早教吧作业答案频道 -->其他-->
正确、合理、灵活的计算,求未知数1.25×4×0.6×0.8×2.5516×[225+(23-25)÷13]415+4.2×757+127×415312×115÷(4.5-0.625÷516)÷30%115:127=X:9145×0.36-0.75X=35.
题目详情
正确、合理、灵活的计算,求未知数 1.25×4×0.6×0.8×2.5 |
| 4
| ||||||||||||||||||
3
| 1
| 5×0.36-0.75X=
|
▼优质解答
答案和解析
(1)1.25×4×0.6×0.8×2.5,
=(1.25×0.8)×(2.5×4)×0.6,
=1×10×0.6,
=6;
(2)
×[2
+(
-
)÷
],
=
×[2
+(
−
)÷
],
=
×[2
+(
−
)×3],
=
×[2
+
×3],
=
×[2
+
],
=
×
,
=1;
(3)4
+4.2×7
+1
×4
,
=4.2+4.2×7
+1
×4.2,
=4.2×(1+7
+1
),
=4.2×10,
=42;
(4)3
×1
÷(4.5-0.625÷
)÷30%,
=
×
÷(4.5-
×
)×
,
=
÷(4.5-2)×
,
=
×
×
,
=(
×
)×
,
=14×
,
=
,
=5
;
(5)1
:1
=X:
,
1
x=1
×
,
1
x=
×
,
x×
=
×
×
,
x=
×(
×
),
x=
×
,
x=
;
(6)5×0.36-0.75X=
,
1.8-0.75x=0.6,
0.75x=1.2,
x×
=1.2×
,
x=1.6;
=(1.25×0.8)×(2.5×4)×0.6,
=1×10×0.6,
=6;
(2)
5 |
16 |
2 |
5 |
2 |
3 |
2 |
5 |
1 |
3 |
=
5 |
16 |
2 |
5 |
2 |
3 |
2 |
5 |
1 |
3 |
=
5 |
16 |
2 |
5 |
10 |
15 |
6 |
15 |
=
5 |
16 |
2 |
5 |
4 |
15 |
=
5 |
16 |
2 |
5 |
4 |
5 |
=
5 |
16 |
16 |
5 |
=1;
(3)4
1 |
5 |
5 |
7 |
2 |
7 |
1 |
5 |
=4.2+4.2×7
5 |
7 |
2 |
7 |
=4.2×(1+7
5 |
7 |
2 |
7 |
=4.2×10,
=42;
(4)3
1 |
2 |
1 |
5 |
5 |
16 |
=
7 |
2 |
6 |
5 |
5 |
8 |
16 |
5 |
10 |
3 |
=
21 |
5 |
10 |
3 |
=
21 |
5 |
2 |
5 |
10 |
3 |
=(
21 |
5 |
10 |
3 |
2 |
5 |
=14×
2 |
5 |
=
28 |
5 |
=5
3 |
5 |
(5)1
1 |
5 |
2 |
7 |
9 |
14 |
1
2 |
7 |
1 |
5 |
9 |
14 |
1
2 |
7 |
6 |
5 |
9 |
14 |
9 |
7 |
7 |
9 |
6 |
5 |
9 |
14 |
7 |
9 |
x=
6 |
5 |
9 |
14 |
7 |
9 |
x=
6 |
5 |
1 |
2 |
x=
3 |
5 |
(6)5×0.36-0.75X=
3 |
5 |
1.8-0.75x=0.6,
0.75x=1.2,
3 |
4 |
4 |
3 |
4 |
3 |
x=1.6;
看了正确、合理、灵活的计算,求未知...的网友还看了以下:
分数的运算和解方程1、2又2/3*8*1又3/8= 2、1又2/5*25+5又3/4÷5又3/4= 2020-05-16 …
1/1=11/2+2/2+1/2=21/3+2/3+3/3+2/3+1/3=31/4+2/4+3/ 2020-06-02 …
49.7-[-23/3/4+(18.7-25.25)]12+1又3/4-8又5/12-6.75-( 2020-06-04 …
如何把word里所有答案删除17,9,-1,5,()A、4;B、2;C、-1;D、-3答:选D,7 2020-06-18 …
我正在用matlab作一组数据的非线性拟合该组数据是:rA = [3.86 3.90 4.17 4 2020-06-27 …
4道计算我实在算不出来了11999*(5.22*1045+523/100)/(5.23*1045- 2020-07-18 …
有理数的乘方计算题(1)6分之7乘(6分之1-3分之1)乘十四分之3除5分之3(2)(-10)3( 2020-07-30 …
有一个容量为66的样本,数据的分组及各组的频数如下:[11.5,15.5)2;[15.5,19.5 2020-07-30 …
能简则简.(1)3/4+3/4÷3(2)1/3÷1/2-5/4x2/5(3)4/9÷[5/9-能简则 2020-11-26 …
(用递等式计算,写出必要的计算过程,能简则简)(1÷0.5+0.5÷1)×0.140.4×0.4×1 2020-11-26 …