Phương Thảo
Giới thiệu về bản thân
1.New devices have been inveted to help people live a longer life by scientist.
2.If I had enough time,I could go on holiday this summer.
3.In spite of having a broken leg, he tried to safe his wife.
4.If I known the answer, I could tell you.
5.If they wouldn't review them all hard, they would do the test well.
6.The villagers in the raged flood were evacuated to the safe place by the rescue workers last night.
7.Aids will be provided for the homeless people by the students tomorrow.
8.If the people wouldn't protect the enviroment now, the environment wouldn't be nice.
9.If they had a maps, they wouldn't get lost.
10.Many houses in this village were destroyed by the storm last night.
11.Was food given to homeless people last year?
12.Despite the bad weather,_______________
13.If the people wouldn't protect the enviroment now, the environment wouldn't be nicer.
14.If they had a maps, they wouldn't get lost.
15.Many houses in this village were destroyed by the storm last night. 16. thay dấu chấm ở giữa câu bằng 'because' 17.thay dấu chấm ở giữa câu bằng 'so' 18.If it didn't cost too much money, we would hold the festival. 19.thay dấu chấm giữa câu bằng 'while' 20. Although the girl worked hard, her stepmother wasn't happy.1. Excuse me, how can I get to the post office.
2. How many sweats do you eat every day?
3. How far is it from here to your house?
4.How much water do you drink every day?
5.I often drink two cartons of milk every day.
gọi quãng đường Lào Cai-Sa Pa là x(x>0)(km)
Thời gian người đó đi từ Lào Cai lên Sa Pa là : x/30 (h)
Thời gian người đó đi từ Sa Pa về Lào Cai là : x/40 (h)
Đổi : 15' =2/5h
Theo đề , thời gian lúc đi lâu hơn lúc về 15' nên ta có phương trình:
x/30 - x/40 =2/5 <=> 4x - 3x=48
<=> x=48
Vậy quãng đường Lào Cai- Sa Pa là 48km
<=>(x-4/5)(x+11/5)=0
<=> x-4/5 =0 hoặc x+11/5=0
<=> x=4/5 hoặc x=-11/5
1/5 +1/5 +3/5+4/5 +y=155
<=> 9/5+y= 775/5 <=> y= 775/5-9/5
<=> y= 766/5
Tóm tắt : V nước = 1,5l=> m1=1,5kg ; m2=600g=0,6kg ; t1=20 độ C ; t2=100 độ C; tcb=17 độ C ; c1=4186 J/kg.K, c2=?
Giải:
Theo phương trình cân bằng nhiệt, ta có :
Q tỏa= Q thu <=>0,6 . c2 . (100-17)= 1,5 . 4186. (20-17)
<=> 49,8. c2=188837 <=> c2=378,3 (J/kg.K)
=> Kim loại là đồng
Bạn tự vẽ hình nhé^^
a) xét tam giác HDC và tam giác HEB có:
góc E= góc D(=90 độ)
góc EHB = góc DHC(2 góc đối đỉnh)
=> tam giác HDC đồng dạng tam giác HEB(g-g)
=>HD/HE = HC/HB=> HD.HB=HE.HC(đpcm)
b)Xét tam giác ADB vuông tại D và tam giác AEC Vuông tại E có:
góc A: góc chung
=> tam giác ADB đồng dạng tam giác AEC (g-g)
=>AD/AE=AB/AC
Xét tam giác AED và tam giác ACB có:
góc A: góc chung
AD/AE=AB/AC (cmt)
=> tam giác AED đồng dạng tam giác ACB(c-g-c)
=>góc ADE=góc ABC (đpcm)
try:
n=int(input('Nhap n:'))
if n<0:
print('Vui long nhap n>0:')
else:
for i in range(1,n+1):
if n%i==0:
print(i,end=' ')
except:
print('Dinh dang dau vao khong hop le!)