English translation It's the 3A that makes or does

unit13a（A）1.Five years ago ,sally was ________ .2.She played _______ .3.She had _______ .4.Today,sally is ________ 5.She plays _____ 6.She has ________ 7.In five years ,sally will be ______ 8.She will pla...

English translation
Beginning with dear Jane

Dear Jane, today is Tuesday, November 11, I'm really busy. I have math class, I don't like math. Then at nine o'clock, there is a science class, it's very difficult, but it's very interesting. Next, at 10 o'clock, I have an art class, it's boring, but at 11 o'clock, there is a PE class, which is my favorite class, I eat lunch

3 minus 15 and 6 / 1 minus 4 and 6 / 5, simple calculation

48.3 minus 15 and 1 / 6 minus 4 and 5 / 6
=48.3 - (15 and 1 / 6 + 4 and 5 / 6)
=48.3-20
=28.3

If the two real roots of the equation x & # 178; + (m-1) x + M & # 178; - 2 = 0, one is less than - 1 and the other is greater than 1, then the value range of the real number m is?

Separately brought in
1 - (m-1) + M & # 178; - 2 = 0, M & # 178; - M = O, M = 1 or 0
1 + (m-1) + M & # 178; - 2 = O, M & # 178; + m -- 2 = O, M = 1 or - 2
So the scope excludes them
M ＜ - 2 and ＞ 0

There's a string of numbers one, half, two-thirds, half, one-third, two-thirds, three-thirds, two-thirds, one-third, one-quarter, two-quarters, three quarters, four quarters, three quarters, two-quarters, one-quarter
Q: what's the 400th score?

If the denominator is one, there is one number
There are three numbers whose denominator is two
There are five numbers whose denominator is three
There are seven numbers whose denominator is four
And so on, if the denominator is n, there are 2N-1 numbers
With the summation formula of arithmetic sequence, (1 + 2n-1) n / 2 = 400, n = 20
So the 400th fraction is the last number in the denominator 20, which is one twentieth

80 cuboid logs are piled into a cuboid with a length of 4m, a width of 8m and a height of 5m. What is the average volume of each cuboid log?
How many cubic meters is it?

Volume of stacked cuboid: 4 * 8 * 5 = 160 (M3)
So the volume of each cuboid wood is: 160 △ 80 = 2 (M3)

2009 by 1 / 2 by 2 / 3 by 3 / 4 Multiplying 2008 out of 2009 equals

This can be seen by looking at the law
Because the following fraction is the denominator of the former fraction and the numerator of the latter fraction
So the final score is 1 in 2009
The final result is 1

Given that {an} is an arithmetic sequence, A5 = 10, a1 + A2 + a3 = 3, then A1 and D are ()
A. a1=-2，d=3B. a1=2，d=-3C. a1=-3，d=2D. a1=3，d=-2

In the arithmetic sequence {an}, from a1 + A2 + a3 = 3, we can get 3a2 = 3, A2 = 1. Also, A5 = 10, ｜ d = A5 − a25 − 2 = 10 − 13 = 3, then A1 = a2-d = 1-3 = - 2

Minus two and two fifths plus minus eight and two fifths equals zero

-2*(2/5)+(-8*(2/5))=-12/5+(-42/5)=-54/5=-10*(4/5)
Negative 10 and four fifths

If the solution of MX + 6 = 14 is x = 2, find the value of M2 - 1

As a result of the equation of the: 2m + 6 = 14 & nbsp & nbsp; and the equation of the equation of: 2m + 6 = 14 & nbsp & nbsp & nbsp & nbsp & nbsp; as the equation of the equation of: 2m + 6 = 14-14 & nbsp & nbsp & nbsp & nbsp & nbsp; as the equation of the equation of: 2m + 6 = 2m + 6-6 = 14-14 & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp; & nbsp & nbsp & nbsp; & nbsp & nbsp; & & nbsp & nbsp & nbsp; & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp; & & nbsp & nbsp & nbsp & nbsp; & & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & & nbsp & nbsp & nbsp & nbsp & & nbsp & nbsp & nbsp & nbsp & nbsp & & & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp & nbsp nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; &Nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; m = 4, so M2-1 = 42-1 = 16-1 = 15

English translation It's the 3A that makes or does