45 km đúng luôn nhớ tick cho mình nhá

tòa nhà 5 tầng 3,9.5=19.5m

tòa nhà 4 tầng 3,9.4=15.6m

nha của hồng cao 3,3.4=13.2m

nhà cô thúy cao 3,3.5=16.5m

100kg=0.1 tấn

0.1 tấn thóc =60kg

nên 1.5 tấn thóc = 60.1.5:0.1=900kg

Vậy 1.5 tấn thóc thì cho 900kg gạo

a) \(\left|3x-4\right|\ge0\Rightarrow x\ge\dfrac{4}{3}\)

\(\Rightarrow MinA=0\) khi \(x=\dfrac{4}{3}\)

b) ta có \(\left|3+2x\right|\ge0\Rightarrow x\ge\dfrac{-3}{2}\)

MinB=1 khi x=\(\dfrac{-3}{2}\)

Dear teacher !
We can not forget the professors of religious traditions have taught many generations from now, "you do not feel it." The teachers have wings to our dreams of flying high, the site provides knowledge for we have a good life and help us succeed in their studies. But after the birth of the few who remember their former teachers? Nobody was looking for old class to revisit the old school who have sacrificed enthusiastic people to help us become useful? to express our gratitude to teachers offering a bouquet of flowers or gifts in the spirit of poetry or a bit of material then was probably not hard for each one of us!

tick hộ mk vài li-ke đi các bạn

Số

Để đốt cháy hoàn toàn a gam cacbon thì cần vừa đủ  1 , 5 . 10 24 phân tử khí oxi. Giá trị của a là

A. 25

B. 30

C. 20

D. 21