Four seasons reading answers of comprehensive rain detection in the second volume of seventh grade Chinese exercise book

Four seasons reading answers of comprehensive rain detection in the second volume of seventh grade Chinese exercise book

Title?

Three and one-third divided by one-half

Three and one-third divided by one-half
It's three and a third times two
It's six and two-thirds
Give me a share!

Singular to plural conversion,
1.They go to the park by bus.
2.A kangaroo can jump 30 kilometer an hour.
3.Here are some good newspaper.
4.They can't walk.
5.She doesn't have an orange hat.
6.They are army officers.
7.Baby koala bears aren't very big but adult polar bears are very strong.

1.He goes to the park by bus.2.kangaroos can jump 30 kilometer an hour.3.Here is a good newspaper.4.He can't walk.5.They don't have any orange hats.6.He is an army officer.7.A baby koala bear isn't ve...

If there are 20 people in each car, 5 people will not be able to sit on it. If there are 25 people in each car, they will not be able to sit on it

The title is incomplete

In natural numbers, if a number can be expressed as the square difference of two different natural numbers, then the natural number is a "good number". For example
A number can be expressed as the square difference of two different natural numbers, then the natural number is a "good number". For example, 16 in 16 = 5 & # 178; - 3 & # 178; is a "good number". In natural numbers, what is the remainder of the 2008 "good number" divided by 4 from 1?
It's better to use formula instead of quadratic equation

1²-0²,2²-0²,2²-1²,3²-0²,3²-1²,3²-2²,.
1+2+3+...+n≤2008
n(n+1)≤4016
When n = 62,
1+2+3+...+62=1953
2008-1953=55
The 2008 "good number" is 63-178; - 54-178;
(63²-54²)/4=9*117/4=(9*116+9)/4=9*29+9/4
Therefore, the remainder of the 2008 "good number" divided by 4 is 1

What is the 53rd power of 47 plus the 47th power of 33

47th power of 47 + 47th power of 33 = 41800980665437019239981270985244807632936381197298457132782667947323671705972699478226927 + 234506656247769050177488214602515002383661100674356903403652208737777 = 41800980654370

Yucai primary school five teachers lead 122 students spring outing, children are very interested in the park cruise
How many boats do these students need to hire to play? How much does it cost to play for only one hour?
① Each boat is 15 yuan per hour, 5 passengers are allowed. ② there is a boatman on each boat, which is very safe

(122+5)/(5-1)=127/4=31…… three
31 + 1 = 32
32 * 15 = 480 yuan
So you need to hire 32 boats, and it costs 480 yuan to play for only one hour

How to expand ln (x + 1) with Taylor formula?
I first thought I could use the lobita rule twice, but later I found that I couldn't. After I used the lobita rule once, I found that it was no longer true
0 / 0 is no longer available
The title prompt theory ln (x + 1) Taylor expansion

Look at the picture~

If LG2, LG (2x-1), LG (2x + 3) are in arithmetic sequence, then x =?
If LG2, LG (2 ^ x-1), LG (2 ^ x + 3) are in arithmetic sequence, then x =?
In this problem, it is the x power of 2, not 2x

Because LG2, LG (2 ^ x-1), LG (2 ^ x + 3) are arithmetic sequences
So LG (2 ^ x + 3) - LG (2 ^ x-1) = LG (2 ^ x-1) - LG2
So (2 ^ x + 3) / (2 ^ x-1) = (2 ^ x-1) / 2
So (2 ^ x-1) ^ 2 = (2 ^ x + 3) * 2
( 2^x)^2+1-2*2^x=2*2^x+6
( 2^x)^2-4*2^x-5=0
(2^x-5)(2^x+1)=0
Because 2 ^ x + 1 > = 0
SO 2 ^ x = 5
So x = LG2 ^ 5
I think so
I hope I can help you

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