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8 tháng 2 2022

? bạn viết j vậy

8 tháng 2 2022
So do u know 10^303?

b: 99^20=(99^2)^10=9801^10

=>99^20<9999^10

d: 10^10=100^5=4*50^5<48*50^5

e: 1990^10+1990^9

=1990^9(1990+1)

=1990^9*1991

1991^10=1991^9*1991

=>1991^10>1990^9*1991

=>1991^10>1990^10+1990^9

26 tháng 8 2021

a)
\(7^{30}=\left(7^3\right)^{10}=343^{10}\)
\(3^{40}=\left(3^4\right)^{10}=81^{10}\)
mà \(343^{10}>81^{10}\)
=>\(7^{30}>3^{40}\)

26 tháng 8 2021

b) 202^303 và 303^202
\(202^{303}=\left(202^3\right)^{100}=8242408^{100}\)
\(302^{202}=\left(302^2\right)^{100}=91204^{100}\)
\(8242408^{100}>91204^{100} \)
202^303 > 303^202

26 tháng 2 2017

Đáp án là :

a) <

b, <

c, chưa biết

d, <

đúng thì ủng hộ tớ nha

24 tháng 12 2021

1 more happy -> happier

2 go usually -> usually go

3 helps -> help

4 have -> having

5 between -> on

Read the passage below and choose the answer which best fits each gap.     Write your answer (A, B, C, or D) in the space given on the right. (10 pts)Everyone wants to reduce pollution. But the pollution (1) is as complicated as it is serious. It is complicated (2) much pollution is caused by things that benefit people. For example, (3) from automobiles causes a large percentage of all air pollution. But the automobiles (4) transportation for millions of people. Factories (5) much of...
Đọc tiếp

Read the passage below and choose the answer which best fits each gap.

    Write your answer (A, B, C, or D) in the space given on the right. (10 pts)

Everyone wants to reduce pollution. But the pollution (1) is as complicated as it is serious. It is complicated (2) much pollution is caused by things that benefit people. For example, (3) from automobiles causes a large percentage of all air pollution. But the automobiles (4) transportation for millions of people. Factories (5) much of material that pollutes air and water, but factories give employment to a large number of people.

Thus, to end (6) greatly reduce pollution immediately, people would have to stop using many things that (7) them. Most of the people do not want to do that, of course. But pollution can be (8) reduced in several ways. Scientists and engineers can work to find ways to lessen the amount of pollution that such things as automobiles and factories cause. Governments can pass and enforce laws that (9) businesses and (10) to stop, or cut down on certain polluting activities.

1.        A. work                           B. problem                         C. accident                        D. event                              

2.        A. because                     B. so                                  C. that                                D. while                                       

3.        A. exhaust                      B. fire                                 C. gas                                D. liquid                                       

4.        A. carries                        B. takes                             C. gives                              D. provides                                       

5.        A. offer                            B. bring                              C. discharge                      D. cause                                       

6.        A. to                                B. or                                   C. so                                  D. that

7.        A. benefit                        B. harm                              C. motivate                        D. encourage                                       

8.        A. little                            B. gradually                       C. extremely                      D. a bit                                   

9.        A. require                       B. forbid                             C. prevent                          D. request                                       

A. commercials           B. surroundings          C. individuals               D. traffic 

4
17 tháng 8 2021

ôi bn ơi

11 tháng 4 2020

a, Ta có:

2300 = (23)100 = 8100

3200 = (32)100 = 9100

Vì 8100 < 9100 nên 2300 < 3200

b, Ta có:

202303 = (2023)101 = 8242408101

303202 = (3032)101 = 91809101

Vì 8242408101 > 91809101 nên 202303 > 303202

c, Ta có:

199010 + 19909 = 19909(1990 + 1) = 19909.1991

Vì 19909.1991 < 199110 nên 199010 + 19909 < 199110