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x x (125 -30 + 5)= 375000
x x 100 =375000
x =375000 : 100
x =3750
Free time - Answer #4:
`x + x xx 18 + x xx 20 + ...+ x xx 48 = 23805`
`=> x + (x xx 18 + x xx 20 + ...+ x xx 48) = 23805`
`=> x + x xx (18 + 20 + ...+ 48) = 23805`
`=> x + x xx {(18+48) xx [(48 - 18) : 2 + 1] : 2} = 23805`
`=> x xx 1+ x xx (66 xx 16 : 2) = 23805`
`=> x xx (528 + 1) = 23805`
`=> x xx 529 = 23805`
`=> x = 45`
Vậy `x = 45`
\(\dfrac{x}{12}=\dfrac{3}{4}\times\dfrac{3}{3}=\dfrac{9}{12}\)
\(x\) x 2 + \(\dfrac{x}{2}\)= 10
=> \(x\) x 2 + \(x\) x \(\dfrac{1}{2}\)= 10
=> \(x\)x ( 2 + \(\dfrac{1}{2}\)) = 10
=> \(x\) x \(\dfrac{5}{2}\) = 10
=> \(x\)= 10 : \(\dfrac{5}{2}\)
=> \(x\) = 4
Độ dài đường chéo AC:
\(\left(25-5\right):2=10\left(m\right)\)
Độ dài đường chéo DB:
\(25-10=15\left(m\right)\)
Diện tích hình thoi ABCD:
\(\dfrac{10\times15}{2}=75\left(m^2\right)\)
\(\rightarrow C\)
Mai mình nộp về trường rồi nên Mn giải nhanh giúp mình nhé! Trễ lắm rồi ạ!
mình viết theo gia đình mình nha!!!!
This is my family. There are four people in my family: mother, father, sister and me, My father name is ( tên ). My father is 45 years old. My father is a ( nghề nghiệp). My mother name is ( tên ). My mother is 40 years old. She is a teacher. My sister name is Linh. My sister is 16 years old. She is a student. My name is ( tên). I am is 12 years old. I am is a student.
tick nha!!!!!!!!!!!!!!!!!
Đây:
I love my family a lot because it's my home. In my family, there are four people: my father;my mother ;my younger brother and me. My father is a police.He is 40 years old and He works at the police station.He's tall and fat. He's very strict. My mother is 35 years old. She is a good teacher at Binh Son high school. She'is caring and friendly. She cooks very well.My younger brother is a pupil of Chau O primary school. He is very chubby. And me, I am a student in grade 6, class 6c at Nguyen Tu Tan secondary school. My hobby is reading English books because I can improve my vocabularies and structures ( cấu trúc). I am sociable and humorous. I love my family very much.
\(125\times x-25\times x=5208\)
\(x\times\left(125-25\right)=5208\)
\(x\times100=5208\)
\(x=5208:100\)
\(x=52,08\)
X*125- X*25= 5208
X*(125-25) = 5208
X*100 = 5208
X= 5208:100
X= 52,08.
Đây nek, đúng 100% luôn nên k cho mik nha!