log89a/log23=

log89a/log23=

Original formula = (lg9 / LG8) / (Lg3 / LG2)
=lg9lg2/(lg8lg3)
=2lg3lg2/(3lg2lg3)
=2/3

If (x-3) divided by (X-2) ^ 2 = a divided by (X-2) + B divided by (X-2) ^ 2, find the value of a and B

(x-3) divided by (X-2) ^ 2
=[(x-2)-1]/(x-2)^2
=(x-2)/(x-2)^2-1/(x-2)^2
=1/(x-2)-1/(x-2)^2
=A divided by (X-2) + B divided by (X-2) ^ 2
So a = 1, B = - 1

If two of the five numbers 1, 2, 3, 4, 5 are taken as the base and true number of a logarithm respectively, the number of different values will be

Let's look at the base number first. All but 1 can be used as the base number, so there are four ways to take the base number, and the rest can be used as the true number, so there are 5-1 = four ways to take the base number, and then subtract the repeated number. When the true number is 1, the logarithm value is always 0, so only one can be counted at this time. There are three kinds of extra numbers, and the rest are not repeated, so there are a total of 4 * 4-3 = 13

Square of A-B = 50, square of a + B = 8, find the value of a-b

By decomposing the factor with the square difference formula, we get a + B = 2 radical 2, A-B = 12.5 radical 2

What are the categories of uncountable nouns?

1. Uncountable nouns are not plural and cannot be changed;
2. Yes;
3. Uncountable nouns can be connected with some, any, little / a little or much, and can not be connected with numerals. If they are connected, the quantifier and of should be added after the numerals;
4. Uncountable: milk, rice, fish (when fish explains the species of adult fish, it is countable noun, plural is itself), iunk food, exercise (when exercises, morning exercises are countable). The rest are countable, sleep is sleep
Other materials: 1. Common uncountable nouns
1. The most common uncountable nouns are: advice, baggage, change, furniture, hair, home, information, knowledge, luggage, money, news, progress, traffic
2. Other uncountable nouns include: absence, age, anger, comfort, energy, equipment, experience, failure, fear, food, fun, health, ice, industry, kindness, labor, luck, margin, music, nature, paper, peace, pleasure, power, price, rain, research, respect, safety, salt, sand, silent, sleep, strength, snow, technology, time, trade, transport, travel, trust, truth, water, water, and health, Weather, wind, work
2、 Uncountable nouns can be singular or plural
1. Uncountable nouns generally have no singular or plural, but material nouns can have singular or plural when they represent different categories, such as tea, a tea, etc. common words of this kind include fruit, food, coffee, etc
2. Abstract nouns can also be plural when they refer to concrete things

Help me translate into English, thank you, ~ \ (≥ ▽≤) / ~ Lala
She is going to have a cool summer becauser it's not very hOt in Canada
Thank you ~ (≥ ▽≤) / ~ Lala

She's going to have a cool summer because it's not too hot in Canada
Learning is a pleasure! (*^__ ^*)
Please accept it in time, thank you!

Five eighths of a meter is as long as one eighth of a meter?

Five eighths of a meter is as long as one eighth of a five meter

English translation
The teacher asked me to explain the passage on the test paper and the following topics. I really don't understand this article. Can any netizens translate it for me? I took out my family
Translated essay:
Robots are smart.With their computer brains,they can help people work in dangerous places or do difficult jobs.Some robots do regular jobs.Bobby ,the mail carrier,brings mail to a large office building in Washington,D.C.He is one of the 250 mail carriers in the United States.
Mr Leachim,who weighs two hundred pounds and is six feet tall,has some advantages as a teacher.One is that he does not forget details.He knows each child's name,the parents' names and what each child knows and needs to know.In addition, he knows each child's pets and hobbies.Mr Leachim does not make mistakes.Each Child goes and tells his or her name, then dials an identification number.His computer brain puts the child's voice and number together.He identifies the child with no mistakes.Then he starts the lesson.
Another advantage is that Mr Leachim is flexible.If the children need more time to do their lessons they can move switches.In this way they can repeat Mr Leachim's lesson over and over again.When the children do a good job,he tells them something interesting about their hobbies.At the end of the lesson the children switch Mr Leachim off.
Choose the best answer according to the passage
61.The first paragraph of the passage tells us ________ .
A.human beings are not as smart as robots
B.robots will take the place of man to rule the earth
C.we can only use robots to do some regular jobs
D.robots can help people in many different ways
62.Mr Leachim's ________ make(s) him a good teacher.
A.knowledge B.appearance
C.advantages D.energy
63.What is the important thing Mr Leachim can do in his lesson?
A.To meet the needs of each student.
B.To talk to the students in different langu-ages.
C.To keep everyone's interest in his lesson.
D.To introduce more hobbies to the chil-dren.
64.The word “flexible” in the paragraph means ________ .
A.not strict B.not hard
C.suitable D.changeable
65.Which of the following statements may be true according to the passage?
A.There are 250 robot teachers in the United States.
B.Mr Leachim is run and controlled by electricity.
C.Bobby works in a large office building in Washington D.C.
D.The lessons taught by Mr Leachim are given on a TV set.

Robots are very smart. They can use computer brains to help people do some work or difficult work in dangerous places. Some robots do routine work. Robbie, a mail carrier, sends mail to an office building in d.c. Washington. He is one of 250 mail carriers in the United States
There's a 200 pound, six foot Mr. Richmond, As a teacher, he has his advantages. One of them is that he won't forget the details. He knows every child's name, parents' name and what every child knows and needs to know. And he knows every child's pet and their spare time are OK. Mr. Richmond never makes mistakes. Every child goes and says his or her name and dials an identification number. His phone The brain writes down the children's voices and numbers together. He can identify the children accurately. Then he begins the class
Another advantage of Mr. Richmond (robot) is that it is flexible. If children need more time to finish their homework, they can turn the switch. They can repeat Mr. Richmond's lesson over and over again in this way. He tells them some interesting things about their hobbies when they do well, The children turned off Mr. Richmond

Least common multiple of 18,15,12

18=3*3*2
15=3*5
12=3*2*2
Least common multiple = 3 * 5 * 6 * 2 = 180

When 2 / 3 x plus 1 equals 7, the value in equation 2x minus 5Y equals 6 is

Are you asking about the value of Y, y = 12 / 5