3/5 off ..... = ...........
giúp mk với
You should turn unwanted lights off, or you will waste a lot of electricity
=> If
Giúp mk với, mk đang cần gấp
Viết lại câu sao cho nghĩa k thay đôi nhé !!
7/6 + 5/6 : 5- 3/8. (-3)^2
giúp mk với ai nhanh mk tk cho, mk hứa
\(\frac{7}{6}+\frac{5}{6}:5-\frac{3}{8}.\left(-3\right)^2\)
\(=\frac{7}{6}+\frac{5}{6}.\frac{1}{5}-\frac{3}{8}.9\)
\(=\frac{7}{6}+\frac{1}{6}-\frac{27}{8}\)
\(=\frac{8}{6}-\frac{27}{8}\)
\(=\frac{32}{24}-\frac{81}{24}\)
\(=\frac{-49}{24}\)
Chúc bạn học tốt !!!
Giúp mk với ạ mk đang cần gấp
Write two sentences as one using to-infinitive
1, I swept the broken glass off the path. I wanted to prevent an accident
2, He bought a truck. He did this to carry out his business
3, Laura went to the bank. She wanted to cash a cheque
4, The staffs are working at weekend. They want to complete the project in time
4x - 3 = 3x + 5 GIÚP MK VỚI
\(4x-3=3x+5\\ \Rightarrow4x-3x=5+3\\ \Rightarrow x=8\)
( 15/4 x 2/3 ) : 5 = ?
các bạn giúp mk với mk đang cần gấp!
(15/4 x 2/3) : 5=\(\dfrac{5}{2}\):5=1/2
\(\left(\dfrac{15}{4}.\dfrac{2}{1}\right):5=\dfrac{15}{2}:5=\dfrac{15}{2}.\dfrac{1}{5}=\dfrac{3}{2}\)
-12(x-5)+7(3-x)=5
GIÚP MK VỚI SẮP NỘP RỒI ĐÚNG MK TK CHO 2-3 CÁI NHOA!
\(-12(x-5)+7(3-x)=5\)
\(\Rightarrow-12x-60+21-7x=5\)
\(\Rightarrow-12x-7x-60+21=5\)
\(\Rightarrow-12x-7x-81=5\)
\(\Rightarrow-19x-81=5\)
\(\Rightarrow81-19x=5\)
\(\Rightarrow-19x=-76\)
\(\Rightarrow x=4\)
-12(x-5)+7(3-x)=5
-12x-(-12.5)+7.3-7x=5
-12x-(-60)+21-7x=5
-12x-(-60)+21=5+7x
-12x-(-60)=5+7x-21
-12x=5+7x-21+(-60)
-12x-7x=5-21+(-60)
-19x=-76
x=-76:(-19)
x=4
vậy x=4
-12 ( x - 5 ) + 7 ( 3 - x ) = 5
-12x + 12 . 5 + 7 . 3 - 7x = 5
-12x + 60 + 21 - 7x = 5
-12x - 7x = 5 - 60 - 21
-19x = -76
x = -76 : (-19)
x = 4
(3/5 - 2/3x)^3 = -64/125
giúp mk với ai nhanh mk tk cho
\(\left(\frac{3}{5}-\frac{2}{3}x\right)^3=\left(\frac{-4}{5}\right)^3\)
\(\frac{3}{5}-\frac{2}{3}x=\frac{-4}{5}\)
\(\frac{2}{3}x=\frac{7}{5}\)
\(x=\frac{21}{10}\)
\(\left(\frac{3}{5}-\frac{2}{3}.x\right)^3=\frac{-64}{125}\)
\(\Leftrightarrow\left(\frac{3}{5}-\frac{2}{3}.x\right)^3=\left(-\frac{4}{5}\right)^3\)
\(\Rightarrow\frac{3}{5}-\frac{2}{3}.x=-\frac{4}{5}\)
\(\Leftrightarrow\frac{2}{3}.x=\frac{3}{5}-\left(-\frac{4}{5}\right)\)
\(\Leftrightarrow\frac{2}{3}.x=\frac{3}{5}+\frac{4}{5}\)
\(\Leftrightarrow\frac{2}{3}.x=\frac{7}{5}\)
\(\Leftrightarrow x=\frac{7}{5}:\frac{2}{3}\)
\(\Leftrightarrow x=\frac{21}{10}\)
Vậy \(x=\frac{21}{10}\)
(3/5 - 2/3x)^3 = -64/125
giúp mk với ai nhanh mk tk cho
\(\left(\frac{3}{5}-\frac{2}{3}x\right)^3=\frac{-64}{125}\)
\(\left(\frac{3}{5}-\frac{2}{3}x\right)^3=\left(\frac{-4}{5}\right)^3\)
\(\frac{3}{5}-\frac{2}{3}x=\frac{-4}{5}\)
\(\frac{9}{15}-\frac{10x}{15}=\frac{-12}{15}\)
\(-\frac{10x}{15}=\frac{9}{15}-\frac{-12}{15}\)
\(\text{ }-10x=9+12\)
\(-10x=21\)
\(x=\frac{-21}{10}\)
k nha