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Bài làm
Y x 18 : 4 = 72 : 4
Y x 18 : 4 = 18
Y x 4,5 = 18
Y = 18 : 4,5
Y = 4
Vậy Y = 4
# Chúc bạn học tốt #
y x 18 : 4 = 72 : 4
=> y x 18 = 72 : 4 . 4
=> y x 18 = 72
=> y = 72 : 18
=> y = 6
Vậy ...
bạn ơi đề này bạn ghi linh tinh thì ai làm đc hả bạn, đừng đăng bài viết linh tinh nữa đi đc ko :|
Gọi đáy lớn ad là a, đáy nhỏ bc là b, đường cao là h
Ta có: S tam giác BCD là: (b x h) : 2= 254 (cm2) => b x h = 254 x 2=508(cm) (1)
Có: S hình thang ABCD= ((a+b)x h):2=> (a x h+b x h): 2
mà a=3xb
=>(3 x b x h+b x h):2 (2)
Từ (1) và (2) ta có: (3 x 508 + 508):2= S hình thang abcd
=> 2032 : 2 =S hình thang ABCD
=>S hình thang ABCD= 1016(cm2)
1. About my family:
In my family, there are five people, my dad, my mom, my two brothers and me. My parents are old. My dad works as a butcher at Tyson Food company and my mom works as an outbound DC picker at Covetrus. My oldest brother works in a factory making pet food and medicine. My second brother and I are currently looking for jobs.
2. About my favorite book, food, and favorite drink.
My favorite book to read is the Bible. The Bible is a collection of 66 small books of history, genealogy, reports, prophecies, promises of God, poems, and songs. I to eat while reading my favorite book. Out of all the food that I had, my favorite food is Spicy Beef Noodle from Hue. I love the spicy taste of the broth and the unique smell of the dish. The dish has exo items, such as blood cube and shredded banana flowers. The shrimp sauce is smelly but it’s very tasty and flavorful at the same time. Eating is usually followed by drinking. The drink I the most is Taro boba tea with coffee toppings. It’s fairly cheap and tastes very good. It has a sweet and rich taste from Taro blending with a hint of coffee. These are my favorite book, food, and drink.
3. Something in my home and school.
My home and school share many common items. Both places have desks and chairs, printers, papers, notebooks, books, office supplies, backpacks, snacks, and drink.
57/12 > 114/x > 57/13
<=> 114/24 > 114/x > 114/26
x = 25
27/18 = 3/2
vì
x/3=3/2
=> x.2/6=9/6
=> x.2=9
x= 9 : 2
x=4,5
vì 3/2 = 3/y
=> y=2
Vậy y=2. x=4,5