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Leya [2.2K]
3 years ago
8

Find an

Mathematics
1 answer:
alina1380 [7]3 years ago
5 0

Answer:

5x + 13y

Step-by-step explanation:

-x + 9y- (-6x) + 4y

-x + 9y + 6x +4y

(-x + 6x) + (9y + 4y)

5x + 13y

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How many different 7-digit number plates can be made if the first 2 digits are letters and the last 5 digits are numbers, for ex
saw5 [17]

Answer:

We can use seven letters and numbers.

I am assuming that any numeral in the range 0..9 or any letter from the English alphabet A..Z can appear in any position, with no blank spaces allowed and no restrictions on repetition. I am also assuming that plates with fewer than seven letters and numbers are not allowed.

So, for example A879BX8 is acceptable, so are 5555555 and ABCDEFG, but not A.123.ZX or…..7A, where the dot represents a space.

I am also assuming that you can only use upper case letters.

With these restrictions, there are 36 possibilities for each space and the total number of valid number plates would be 36^7 = 78,364,164,096, let's say about 78 billion.

It is estimated that there are about 1.3 billion cars, trucks and buses in the road today. This number plate system therefore allows more than enough unique license plates. I'd even hazard a guess that it might be more than enough for every road vehicle that has ever been built or ever will be.

In practice there would be other restrictions, for example only letters in some positions and only numbers in others. There'd still be plenty to go around.

Step-by-step explanation:

5 0
2 years ago
Micah is twice as old as Richard. Richard is three times as old as Ken. Ken is six years old. How old is Micah?
iVinArrow [24]

Answer:

36

Step-by-step explanation:

Ken = 6 yo

6 *3 = 18

Richard = 18 yo

8 * 2 = 36

Micah = 36

7 0
3 years ago
A deposit of 4000 at 9.5% for 270 days
Lapatulllka [165]
The deposit is 4,000 so P = 4000.

The interest rate is 9.5%

9.5 ÷ 100 = 0.095.

r = 0.095: I = P*r*t*: I = P*r*tl  = 4000*0.095*

(270/365)I = 281.095890410959 I = 281.10

So your answer would be: 281.10
8 0
3 years ago
Solve: 4 x 11 + 5 x 28 + 4
Zarrin [17]
188

4x11 + 5 x 28 + 4

44 + 140 + 4

188
7 0
1 year ago
Read 2 more answers
2+2+3+6+8-5+0+9-8+4=​
ryzh [129]

Answer:

2+2=4+3=7+6=13+8=16+5=21+9=30-8=22+4=26

7 0
3 years ago
Read 2 more answers
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