In order to promote a product priced at M yuan, supermarket a, supermarket B and supermarket C cut prices by 20% twice in a row, 40% at a time in supermarket B, 30% at the first time in supermarket C and 10% at the second time. At this time, the most cost-effective supermarket for customers to buy this product is () A. A B. B C. C D. B or C

In order to promote a product priced at M yuan, supermarket a, supermarket B and supermarket C cut prices by 20% twice in a row, 40% at a time in supermarket B, 30% at the first time in supermarket C and 10% at the second time. At this time, the most cost-effective supermarket for customers to buy this product is () A. A B. B C. C D. B or C

After the price reduction, the price of the three supermarkets is: a (1-20%) 2m = 0.64M, B (1-40%) M = 0.6m, C (1-30%) (1-10%) M = 0.63M, because 0.6m < 0.63M < 0.64M, so at this time, the most cost-effective supermarket is B

In order to promote a product priced at M yuan, supermarket a, supermarket B and supermarket C cut prices by 20% twice in a row, 40% at a time in supermarket B, 30% at the first time in supermarket C and 10% at the second time. At this time, the most cost-effective supermarket for customers to buy this product is ()
A. A B. B C. C D. B or C

After the price reduction, the price of the three supermarkets is: a (1-20%) 2m = 0.64M, B (1-40%) M = 0.6m, C (1-30%) (1-10%) M = 0.63M, because 0.6m < 0.63M < 0.64M, so at this time, the most cost-effective supermarket is B

How much is 38025 in scientific notation

38025 = 4 power of 3.80 * 10

Sixth grade Chinese volume 2 Lesson 19 polyphonic PEP
The dream of a thousand years in the present fast! The more the better

Today, Korea
Carry -- record, carry
China -- China, Huashan
Fall -- fall, surrender

As shown in the figure, both the quadrilateral ABCD and the quadrilateral efcd are parallelograms. Is the quadrilateral ABCD a parallelogram? Explain your reasons

The quadrilateral ABCD is a parallelogram. Reason: ∵ the quadrilateral ABCD is a parallelogram, ∥ ab ∥ EF and ab = EF. Similarly, EF ∥ DC and EF = DC, ∥ ab ∥ CD and ab = CD, ∥ the quadrilateral ABCD is a parallelogram

The items in the sequence {2N-1} whose first term is 1 are grouped as follows: (1), (3,5), (7,9,11), (13,15,17,19)
The items in the sequence {2N-1} are grouped as follows: (1), (3,5), (7,9,11), (13,15,17,19),..., if the nth group has n numbers, then the first number of the nth group is
The answer is n ^ 2-N + 1,

This problem is to find the first number of group n, so just observe the first number of each group 1, 3, 7, 13 A2-a1 = 3-1 = 2 = 2 * 1a3-a2 = 7-3 = 4 = 2 * 2a4-a3 = 13-7 = 6 = 2 * 3 An-a (n-1) = 2 * (n-1) the two sides of the equation are added respectively, the middle items on the left are offset, and the equal difference with tolerance of 2 is on the right

An English judgment question
4 If you need to go to the toilet when you are in a public place,you try to look for the sign which reads WC
Is it right or wrong
The first two people's answers are not what they asked. What I asked is whether the meaning of this sentence is right. The word and sentence itself are not wrong. I'm not asking you to change the sentence

A long time ago, there was a water closet in toilet toilet. When people mentioned water closet, they thought of it, so water closet became the pronoun of it. Later, for convenience, people used the initial letter W.C. of water closet to replace it

As shown in the figure, fold the square ABCD in half with the crease of Mn. Fold vertex d to a point P on Mn with the crease of CE, and then fold vertex a to the same point on Mn with the crease of BF, then the degree of ∠ CPB is______ Degree

∵ quadrilateral ABCD is a square, ∵ CD = CB = Ba, ∵ vertex D is folded to a point P on Mn, the crease is CE, and then vertex A is folded to the same point on Mn, the crease is BF, ∵ PC = DC, Pb = AB, ∵ PC = Pb = BC, ∵ PAB is an equilateral triangle,