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GREYUIT [131]
3 years ago
12

How many strings of 4 decimal digit do not contain the same digit twice?

Mathematics
1 answer:
goblinko [34]3 years ago
7 0
9*9*8*7

You can choose 9 digits for the first digit, 9 Fót the second (because IT can be 0) and 8 Fót the third etc.. hope this helps
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Please help me?????/!!!!!!!!
hodyreva [135]
This is so easy okay just make sure if it’s true or not
7 0
3 years ago
I need help plz will give brainliest!!!
Leokris [45]

Answer:

18 red marbles

Step-by-step explanation:

Because the ratio of yellow marbles to red marbles is 1:6 in the population, the expected number of red marbles is 6 times the number of yellow marbles in the representative sample. there should be 18 red marbles.

7 0
3 years ago
2 (x + 3) + 5 x = 3 (2 x minus 1)
SashulF [63]

hello

Step-by-step explanation:

3 0
3 years ago
What the expression (4f-3+2g)-(4g+2)
galben [10]
For this question you can say: 
4f -3 +2g - 4g -2
so now you can simplify and find the answer:
4f -3 -2g -2 = 4f -2g -5
and that's the answer :)))
I hope this is helpful
have a nice day 
8 0
3 years ago
Kendra has a painting canvas that is 20 inches wide by 37 inches high. She painted a red rose, which covered 50% of the canvas.
uysha [10]
The total area is:
 A = (20) * (37)
 A = 740 in ^ 2
 We can make the following rule of three:
 740in ^ 2 -----> 100%
 x --------------> 50%
 Clearing x we have:
 x = (50/100) * (740)
 x = 370 in ^ 2
 Answer:
 
the area of the canvas which was covered by the red rose was:
 
x = 370 in ^ 2
6 0
3 years ago
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