The original price of a set of "math PHS" is 50 yuan. How much should it be after two consecutive price cuts of 10%

The original price of a set of "math PHS" is 50 yuan. How much should it be after two consecutive price cuts of 10%

50 (1-10%) = 45 yuan
45 (1-10%) = 40.5 yuan
A: the price should be 40.5 yuan

If the price of a commodity is RMB a after a 10% discount, the original price of the commodity is RMB______ Yuan

9 = 109a yuan

The price of a commodity increases by 10% and then decreases by 10%. The current price is 49.5 yuan. What's the original price

X*1.1*0.9=49.5,x=50

Find out the law of the following sequence. Fill in the blanks__ .1 2 5 12 27 58 __ 248 ……

121 should be filled in
1+1+0=2
2+2+1=5
5+5+2=12
12+12+3=27
27+27+4=58
58+58+5=121
121+121+6=248

Mr. Li from the first floor to the fourth floor to use 1. From the fourth floor to the first floor to use 1 minute, Mr. Li up and down the floor to use how many seconds?

1.5 / (4-1) + 1 / (4-1) = 1 / 2 + 1 / 3 = 5 / 6 minutes

25,40,58,79103,. General term of sequence?

a(n)=(3n²＋21n＋26)/2

For processing a batch of parts, Master Wang processes 48 parts per hour, and the ratio of the number of parts processed per hour with Master Li is 4:5?

(48 + 48 × 54) × 3 = (48 + 60) × 3 = 108 × 3 = 324. A: 324 parts can be processed

Sequence questions: 2,33,45,58, ()

Separate the ten and individual digits of each number in the sequence = > it can be decomposed into the combination of 3, 4, 5, 6 and 2, 3, 5, 8, 12. The first order of 3, 4, 5, 6 is equal difference, and the second order of 2, 3, 5, 8, 12 is equal difference

It takes Master Wang six hours to process a batch of parts, while Master Li processes 30 parts per hour. Now the two work together,
When it was finished, Master Wang finished two fifths of the parts, and how many parts did Master Li complete

If master Wang completes two fifths, Master Li completes three fifths, and Master Wang's efficiency is 2 / 3 of that of Master Li. Then master Wang processes 30 * 2 / 3 = 20 parts per hour, and the total number of parts is 6 * 20 = 120. Master Li completes three fifths, that is 120 * 3 / 5 = 72

Six (people's Education Edition) mathematics homework P6 urgent answer must be people's Education Edition
Answers to P6 of mathematics homework
emergency
It must be published by people's education press

125.6 226.082.512 2.57481.256 2.826 rectangle: 10 * 4 = 40cm 40 * 4 + 4 * 4 * 2 = 192 cylinder: 4 * 3.14 * 10 + (4 / 2) square * 3.14 * 2 = 150.72192-150.72 = 41.28 rectangle area is large, large 41.28s bottom (8 / 2) square * 3.14 * 2 = 100.48s side 8 * 3.14 * 50 = 1256 ④: 1