Calculate the formula 1. The staff of a hotel put a square dining table with side length of 1.2 in a 25 meter long and 12 meter wide dining room. It is required to leave at least 1.5 meter space between each dining table and at least 0.8 meter space between the dining table and the wall. How many dining tables can this restaurant put in order at most? According to the meaning of the title, 25 meters long can put up to 9 tables, 12 meters wide can put up to 4 tables, so this restaurant can put up to 36 tables

Calculate the formula 1. The staff of a hotel put a square dining table with side length of 1.2 in a 25 meter long and 12 meter wide dining room. It is required to leave at least 1.5 meter space between each dining table and at least 0.8 meter space between the dining table and the wall. How many dining tables can this restaurant put in order at most? According to the meaning of the title, 25 meters long can put up to 9 tables, 12 meters wide can put up to 4 tables, so this restaurant can put up to 36 tables

(25-2 × 0.8) / (1.2 + 1.5) = 8.7 (about 9 sheets)
(12-2 × 0.8) / (1.2 + 1.5) = 3.85 (about 4 sheets)
9 × 4 = 36 sheets

The relationship between frequency and frequency?
To be more specific, there are written descriptions.

Frequency △ total = frequency

One half to one third = one fourth to one fifth of x a + 60% a = 24 is a simple calculation
It's a simple calculation
Help me

1/2 ：1/3=1/4 ：x
x=1/3×1/4÷1/2
x=1/6
1/5a+60%a=24
（0.2+0.6）a=24
0.8a=24
a=24÷0.8
a=30

When Party A works alone for 18 days, and Party A and Party B cooperate for 10 days, Party B works alone for several days, and Party A and Party B cooperate for two days,
After finishing the work, how many days has Party B worked in this work?

（1-1/18×2）÷（1/10-1/18）
=8/9÷2/45
=20 days

How can 3,7, - 5, - 11 be equal to 24

（7-3)×[(-5)-(-11)]=24

(3a-4b)(7a-8b)+(11a-12b)(8b-7a)

(3a-4b)(7a-8b)+(11a-12b)(8b-7a)
=(3a-4b)(7a-8b)-(11a-12b)(7a-8b)
=(3a-4b-11a+12b)(7a-8b)
=(8b-8a)(7a-8b)
=8(b-a)(7a-8b)

(48 degrees 39 points + 67 degrees 41 points) divided by 6

(115 degrees + 80 points) divided by 6
=116 degrees 20 minutes divided by 6
About 19.3 degrees + 3.3 minutes
About 19 degrees + 0.3 times 60 minutes + 3 minutes + 0.3 times 60 seconds
It's about 19 degrees, 21 minutes, 18 seconds

Experience whether the following numbers are solutions of the equation 5x-3 = 4x + 2. (1) x = 1, (2) x = 5

（1）x=1
5x-3=5x1-3=2
4x+2=4x1+2=6
No
（2）x=5
5x-3=5x5-3=22
4x+2=4x5+2=22
So it is

Simple calculation of 8 / 15 - (8 / 15-7 / 18)

8/15-(8/15-7/18
=8/15-8/15+7/18
=0+7/18
=7/18

If △ ABC is known, a = 5, B = 3, C = 120 °, then the value of sina is ()
A. 5314B. −5314C. 3314D. −3314

According to the cosine theorem, C2 = A2 + b2-2abcosc = 25 + 9-30 × (- 12) = 49, C = 7, and Sina = asincc = 5 × 327 = 5314