các bạn làm nhanh giúp mình nha

Bài 1: Tính giá trị của biểu sau : 1) -5/2 : (3/4-1/2) 2) 298/719 : (1/4 + 1/12 - 1/3) - 2011/2012 3)27 nhân 8 + 27 nhân 103 - 120 nhân 27 phần 15 nhân 33 + 33 nhân 12

X=4cos(10t + #\6) ai giup e vs ạ

Tìm nghiệm: d) x.(1-3x)-(5x-3x^2+1) f)2(x-1)-3x(x-1) g)3(x-3)+2(3x-4)

tìm hai số tự nhiên liên tiếp x và y sao cho : x <19,54< y

các bạn làm nhanh giúp mình nha

27 x ( $\frac{171717}{272727}$ + $\frac{373737}{363636}$ )

Tìm nghiệm của đa thức sau: a) Q(x)= 3x+4 b) H(x) = 5-2x c) G(x) = 2+x² Mong các bạn giải giúp mình với ạ

Ở đậu Hà Lan: thân cao là trội hoàn toàn so với thân thấp. a) Xác định kiểu gen, kiểu hình của cặp P để F1 thu được 242 cây thân cao: 240 cây thân thấp b) Biện luận, xác định cặp P để thu được đời F1 đồng tính.

Exercise 3: Complete the dialogue using the correct form of the words in bracketsSue: (1) …………………………………… when you saw them? (what | Tim and Matt | do) Julie: Tim was swimming in the pool, but I didn’t see Matt first. Sue: (2) …………………………………………… in the pool, too? (you | swim) Julie: No, I wasn’t. I was just looking. But then I saw Matt, too. Sue: (3) …………………………………… ? (what | he | do) Julie: He was diving in the pool. Sue: Diving, you say. (4) ……………………. to dive? (he | not | just | try) He can’t dive. Julie: You’re right. He was just trying to do it. And all his friends were watching it. Sue: (5) …………………………………….. ? (they | laugh) Julie: Of course, they were. Matt was pretty funny. He splashed the water all over the place. Sue: (6) …………………… faces when he came up to the surface of the pool? (Matt | make) Julie: Yes, he was. He was grinning and making faces at me. Sue: At you? Vow! And what about Tim? (7) ……………………… Matt, too? (he | watch) Julie: Not really. He was looking at me instead. Sue: Oh, no! You’re kidding. (8) ………………………….. your new swimsuit? (you | wear) Julie: Yes, I was. Why? Sue: Now I know why Tim and Matt were watching you, Julie.