There is an additional reward for a math problem

Let 14 o'clock x minutes, then 60 degrees + 30 degrees 60 minutes) x = 6 degrees x

x=60 From 2 April 2 at 2:60 p.m. to 23 March at 12 o'clock The clock shows elapsed time.

10 days (3600 24)+3600 2+60 60 seconds.

The actual time and clock display time ratio is: (3600 24) (3600 24-30).

So the real thing happened: [10 days (3600 24)+3600 2+60 60 seconds.]

Then you can calculate the exact time.

It's a lot of numbers, landlord, it's good if I write so much, please press the calculator yourself, and my head will become a pig's head.

William's algorithm is wrong, and one is miscalculated X

The other is that the clock is 30 seconds slower every day, and the day here must be a day that says real time, not that this clock travels 24 hours.

Therefore, you can't use the time the clock travels to calculate the total number of slow seconds.

The total elapsed clock time can only be calculated by multiplying the ratio of real time to clock time.

3,600 seconds in an hour, 86,400 seconds in a day.

30 seconds slower in a day, an average of slow seconds per hour, seconds per minute.

For a total of 10 days, it was 300 seconds slower.

On the 2nd, 12-14 p.m. was slow again.

Another 600 59 minutes, 600 59 60* seconds went when it coincided.

300+ seconds in total.

Known set a=,b=,If a falls to the right below a horizontal line b and b ≠ empty set, find the value range of the real number m, your question makes me very depressed. 1. The set a=, m+1 2m-1 obtains that m is greater than or equal to 2

m m-1 is greater than or equal to 5The answer is that m is greater than or equal to 3

The second question, set x 10,000 pieces, the profit is 20x-1 2 x 2 + 2x+20, simplify, -2/1 (x-18) 2 + 142When x=18, the maximum value is taken. The answer is 180,000 pieces.

1. From (x-5)(x+2)=<0, -2==-2 and 2m-1=<5 and m+1=<2m-1 can be obtained, and 2=2 can be obtained, that is, the maximum value of 20x-(1 2)x 2-2x-20 is obtained, which is simplified.

1 2) x 2 + 18x-20, and then by the formula -b (2a) = 18, then the production of 180,000 pieces to obtain the maximum profit.

It looks like it's in the exam room, hahaha.

17000 divided by 4000 plus 4500 equals 2 hours.

Add left and subtract right, and add up and subtract down.

You can replace x with x-1 first, and you will get 2(x-1) 2+x-1-1=2x 2-3x

Then add 1 to get 2x 2-3x+1, and the final analytical formula for g(x) is 2x 2-3x+1

Move one unit to the right: f(x) 2(x+1) 2+(x+1)-1 2x 2+5x+2Move down one unit: g(x) 2x 2+5x+1

The process is as follows:

Let the width of the original rectangle be x and the length be y

Then the side length of the square is x + 6 = y - 6, so we get y = x + 12

Square area = (x + 6) * (x + 6) = x 2 + 12x + 36

Rectangle area = (x + 12) * x = x 2 + 12 so there is, the area has increased, an increase of 36 square meters.

Set up two supermarkets originally had x boxes.

So x-45=

x=80, so A and B originally put in 80 cartons of milk.

Shejia supermarket into x cartons of milk.

x-45）/(x-20)=

The solution is x=260 3, so the two superpowers each enter 260 3 cartons of milk.

Set up X boxes for supermarkets A and B.

x-45=（x-24）*62..5%

x=80 So A and B each used to get 80 cartons of milk.

If both of them go into box x, then (x-45 x-24)=

So x=80