What is the two-way division where one-third times one-quarter equals one twelfth?

What is the two-way division where one-third times one-quarter equals one twelfth?

One twelfth divided by one fourth equals one third, one twelfth divided by one third equals one fourth

Write the division according to three seventh times seven sixths equals one half

One half divided by three seventh equals seven sixths
1/2÷3/7＝7/6

3 / 4 * 2 / 3 = 1 / 2!

1 / 2 divided by 2 / 3 = 1 / 32 / 4 divided by 3 / 4 = 2 / 3

6.85 minus one-half of a number equals 2.13. What's the number

Let this number be X
6.85-1/2X=2.13
6.85-0.5X=2.13
0.5X=6.85-2.13
0.5X=4.72
X=9.44
A: the number is 9.44

Relationship between sliding friction and elastic force

The sliding friction is equal to the dynamic friction coefficient multiplied by the elastic force

The explanation that x is equal to 0.6 and Wu Qijiang's constant a is given

2. The general form of quadratic equation of one variable is ax 2 + BX + C = 0 (a ≠ 0). The coefficients of quadratic term, coefficient of linear term and constant term of quadratic equation of one variable are determined according to the general form

A and B two cars from 600 kilometers apart from the two places at the same time, after 5 hours, the two cars meet two speed ratio is 5:7, a and B two car speed respectively

Let a speed be 5 x, then B speed be 7 X
5(5x+7x)=600
12x=120
x=10
Then a 5x = 50, B 7x = 70

1 of a + a = 4 (0

a+1/a=4 (0

】-Factorization of 4x ^ (n-1) - 6x ^ (n + 1)
-Factorization of 4x ^ (n-1) - 6x ^ (n + 1)

-4x^(n-1)-6x^(n+1)
=-2x~（N-1）〈2+3X`~2〉
~The root sign represents the bracket

There are five boxes of fruit, each box weighs 50N. Now we need to move them from the first floor to the third floor. You can move them all at one time, or you can move a box five times at a time. Which way do you think you can do more work on fruit? Which way needs to consume more energy in your body? Please explain why

(1) The total gravity of the fruit is g matter, and the work done on the fruit is: W useful = g matter h. so the work done on the fruit by the two methods is the same; (2) when they are all carried up at one time, w extra 1 = g person h. when they are carried up five times, w extra 2 = 5g person h. from W total = w useful + W extra, we can know that w total 1 < w total 2. Answer: the work done on the fruit by the two methods is the same; each time, a box is carried up five times There's a lot of energy inside