
)
鍚嶃�?/p>
4.
涓�杈嗘苯杞︽瘡灏忔椂琛岄┒
x km
锛?/p>
3.6
灏忔椂琛岄┒锛?/p>
锛?/p>
km
锛岃椹?/p>
120km
锛岄渶瑕?/p>
锛?/p>
锛夊皬鏃躲�?/p>
5.
姣忎釜瓒崇悆
x
鍏?/p>
,
涔?/p>
4
涓冻鐞?/p>
,
浠樺嚭
200
鍏?/p>
,
搴旀壘鍥?/p>
(
)
鍏冦�?/p>
6.
褰?/p>
x=5
鏃?/p>
,x
2
=(
),2x+8=(
)
銆?/p>
7.a
脳
(7+b),
褰?/p>
a=5
鏃?/p>
,b=(
)
鎵嶈兘浣?/p>
a
脳
(7+b)=52.5
銆?/p>
8.
涓変釜杩炵画鑷劧鏁?/p>
,
宸茬煡涓棿涓�涓暟鏄?/p>
m,
閭ｄ箞鍓嶄竴涓暟鏄?/p>
(
),
鍚庝竴涓?/p>
鏁版槸
(
),
涓夋暟涔嬪拰鏄?/p>
(
)
銆?/p>
9.
宸茬煡
x
锛?/p>
4
鏄柟绋?/p>
ax
锛?/p>
18
锛?/p>
6
鐨勮В锛屽垯
a
鐨勫�兼槸锛?/p>
锛?/p>
10.
鍦ㄢ棆閲屽～涓娾�滐紴鈥?/p>
鈥滐紲鈥?/p>
鈥滐紳鈥?/p>
銆?/p>
褰?/p>
x
锛?/p>
1.5
鏃讹紝
2
锛?/p>
x+2
锛夆棆
10
褰?/p>
a
锛?/p>
4
鏃讹紝
5.6a
锛?/p>
3.5a
鈼?/p>
8.4
浜屻�佹妸宸﹀彸涓よ竟鎰忎箟鐩哥瓑鐨勭敤鐩寸嚎杩炶捣鏉ャ�?/p>
锛堝叡
7
鍒嗭級
a
涓?/p>
a
鐩镐箻
a+
2
b
a
涓?/p>
a
鐩稿姞
a
2
a
鐨?/p>
2
鍊?/p>
2
a+
3
a
鐨勪簩鍒嗕箣涓�
2
a
姣?/p>
a
鐨?/p>
2
鍊嶅
3
鐨勬暟
a+a
a
涓?/p>
b
鐨勫拰鐨?/p>
2
鍊?/p>
a/2
a
涓?/p>
b
鐨?/p>
2
鍊嶇殑鍜?/p>
(
a+b
)
脳
2
涓夈�佸垽鏂銆?/p>
(
姝ｇ‘鐨勭敾鈥溾垰鈥?/p>
,
閿欒鐨勭敾鈥?/p>
鉁?/p>
鈥?/p>
)
锛堝叡锛曞垎锛?/p>
1.
鏂圭▼涓�瀹氭槸绛夊紡
,
绛夊紡涓嶄竴瀹氭槸鏂圭▼銆傗�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�?/p>
(
)
2.
灏忔槑浠婂勾
a
宀?/p>
,
鍝ュ摜姣斾粬澶?/p>
b
宀?/p>
,c
骞村悗
,
鍝ュ摜姣斾粬澶?/p>
b+c
宀併�傗�?/p>
(
)
3.x
鐨?/p>
3
鍊嶄笌
3x
鐩哥瓑銆傗�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�?/p>
(
)
4. 3x+ 4x= 7x,3a+4b=7ab
銆傗�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�?/p>
(
)
5. 42+3
锛?/p>
2x,
涓嶆槸鏂圭▼鏄瓑寮忋�傗�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�?/p>
(
)
鍥涖�侀�夋嫨棰樸�?/p>
(
鎶婃纭瓟妗堢殑搴忓彿濉湪鎷彿閲?/p>
)
锛堝叡锛戯紣鍒嗭級
1.
姝ｆ柟褰㈢殑鍛ㄩ暱涓猴迹锛岃竟闀?/p>
a
鏄?/p>
(
)
銆?/p>
A.4
锛?/p>
B.
锛Ｃ?/p>
4 C.
锛Ｃ?/p>
a
D.
锛Ｃ楋迹
2.
褰?/p>
a=8,b=6
鏃?/p>
,2a+3b
绛変簬
(
)
銆?/p>
A.36
B.34
C.54
D.240
3.
鐢叉暟鏄?/p>
a,
鏄箼鏁扮殑
3
鍊?/p>
,
涔欐暟鏄?/p>
(
)
銆?/p>
A.3a
B.a
梅
3
C.2a
D.3+a
4.
鏍规嵁
8x-6=50,
鍙煡
3x+7
鐨勫�兼槸
(
)
銆?/p>