英语数学作业,正确率要高,请各位帮忙~~~~~
1、一个角是它的补角是¾,求这个角的度数。2、计算:(3)38°30′-25°31′(4)180°-95°34′3、一个长方体的长,宽,高分别为8厘米,6厘...
1、一个角是它的补角是¾ ,求这个角的度数。
2、计算:(3)38°30′-25°31′ (4)180°-95°34′
3、一个长方体的长,宽,高分别为8厘米,6厘米,4厘米,现将其切成2个长方体,则怎样切其表面积最大?每个小长方体的表面积最大是多少平方厘米?
4、如果a、b互为相反数,c、d互为倒数,而且m的绝对值为2,则cd分之10m+m-a-b 的值为多少?
5.计算:1分之0.01÷[-2¼-(-2½-1)]×0.2
6.简便运算:(-5分之3)²×(-1又8分之27)+(-4分之5)²×(-1又8分之27)
7.解方程:8(x+0.5)=5(x-0.4)
8.求不等式组 {3(x-2)≥2x-17
{ 7分之4x-1又3分之1≥¾x+2又3分之2
9.解方程组:{3x+2y+5z=2
{x-2y-z=6
{4x+2y-7z=30
10.今年父亲与儿子的年龄之比为7∶2,再过18年,父亲的年龄是儿子年龄的2倍,那么今年父子两人各几岁?
11、某校学生去公园游玩,步行的同学先从学校出发1小时,然后骑自行车的同学从学校出发,沿同一条路骑车,30分钟后与步行的同学同时到达目的地,已知步行同学的速度是每小时5千米,求骑自行车同学的速度
12、某课桌装配车间共有木工18人,每个木工一天能装配双人课桌4个或单人椅10只,怎么样分配工作才能使一天装配的课桌椅配套?
13.计算:5*(-1)的2n+1次方+3*(-1)的2n次方+(-1)的2n-1次方(n为自然数)
I. Choose the best answer(选择最恰当的答案):
( ) 1. Mr. Li likes thin and healthy.
A. is B. be C. being D. was
( )2. Is the butter from Australia from New Zealand?
A. and B. or C. then D. for
( )3. Meat is than vegetable.
A. healthy B. healthier C. less healthy D. less healthier
( )4. Put the beef two pieces of bread. That’s the beef sandwich.
A. in B. on C. between D. beside
( )5. I don’t like this food. It’s too .
A. delicious B. salt C. taste D. spicy
( )6. There is only milk in the fridge. We should go and buy some.
A. a few B. a little C. a lot of D. plenty of
( )7. Sally’s diet is than mine.
A. healthy B. less healthier C. healthier D. more healthier
( )8. A: do the crisps taste?
B: They taste .
A. How, salt B. What, salty C. What, salt D. How, salty
( )9. A: money have you got?
B: I’ve got only money
A. How much; a little B. How many; a little
C. How much; a few D. How many; a few
( )10. What do you think Beson’s diet? it healthy?
A. about; Is B. for; Does C. about; Does D. of; is
I. Choose the best answers. (选择最佳答案)
( ) 1.On Sundays, Susie likes to with her cousin.
A. going shopping B. shopping C. go to shopping D. go shopping
( ) 2. --- is the spinach?
--- Ten yuan.
A. How many B. How C. How fresh D. How much
( ) 3. Do you have some cheaper ones? They are too .
A. more expensive B. most expensive C. expensive D. cheap
答得越具体、正确率越高,给的分就越多,想要多少给多少~~~~~~ 展开
2、计算:(3)38°30′-25°31′ (4)180°-95°34′
3、一个长方体的长,宽,高分别为8厘米,6厘米,4厘米,现将其切成2个长方体,则怎样切其表面积最大?每个小长方体的表面积最大是多少平方厘米?
4、如果a、b互为相反数,c、d互为倒数,而且m的绝对值为2,则cd分之10m+m-a-b 的值为多少?
5.计算:1分之0.01÷[-2¼-(-2½-1)]×0.2
6.简便运算:(-5分之3)²×(-1又8分之27)+(-4分之5)²×(-1又8分之27)
7.解方程:8(x+0.5)=5(x-0.4)
8.求不等式组 {3(x-2)≥2x-17
{ 7分之4x-1又3分之1≥¾x+2又3分之2
9.解方程组:{3x+2y+5z=2
{x-2y-z=6
{4x+2y-7z=30
10.今年父亲与儿子的年龄之比为7∶2,再过18年,父亲的年龄是儿子年龄的2倍,那么今年父子两人各几岁?
11、某校学生去公园游玩,步行的同学先从学校出发1小时,然后骑自行车的同学从学校出发,沿同一条路骑车,30分钟后与步行的同学同时到达目的地,已知步行同学的速度是每小时5千米,求骑自行车同学的速度
12、某课桌装配车间共有木工18人,每个木工一天能装配双人课桌4个或单人椅10只,怎么样分配工作才能使一天装配的课桌椅配套?
13.计算:5*(-1)的2n+1次方+3*(-1)的2n次方+(-1)的2n-1次方(n为自然数)
I. Choose the best answer(选择最恰当的答案):
( ) 1. Mr. Li likes thin and healthy.
A. is B. be C. being D. was
( )2. Is the butter from Australia from New Zealand?
A. and B. or C. then D. for
( )3. Meat is than vegetable.
A. healthy B. healthier C. less healthy D. less healthier
( )4. Put the beef two pieces of bread. That’s the beef sandwich.
A. in B. on C. between D. beside
( )5. I don’t like this food. It’s too .
A. delicious B. salt C. taste D. spicy
( )6. There is only milk in the fridge. We should go and buy some.
A. a few B. a little C. a lot of D. plenty of
( )7. Sally’s diet is than mine.
A. healthy B. less healthier C. healthier D. more healthier
( )8. A: do the crisps taste?
B: They taste .
A. How, salt B. What, salty C. What, salt D. How, salty
( )9. A: money have you got?
B: I’ve got only money
A. How much; a little B. How many; a little
C. How much; a few D. How many; a few
( )10. What do you think Beson’s diet? it healthy?
A. about; Is B. for; Does C. about; Does D. of; is
I. Choose the best answers. (选择最佳答案)
( ) 1.On Sundays, Susie likes to with her cousin.
A. going shopping B. shopping C. go to shopping D. go shopping
( ) 2. --- is the spinach?
--- Ten yuan.
A. How many B. How C. How fresh D. How much
( ) 3. Do you have some cheaper ones? They are too .
A. more expensive B. most expensive C. expensive D. cheap
答得越具体、正确率越高,给的分就越多,想要多少给多少~~~~~~ 展开
4个回答
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1.设角为X X=(180-X)*3/4 X=77°1′
2.(3)12°59′(4)84°26′
3.平行于最大面积的面切
两个长方体最大表面积为152
4.10m+m-a-b=11m cd=1 cd分之10m+m-a-b=11m
∴22或-22
5.题目有问题
6.-5383/640
7.X=-2
8.X大于等于-11或者X小于等于-112/5
9.X=4 Y=0 Z=-2
10.设儿子岁数2x,父亲年龄为7x
7x+18=2(18+2x) x=6 儿子12岁 父亲42岁
11.设自行车速度X
1.5*5=0.5X X=15
12.设桌子x个 椅子2x个
(18-x/4)*10=2x x=40 桌子40 椅子80
13.-8
I. Choose the best answer(选择最恰当的答案):
CBCCD BCDAD
I. Choose the best answers. (选择最佳答案)
DDC
2.(3)12°59′(4)84°26′
3.平行于最大面积的面切
两个长方体最大表面积为152
4.10m+m-a-b=11m cd=1 cd分之10m+m-a-b=11m
∴22或-22
5.题目有问题
6.-5383/640
7.X=-2
8.X大于等于-11或者X小于等于-112/5
9.X=4 Y=0 Z=-2
10.设儿子岁数2x,父亲年龄为7x
7x+18=2(18+2x) x=6 儿子12岁 父亲42岁
11.设自行车速度X
1.5*5=0.5X X=15
12.设桌子x个 椅子2x个
(18-x/4)*10=2x x=40 桌子40 椅子80
13.-8
I. Choose the best answer(选择最恰当的答案):
CBCCD BCDAD
I. Choose the best answers. (选择最佳答案)
DDC
展开全部
1.设这个角为x度,则另一个角为(180-x)度
x=3/4(180-x)
x=135-3/4x
7/4x=135
x=77度1分
答:这个角是77度1分。
2.(3)38度30分-25度31分=12度59分
(4)180度-95度34分=84度26分
3.垂直于高切
(8x6+8x2+6x2)x2
=76x2
=152(平方厘米)
4.根据题意得:
a+b=0 cd=1 m=2,-2
当m为2时 当m为-2时
原式=10x2+2-0/1 原式=10x(-2)+(-2)-0/1
=22 =-22
5.没读懂
6.用乘法分配律
7. 8(x+0.5)=5(x-0.4)
8x+4=5x-2
8x-5x=-2-4
3x=-6
x=-2
8.x大于等于-11
9.x=4 y=0 z--2
10.设儿子今年2x岁,父亲7X岁
7x+18=2(18+2x)
x=6 7x=42岁
儿子6岁,父亲42岁
11.1.5x5除以0.5=15(千米/时)
ENGLISH
1.CBBBB
CCABD
2.DDC
这是我自己做的,希望对你有帮助哦!(我打了很久)
x=3/4(180-x)
x=135-3/4x
7/4x=135
x=77度1分
答:这个角是77度1分。
2.(3)38度30分-25度31分=12度59分
(4)180度-95度34分=84度26分
3.垂直于高切
(8x6+8x2+6x2)x2
=76x2
=152(平方厘米)
4.根据题意得:
a+b=0 cd=1 m=2,-2
当m为2时 当m为-2时
原式=10x2+2-0/1 原式=10x(-2)+(-2)-0/1
=22 =-22
5.没读懂
6.用乘法分配律
7. 8(x+0.5)=5(x-0.4)
8x+4=5x-2
8x-5x=-2-4
3x=-6
x=-2
8.x大于等于-11
9.x=4 y=0 z--2
10.设儿子今年2x岁,父亲7X岁
7x+18=2(18+2x)
x=6 7x=42岁
儿子6岁,父亲42岁
11.1.5x5除以0.5=15(千米/时)
ENGLISH
1.CBBBB
CCABD
2.DDC
这是我自己做的,希望对你有帮助哦!(我打了很久)
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英语
CBDCD/BCDDA/DDC
CBDCD/BCDDA/DDC
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