Cho minh hoi bai nay. Chi can tra loi 1 cau cung duoc! Tick cho ai tra loi som nhat, day du nhat.
1. Cho so huu ti y=2a-1/-3. Voi gia tri nao cua a thi y la so duong, y la so am, khong phai so duong cung phai so am?
2. Cho so huu ti x=a-5/a (a khac 0). Voi gia tri nao cua a thi x la so nguyen?
3. Cho so huu ti x=a-3/2a (a khac 0). Voi gia tri nao cua a thi x la so nguyen?
Chu so thap phan thu 100sau dau phay cua phan so 1phan7 (viet duoi dang so thap phan) la chu so nao ????
Giup minh voi moi nguoi !!!! Minh TICK cho ^.^
Đợt 1:
\(\sqrt{2}\)=?
làm tron chu so thap phan thu 7
Mik se chon 1 ban bat ki ca cau tra loi dung de tik sau 15 phut
dot 2 se bat dau sau khi co ket quả dot 1
Tam giac ABC co so do cac goc A, B, C ti le voi 3;4;8. Tinh so do cac goc cua tam giac. ( de cua mik ghi dung zoi do. Cac pan giai gium mik nha. Mik se like cho pan nao tra loi dung nhat )
viet so 6,678 duoi dang so thap phan gon nhat
mat cheo cua mot mat ban hinh chu nhat co chieu dai 1m, chieu rong 5dm la bao nhieu. nhap ket qua la so thap phan lam tron den chu so thu nhat sau dau phay
san luong lua cua khu vuc a lon hon san luong luc cua khu vua b la 26% mac du dien tich cua khu vuc a chi lon hon khu vuc b la 5% . hoi nanh suat thu hoach cua khu vuc a nhieu hon khu vua b la may phan tram.
Giup minh nha , ai tra loi dung nhanh day du minh like cho 3 cai
a) (-2,5*0,48*0,4)+[0,125*3.52*(-8)] (Tinh nhanh)
bang bao nhieu vay
ai tra loi dung nhanh nhat minh tich cho
Chao cac gia su va cac ban.Minh co 1bai toan chua lam duoc.Nhu lan truoc,minh da dat cau hoi ve hinh hoc.Lan nay minh xin dat mot cau nua,mong moi nguoi giup minh bai toan nay :
Cho tam giac ABC vuong tai A,co goc B =60 do.
a, Tinh so do goc C va so sanh do dai 3canh cua tam giac ABC
b,Ve BD la tia phan giac cua goc ABC(D thuoc AC).Qua D ve DK vuong goc voi BC(K thuoc BC) .Chung minh:tam giac BAD=tam giac BKD
c,C/minh :tam giac BDC can va K la trung diem BC
d,Tia KD cat BA tai I.Tinh do dai canh ID biet AB=3cm(lam tron ket qua den chu so thap phan thu nhat).
Neu ai, gia su co the tra loi duoc cau hoi nay thi xin nhan tin lai cho minh a.Minh xin cam on nhieuuuuuuuu(ve hinh nua nhe! )