\(0,01\times10\times0,3=0,1\times0,3=0,03\)

Keuka

TL

0,01 x 10 x 0,3 = 0,03 

đúng 100 % luôn 

#vohuudoan

ht

103 x 11 =143

349 x 11 =3.839

524x11=5.764

342x11=3.762

4556x11 = 50.116

~HT~

\(103\times11=1133\)

\(349\times11=3839\)

\(524\times11=5764\)

\(342\times11=3762\)

\(4556\times11=50116\)

Keuka

1 + 1 = 2

~HT~

2 nhá bạn

\(-1>-3\)

Keuka

a) Xét Δ AMC và Δ AMB có:

AC = AB (gt)

AM là cạnh chung

MC = MB (gt)

⇒Δ AMC = Δ AMB (c.c.c)

⇒∠CAM = ∠BAM (2 góc tương ứng)

⇒AM là phân giác BAC ( đpcm)

b) Xét t/g ANC và t/g ANB có:

AC = AB (gt)

AN là cạnh chung

NC = NB (gt)

⇒ Δ ANC = Δ ANB (c.c.c)

⇒ ∠CAN = ∠BAN (2 góc tương ứng)

⇒ AN là phân giác BAC

Như vậy, AM và AN đều là phân giác của BAC

Nên AM và AN trùng nhau hay A,M,N thẳng hàng (đpcm)

c)Vì Δ ANC = Δ ANB (câu b)

⇒ ∠ANC = ∠ANB (2 góc tương ứng)

Mà ∠ANC + ∠ANB = 180o ( kề bù)

Nên ∠ANC = ∠ANB = 90o

⇒AN vg BC hay MN vg BC

Mà CN = BN (gt)

Do đó, MN là đường trung trực của BC ( đpcm)

542 287 : 43 = 12.611,32558139535

56 278 + 48 782 = 105.060

46 826 - 5 631 = 263.677.206

53+23-45+93+39+49-33+98-34= 243

54x34x67x09x45x93x30x29x38x37x092x94= 4,901237024733219e+19

 1 + 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 = 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 001

1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001

nha bn liệt cụ số 0 r

= 1230124110140 nhoa

2 130 124 110 140 + 1 = 2 130 124 110 140

~HT~

1 giờ 40 phút ∼1,67 giờ

Quãng đường ô tô đó đi là:

1,67.40= 66,8 (km)

Thời gian ô tô đó chạy từ A đến B với vận tốc 60km/h là:

66,86066,860 ∼1,11 (giờ)

1,11 giờ = 1 giờ 6,6 phút

tự làm dễ

55 x 45 = 2 475

45 x 11 = 495

56 x 29 = 1 624

~HT~