(250-2x):6=85
Những câu hỏi liên quan
Thách các bạn trả lời đc câu hỏi này...
What is inanimate, yet can stand up,
Can start out copper and end up as steel,
So fragile, a child could break one,
But many have the strength to lift a man?
What is it?
1. Dead on the field lie ten soldiers in white, felled by three eyes, black as night. What happened?2. Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox. What are we?3. What word in the English language uses all five vowels plus Y in alphabetical order, and uses each only once?4. What is the only English word, with two synonyms that are antonyms of each other?5. I know a thousand faces, And count the tailed heads, Feasting bright upon the eyes,...
Đọc tiếp
1. Dead on the field lie ten soldiers in white, felled by three eyes, black as night. What happened?
2. Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox. What are we?
3. What word in the English language uses all five vowels plus Y in alphabetical order, and uses each only once?
4. What is the only English word, with two synonyms that are antonyms of each other?
5. I know a thousand faces, And count the tailed heads, Feasting bright upon the eyes, Of many who have died. Wielding well a mighty power, Who hath but humble stature. Masses fall upon their knees, To scarce behold my only side. What is it?
tiếng anh lớp 5 mà, chứ đâu phải tiếng anh lớp 4
rồi thì kệ nó
Xem thêm câu trả lời
mik cần giúp
250 - ( x + 20 ) : 2 = 85
`@` `\text {Ans}`
`\downarrow`
`250 - (x+20) \div 2 = 85`
`(x + 20) \div 2 = 250 - 85`
`(x + 20) \div 2 = 165`
`x +20 = 165 \times 2`
`x + 20 = 330`
`x = 330 - 20`
`x = 310`
Vậy, `x = 310.`
Đúng 4
Bình luận (0)
\(250-\left(x+20\right):2=85\)
\(\left(x+20\right):2=250-85\)
\(\left(x+20\right):2=165\)
\(x+20=165\times2\)
\(x+20=330\)
\(x=330-20\)
\(x=310\)
Đúng 2
Bình luận (0)
250 - (x+20) : 2= 85
<=> (x+20):2= 250-85
<=> (x+20)=( 250 - 85) x 2
<=> x+20= 165 x 2= 330
<=>x= 330-20=310
Đúng 2
Bình luận (1)
\(\dfrac{11}{8}+\dfrac{13}{6}=\dfrac{85}{2x}\)
\(\dfrac{3x}{182}=\dfrac{-6}{14}.\dfrac{35}{91}\)
Tìm x , biết
a. x - 4300 - (5250 : 1050 : 250) =4240
b. 460 + 85 .4 : (x + 200) =4
a. x - 4300 - (5250 : 1050 : 250) =4240
x - 4300 - (5 : 250) =4240
x - 4300 - 0,02 =4240
x - 4300 = 4240 + 0,02
x - 4300 =4240,02
x=4240,02+4300
x=854,02
b. 460 + 85 .4 : (x + 200) =4
Đúng 0
Bình luận (0)
a. x - 4300 - (5250 : 1050 : 250) = 4240
=> x - 4300 - 1/50 = 4240
x - 4300 = 4240 + 1/50
lk ùi ko lm nữa !! =="
Đúng 0
Bình luận (0)
NN
6 tháng 10 2023 lúc 22:05
Tính giá trị biểu thức a - b - c biết :
b) a = -350 , b = -370 , c = 85
c) a = -720 , b = - 370, c = -250
Xem chi tiết
a. Thay a=-350,b=-370,c=85 vào bt ta đc
a-b-c=-350+370-85=-65
b.Thay a=-720,b=-370,c=-250 vào bt ta đc
a-b-c=-720+370+250=-100
Đúng 1
Bình luận (0)
Lời giải:
b.
$a-b-c=-350-(-370)-85=-350+370-85=370-350-85=20-85=-65$
c.
$a-b-c=(-720)-(-370)-(-250)=-720+370+250=-720+620=-(720-620)=-100$
Đúng 1
Bình luận (0)
Tính nhẩm: 1) 373737 . 73 - 37 . 737373 2)19 . 41414141 - 41 . 19191919 3)123456 . 456789456789 - 456789 . 123456123456...
Đọc tiếp
Tính nhẩm: 1) 373737 . 73 - 37 . 737373 2)19 . 41414141 - 41 . 19191919 3)123456 . 456789456789 - 456789 . 123456123456 4)250 . 12 . 7 5)24 . 125 . 9 6)125 . 44 . 18 7)8 . 24 . 6 + 12 . 4 . 52 + 2 . 22 . 24 8)18. 58 . 2 - 9 . 27 . 4 + 12 . 69 . 3 9)30 . 85 . 3 + 18 . 72 . 5 - 45 . 37 . 2 - 9 . 20 . 10
1) \(373737.73-37.737373\)
\(=37.10101.73-37.73.10101\)
\(=0\)
2) \(19.41414141-41.19191919\)
\(=19.41.1010101-41.19.1010101\)
\(=0\)
3) \(123456.456789456789-456789.123456123456\)
\(=123456.456789.1000001-456789.123456.1000001\)
\(=0\)
4) \(250.12.7\)
\(=250.4.3.7\)
\(=\left(250.4\right).\left(3.7\right)\)
\(=1000.21\)
\(=21000\)
5) \(24.125.9\)
\(=3.8.125.9\)
\(=\left(3.9\right).\left(8.125\right)\)
\(=27.1000\)
\(=27000\)
6) \(125.44.18\)
\(=125.4.11.2.9\)
\(=\left(125.4.2\right).\left(11.9\right)\)
\(=1000.99\)
\(=99000\)
7) \(8.24.6+12.4.52+2.22.24\)
\(=48.24+48.52+48.22\)
\(=48\left(24+52+22\right)\)
\(=48.98\)
\(=48\left(100-2\right)\)
\(=48.100-48.2\)
\(=4800-96\)
\(=4704\)
8) \(18.58.2-9.27.4+12.69.3\)
\(=36.58-36.27+36.69\)
\(=36\left(58-27+69\right)\)
\(=36.100=3600\)
9) \(30.85.3+18.72.5-45.37.2-9.20.10\)
\(=90.85+90.72-90.37-90.20\)
\(=90\left(85+72-37-20\right)\)
\(=90.100=9000\)
Đúng 0
Bình luận (0)
Tính
a) 125^100 . 2^160 / 5^289 . 4^80
b) 250:{175-[50+(85-2.5)]}
a: \(=\dfrac{5^{300}\cdot2^{160}}{5^{289}\cdot2^{160}}=5^{11}\)
b: \(=\dfrac{250}{175-50-85+2\cdot5}=\dfrac{250}{125-85+10}=\dfrac{250}{50}=5\)
Đúng 0
Bình luận (0)
Tìm x biết:
a,x-5/7=1/9
b,2x/5=6/2x+1
c,11/8+13/6=85/x
d,2x-2/11=1.1/5
e,x/15=3/5+-2/3
f,x/182=-6/14.35/91
a, \(x\) - \(\dfrac{5}{7}\) = \(\dfrac{1}{9}\)
\(x\) = \(\dfrac{1}{9}\) + \(\dfrac{5}{7}\)
\(x\) = \(\dfrac{52}{63}\)
Đúng 0
Bình luận (0)
b, \(\dfrac{2x}{5}\) = \(\dfrac{6}{2x+1}\)
2\(x\).(2\(x\) + 1) = 30
4\(x^2\)+ 2\(x\) - 30 = 0
4\(x^2\) + 12\(x\) - 10\(x\) - 30 = 0
(4\(x^2\) + 12\(x\)) - (10\(x\) + 30) =0
4\(x\).(\(x\) + 3) - 10.(\(x\) +3) = 0
2 (\(x\) + 3).(2\(x\) - 5) = 0
\(\left[{}\begin{matrix}x+3=0\\2x-5=0\end{matrix}\right.\)
\(\left[{}\begin{matrix}x=-3\\x=\dfrac{5}{2}\end{matrix}\right.\)
Vậy \(x\) \(\in\) {-3; \(\dfrac{5}{2}\)}
Đúng 0
Bình luận (0)
c, \(\dfrac{11}{8}\) + \(\dfrac{13}{6}\) = \(\dfrac{85}{x}\)
\(\dfrac{85}{x}\) = \(\dfrac{85}{24}\)
\(x\) = 24
Đúng 0
Bình luận (0)
Xem thêm câu trả lời
Bài 3, trang 24, sgk lớp 5
3. Lớn, bé, bằng ?
2 kg 50 g ... 2500 g
13 kg 85 g ... 13 kg 805 g
6090 kg ... 6 tấn 8 g
1/4 tấn ... 250 kg
*Nêu dùm ạ !
lười vậy bài tập mà cũng không làm
xấu mặt quá bà con ơi
Đúng 0
Bình luận (0)
2 kg 50 g < 2500 g 6090 kg > 6 tan 8 g 1/4 tan=250kg
2050g
13 kg 85 g <. 13 kg 805 g
13085g 13805g