30x4+60x3=????
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\frac{4^{15}}{7^{30}}=\frac{\left(2^2\right)^{15}}{7^{30}}=\frac{2^{30}}{7^{30}}=\left(\frac{2}{7}\right)^{30}\)
\(\frac{8^{10}.3^{30}}{7^{30}.4^{15}}=\frac{\left(2^3\right)^{10}.3^{30}}{7^{30}.\left(2^2\right)^{15}}=\frac{2^{30}.3^{30}}{7^{30}.2^{30}}=\frac{3^{30}}{7^{30}}=\left(\frac{3}{7}\right)^{30}\)
Vì \(\frac{2}{7}<\frac{3}{7}\Rightarrow\left(\frac{2}{7}\right)^{30}<\left(\frac{3}{7}\right)^{30}\)
Vậy \(\frac{4^{15}}{7^{30}}<\frac{8^{10}.3^{30}}{7^{30}.4^{15}}\).
Ta có: 12 x ( x y 2 ) 3 - ( - 30 x 4 ) ( y 4 3 ) 2 = 12 x ( x 3 y 6 ) + 30 x 4 y 6 = 42 x 4 y 6
Chọn đáp án C
X:4+30=70
X=(70-30)x4
X=40x4
X=160
Làm thế này mới đúng
Bn làm như thế thì phải nhân trước rồi mới cộng => bn làm sai
1 số giảm đi 4 lần mà cộng cho 30 thì bằng 70
Ta có: X : 4 + 30 = 70
\(\Rightarrow\)X : 4 = 70 - 30
X : 4 = 40
X = 40 x 4
X = 160
Hello ! My name is Hien. I'd to tell you about my school.My school's name Tran Hung Dao secondary school. My school is on the street. It is very beautiful and very big. My school has a front yard and a backyard. The front yard has many flowers, trees, head flag, and a playground. the backyard has a playground. My school has 40 teachers, 1000 students and 30 rooms.I hope I'll be a good student of Tran Hung Dao secondary school. I love my school, my teachers and my friends very much. Because they are very friendly and always help whenever I need.
= 300
nha từ sáng tới giờ mk chưa đc lần nào
30.4+60.3
=120+180
=300