What is 2 / 3 of 1 / 6? The formula is ()

Two out of three out of one in six is one out of nine
1 / 6 × 2 / 3 = 1 / 9

1 and 3 / 4-5 / 6 + (- 1 / 2) - 1 and 1 / 6 = formula

7/4 + 5/6 -1/2 -7/6＝42/24 +20/24 -12/24 -28/24＝22/24＝11/12

The eighth power of 2 times the ninth power of 5 is equal to?

The eighth power of 2 multiplied by the ninth power of 5
=The eighth power of 2 multiplied by the eighth power of 5 multiplied by 5
=5 times 10 to the eighth power

Given that the rank of M × n matrix A is n-1, α 1 and α 2 are two different solutions of the homogeneous linear equation system AX = 0, K is an arbitrary constant, then the general solution of the equation system AX = 0 is ()
A. kα1B. kα2C. k（α1+α2）D. k（α1-α2）

From the rank of M × n matrix A is n-1, we know that the fundamental solution system of AX = 0 contains only one solution vector. Therefore, in order to form the fundamental solution system, the solution vector must be a non-zero vector. We know that α 1 and α 2 are two different solutions of the homogeneous linear equations AX = 0. α 1 - α 2 must be a non-zero solution of AX = 0. The general solution of AX = 0 can be expressed as K (...)

40 points for 3 parts processed by Party A and 30 points for 4 same parts processed by Party B. the efficiency ratio of Party A and Party B is ()
① 3：4 ② 4：3 ③ 9：16 ④ 16 ：9

The efficiency of a was 40 / 3
The efficiency of B is 30 / 4
The ratio of 40 / 3 to 30 / 4 is 16 / 9
Option 4

41 = 7x + 6 (the process of solving the equation)

41-6=7x+-6
35=7x
x=5

In order to know that 1 / 4 of the grain stored in warehouse A is equal to 1 / 3 of that in warehouse B. how much grain is stored in each warehouse?

1680 ^ (13 ^ 14 + 1), = 1680 ^ 73, = 1680 × 37, = 720 (tons); tonnage of warehouse A: 1680-720 = 960 (tons); answer: 960 tons of grain are stored in warehouse A and 720 tons in warehouse B

Urgent!
1. Answer questions. 10 points will be added for one correct question and 6 points will be deducted for one wrong question
(1) Contestant No. 2 answered 8 questions and scored 64 points. How many questions did she answer correctly?
(2) No. 1 raced to answer 10 questions and scored 36 points. How many questions did he answer wrong?
(3) No. 3 raced to answer 16 questions and scored 16 points. How many questions did he answer correctly?
Where's the 16 on the fourth floor?

(1) Let's suppose that she answers x correctly and 8-x wrongly
10X+16（8-X）=64
X=7
(2) Let's suppose he answers 10-x wrong and 10-x right
16X+10（10-X）=36
X=4
(3) Let's suppose that he answers x correctly and 8-x wrongly
10X+16（16-X）=36
X=7
The formula is as follows: (1) 8 - (8 × 10-64) △ 16 = 7
(2)(100-36)÷16=4
(3)16-(16×10-16)÷16=7

Math score simple operation. To be simple!
1、215/1-5/5
=
=
2、3612/7+12/5
=
=
21x1/5-1/5
=
=
36x7/12+5/12
=
=
(it's a simple fraction, X is a multiplication sign)

1、﹙21－1﹚×1／5=20×1／5=4
2、36×﹙1－5／12﹚＋5／12=36×1－36×5／12＋5／12=36－﹙36－1﹚×5／12=257／12

In {an}, A3 = 7, the first three terms and S3 = 21, then q is the common ratio=______ ．

From A3 = 7, S3 = 21, we can get: a1q2 = 7a1 (1 + Q) = 14, we can get q = - 0.5 or 1, so the answer is - 0.5 or 1

What is 2 / 3 of 1 / 6? The formula is ()