14537-4+(5-14537)
Những câu hỏi liên quan
Tính hợp lí:
5) 13579 - ( 14 - 53) + 14537
6) 14537 - 4 + ( 5 - 14537)
5) 13579 - (14-53) + 14537
= 13579 - 14 + 53 + 14537
=28155
6) 14537 - 4 + (5 - 14537 )
= 14537 - 4 + 5 - 14537
=1
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4 5. 4. 6.
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15 6. 5. 7
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15 6. 5...
Đọc tiếp
4 5. 4. 6.
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15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
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15 6. 5. 7
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4 5. 4. 6.
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15 6. 5. 7
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4 5. 4. 6.
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4 5. 4. 6.
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Khoanh vào phân số lớn hơn 1_3
Viết số thích hợp vào chỗ chấm:
4×6=… 4×4=…5×4=…5×8=…
2×4=…4×7=…5×6=…5×2=…
4×9=…4×8=…5×7=…5×3=…
3×4=…4×10=…5×10=…5×9=…
4 × 6 = 24 4 × 4 = 16 5 × 4 = 20 5 × 8 = 40 |
2 × 4 = 8 4 × 7 = 28 5 × 6 = 30 5 × 2 = 10 |
4 × 9 = 36 4 × 8 = 32 5 × 7 = 35 5 × 3 = 15 |
3 × 4 = 12 4 × 10 = 40 5 × 10 = 50 5 × 9 = 45 |
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4 x 6 = 24 4 x 4 = 16 5 x 4 = 20 5 x 8 = 40
2 x 4 = 8 4 x 7 = 28 5 x 6 = 30 5 x 2 = 10
4 x 9 = 36 4 x 8 = 32 5 x 7 = 35 5 x 3 = 15
3 x 4 = 12 4 x 10 = 40 5 x 10 = 50 5 x 9 = 45
So sánh: 4^9+4^8+4^7+..+4+1/4^10+4^9+4^8+...+4+1 và 5^9+5^8+5^7+...+5+1/5^10+5^9+5^8+...+5+1
Các bạn giúp mk nhé mk đang cần gấp ^_^
>, < , = ?
| 5 – 2 … 4 | 5 – 4 … 2 | 4 + 1 … 5 |
| 5 – 2 …. 3 | 5 – 3 … 1 | 5 – 1 … 5 |
| 5 – 2 … 2 | 5 – 1 …. 4 | 5 – 4 … 0 |
Lời giải chi tiết:
| 5 – 2 < 4 | 5 – 4 < 2 | 4 + 1 = 5 |
| 5 – 2 = 3 | 5 – 3 > 1 | 5 – 1 < 5 |
| 5 – 2 > 2 | 5 – 1 = 4 | 5 – 4 > 0 |
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5-2<4 5-4<2 4+1=5
5-2=3 5-3>1 5-1<5
5-2>2 5-1=4 5-4>0
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>, <, = ?
| 5 + 5 … 10 | 10 … 4 + 6 | 5 … 10 – 4 |
| 5 + 4 … 10 | 6 + 4 … 4 + 5 | 6 … 9 – 4 |
Lời giải chi tiết:
| 5 + 5 = 10 | 10 = 4 + 6 | 5 < 10 – 4 |
| 5 + 4 < 10 | 6 + 4 > 4 + 5 | 6 > 9 – 4 |
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| 5 + 5=10 | 10= 4 + 6 | 5 <10 – 4 |
| 5 + 4 >10 | 6 + 4 > 4 + 5 | 6 > 9 – 4 |
5+4> 10 nhó mik viết nhầm thông cảm nhoa
Xem thêm câu trả lời
D=5/4 + 5/4^2 +5/4^3 + 5/4^4 +.....+5/4^99 .Chứng tỏ D<5/3
D=5/4+5/4^2+5/4^3+....+5/4^99
4D=4(5/4+5/4^2+5/4^3+....+5/4^99)
4D=5+5/4+5/4^2+5/4^3+....+5/4^98
Lấy 4D-D=(5+5/4+5/4^2+5/4^3+....+5/4^98)-(5/4+5/4^2+5/4^3+....+5/4^99)
=>3D=5-5/4^99
D=5/3-5/3x4^99<5/3
=>d<5/3(ĐPCM)
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`Answer:`
\(D=\frac{5}{4}+\frac{5}{4^2}+\frac{5}{4^3}+\frac{5}{4^4}+...+\frac{5}{4^{99}}\)
\(\Rightarrow4D=5+\frac{5}{4}+\frac{5}{4^2}+\frac{5}{4^3}+...+\frac{5}{4^{98}}\)
\(\Rightarrow4D-D=\left(5+\frac{5}{4}+\frac{5}{4^2}+\frac{5}{4^3}+...+\frac{5}{4^{98}}\right)-\left(5+\frac{5}{4^2}+\frac{5}{4^3}+\frac{5}{4^4}+...+\frac{5}{4^{99}}\right)\)
\(\Rightarrow3D=5-\frac{5}{4^{99}}\)
\(\Rightarrow D=\left(5-\frac{5}{4^{99}}\right):3\)
\(\Rightarrow D=\frac{5}{3}-\frac{5}{4^{99}.3}< \frac{5}{3}\)
Vậy `D<5/3`
Điền dấu < , > , =
a) 4/5 + 4/5 + 4/5 + 4/5 ..........4/5 x 5
b) 4/5 x 4 .........4/5 x 5
Mình sẽ tích cho ai có câu trả lời nhanh và đầy đủ .
a) 4/5 + 4/5 + 4/5 + 4/5 < 4/5
Vì 4/5 + 4/5 + 4/5 + 4/5 = 4/5 x 4
b) 4/5 x 4 < 4/5 x 5
vì 4/5 x 4 = 16/5 và 4/5 x 5 = 4
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27 tháng 3 2022 lúc 8:28
Tìm x biết \(\dfrac{4^5+4^5+4^5+4^5}{3^5+3^5+3^4}.\dfrac{6^5+6^5+6^5+6^5+6^5+6^5}{2^5+2^5}\)=2\(2^x\)
Sửa đề: 3^5+3^5+3^5; 2^x
=>\(2^x=\dfrac{4^5\cdot4}{3^5\cdot3}\cdot\dfrac{6^5\cdot6}{2^5\cdot2}\)
=>\(2^x=\left(\dfrac{4}{3}\right)^6\cdot\left(\dfrac{6}{2}\right)^6=4^6=2^{12}\)
=>x=12
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