There are 84 pages in a science and technology book. Lili read 1 / 4 of it on the first day and 8 / 7 of it on the second day. How many pages did Lili read on the second day?

The number of pages the next day was 84 * 1 / 4 * 8 / 7 = 28

Lily read a 160 page book. She read one eighth of the whole book on the first day and three sixteenth of the whole book on the second day. How many pages are left?

160-160*(1/8+3/16)
=110 pages

Xiao Jun read a 120 page story book. On the first day, he read 13 parts of the book, and on the second day, he read it______ The page looks good

120 × 13 = 40 (page) 40 + 1 = 41 (page), so the answer is: 41

1.5 times of a number is 17 less than the sum of 27 and 23. What's the number? (solve the equation)

Let this number be X
1.5x=27+23-17
1.5x=33
x=22
A: the number is 22

Find the ellipse standard equation with the focus of ellipse x ^ 2 / 12 + y ^ 2 / 16 = 1 as the vertex and the same eccentricity as the ellipse

The purpose of this paper is to find out the ellipse of: X \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\(?) 178; = 1

The first five terms of the sequence are the following numbers. Write a general term formula of each sequence: (1) 1,1 / 3,1 / 5,1 / 7,1 / 9 (2) - 1 / 2 × 1,1 / 2 × 2, - 1 / 2 × 3,1 / 2 × 4, - 1 / 2 × 5 (3) 1, √ 2 / 2,1 / 2, √ 2 / 4,1 / 4

（1）an=1/(2n-1) .
（2）an=(-1)^n*1/(2n) .
(3) Rewrite each item: 1 / 1, √ 2 / 2, √ 4 / 4, √ 8 / 8, √ 16 / 16,
So the general term is an = √ [2 ^ (n-1)] / 2 ^ (n-1)

5:47, 9:23, 3:51, 11:49, 7:22 these are in English

Thickness to six or five force seven
nine twenty-three
Nine to four or three fifth one
Eleven to twist or eleven Fort nine
seven twenty-two
Are you ok?

Two fifths of 40 is equivalent to what parts of 60?

40 × 2 / 5 △ 60
=16÷60
=4 out of 15
Two fifths of 40 is equivalent to four fifths of 60

A: Xiao Li plans to finish a 200 page book in 20 days, so he has read it in 5 days
A：
A 200 page book, Xiao Li plans to finish in 20 days, then he read a few of the book in 5 days

One in four

(82+x--19)/3=24

(82+x--19)/3=24
(82+x--19)=72
63+x=72
x=72-63
x=9

There are 84 pages in a science and technology book. Lili read 1 / 4 of it on the first day and 8 / 7 of it on the second day. How many pages did Lili read on the second day?