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777dan777 [17]
3 years ago
11

How many positive numbers from 1 to 999 have the sum of

Mathematics
1 answer:
Elenna [48]3 years ago
5 0

Answer:

45 positive numbers have the sum of  their digits equal to 8

Step-by-step explanation:

given data

number = 1 to 999

sum n = 8

to find out

positive numbers

solution

we will choose number by this formula

(n+1) (n+2) / 2

here n is 8

so put this value we get number that

positive numbers = (n+1) (n+2) / 2

positive numbers = (8+1) (8+2) / 2

positive numbers = 90 / 2

so 45 positive numbers have the sum of  their digits equal to 8

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SOVA2 [1]

Answer:

5/7

Step-by-step explanation:

You find a slope by using the equation y2-y1/x2-x1.

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10/14

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6 0
3 years ago
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David bought a used Dodge Challenger for $14,000. The value of the car depreciates 11% per year from the time he bought the car.
statuscvo [17]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
What is the inverse of the function f(x) = 2x – 10?
Nadusha1986 [10]

Answer:

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6 0
3 years ago
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torisob [31]
Y=2+1
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So y=3
The answer is y=3
6 0
3 years ago
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