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120.Cho 2 tap hop : A={3;-5;7} ; B={-2;4;-6;8}
a) Co bao nhieu tich ab (voi a thuoc A va b thuoc B) duoc tao thanh?
b) Co bao nhieu tich lon hon 0,bao nhieu tich nho hon 0?
c) Co bao nhieu tich la boi cua 6?
d) Co bao nhieu tich la uoc cua 12?
Lam ho mk nha! Giai ca 4 phan!Trinh bay day du ho mk nha!Thanks
A={3;-5;7}; b={-2;4;6;-6;8}
a,Co bao nhieu tich a.b (voi a thuoc A va b thuoc B) duoc tao thanh?
b,Co bao nhieu tich a.b lon hon 0, bao nhieu tich nho hon 0?
c,Co bao nhieu tich a.bla boi cua 6?
d,Co bao nhieu tich a.b la uoc cua 20?
Cho A={3;-4;5}va B={-3;4;6; 8}
a, Co bao nhieu tich a×b voi a€A;b€B duoc tao thanh
b,Co bao nhieu tich lon hon 0? bao nhieu tich nho hon 0
c,Co bao nhieu tich la boi cua 3 nhung ko la boi cua 9
d,Co bao nhieu tich la uoc cua -24
cho hai tap hop A={3;-4;5} va B={-3;4;6;8}
a) co bao nhieu tich \(ab\) voi \(a\in A\) ;\(b\in B\) duoc tao thanh?
b)co bao nhieu tich >0 ? co bao nhieu tich < 0 ?
c)co bao nhieu tich la boi cua 3 ma ko la boi cua 9 ?
d)co bao nhieu tich la uoc cua -24 ?
cho 2 tap hop a= (3;-4;5) va b=(-3;4;6;8)
a:co bao nhieu tich ab voi aEA,bEB duoc tao thanh?
b:co bao nhieu tich lon hon 0?bao nhieu tich nho hon 0?
c:co bao nhieu tich la boi cua 3 nhung khong la boi cua 9
d:co bao nhieu tich la uoc cua -24
113.(tr99,ko hieu dc trong sach nha) 54 0Hay dien cac so 1,-1,2,-2,3,-3,vao cac o trong o hinh vuong ben(moi so vao 1 o ) sao cho tong 3 so tren moi dong,moi cot hoac moi duong cheo deu bang nhau114.Liet ke va tinh tong tat ca cac so nguyen x thoa man:a) -8 x 8 b) -6 x 4 c) -20 x 21118.Tim so nguyen x biet :a) 2x - 35 15 ; b) 3x + 17 2; c) | x - 1 | 0119. Tinh bang 2 cach:a) 15 x 12 - 3 x 5 x 10 ...
Đọc tiếp
113.(tr99,ko hieu dc trong sach nha)
| 5 | ||
| 4 | 0 |
Hay dien cac so 1,-1,2,-2,3,-3,vao cac o trong o hinh vuong ben(moi so vao 1 o ) sao cho tong 3 so tren moi dong,moi cot hoac moi duong cheo deu bang nhau
114.Liet ke va tinh tong tat ca cac so nguyen x thoa man:
a) -8 < x < 8 b) -6 < x < 4 c) -20 < x < 21
118.Tim so nguyen x biet :
a) 2x - 35 = 15 ; b) 3x + 17 = 2; c) | x - 1 | = 0
119. Tinh bang 2 cach:
a) 15 x 12 - 3 x 5 x 10 b) 45 - 9 x ( 13 + 5 ) c) 29 x ( 19 - 13 ) - 19 x ( 29 - 13 )
120. Cho 2 tap hop : A = { 3;-5;7} ; B = { -2;4;-6;8}
a) Co bao nhieu tich ab ( voi a thuoc A va b thuoc B ) duoc tao thanh?
b) Co bao nhieu tich lon hon 0,bao nhieu tich nho hon 0?
c) Co bao nhieu tich la boi cua 6?
d) Co bao nhieu tich la uoc cua 20?
Giup mk nha may bn dang can gap
cho hai tap hop A { 3;-5;7}; B { -2;4;-6;8} a) co bao nhieu a.b ( voi a thuoc A va b thuoc B ) dc taoo thanh ? b) lon hon 0, bao nhieu tich nho hon o?c) la boi cua 6 ?d) la uoc cua 20 ? GIUP MK VOI MK DAG CAN #GAP LAM
Đọc tiếp
cho hai tap hop
A = { 3;-5;7}; B = { -2;4;-6;8}
a) co bao nhieu a.b ( voi a thuoc A va b thuoc B ) dc taoo thanh ?
b) lon hon 0, bao nhieu tich nho hon o?
c) la boi cua 6 ?
d) la uoc cua 20 ?
GIUP MK VOI MK DAG CAN #GAP LAM
1.Mot khoi sat co khoi luong 390000g
a)Tinh the tich cua khoi sat
b)Mot khoi thuy tinh co the tich lon gap 2 lan the tich khoi sat.Hoi khoi nao co khoi luong lon hon va lon hon bao nhieu lan?
Biet khoi luong rieng cua sat la 7800kg/m3 va khoi luong rieng cua khoi thuy tinh la 2500kg/m3
Cho A la tap hop cac so tu nhien lon hon 50va nho hon 100.Viet tap hop A bg cach chi ra cac tinh chat dc trung cho cac phan tu cua no
cho B ={50;51;52...97;98;99 } .dung 1 trong cac ki hieu
thuoc;kg thuoc;bg; tap hop con de bieu dien moi quan he giua 2 tap hop A va B
b] Tap hop A co bao nhieu phan tu? tim tg tat ca cac so la phan tu cua tap hop A