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S_A_V [24]
3 years ago
6

Two-digit natural numbers are formed, with replacement, from the digits 0 through 9.

Mathematics
2 answers:
alexdok [17]3 years ago
7 0

Answer:

The first digit of a two digit number can be any of digits 1 - 9. It cannot be 0 though. Therefore there are 9 possible digits for the first place.

There are 5 possible digits for the second position. The two digit number has to be odd and therefore the final digit must be 1,3,5,7 or 9

Therefore for each and every one of the nine first digits there are 5 digits that the second can be.

Therefore ANSWER = 9 * 5 = 45 possible permutations.

2. The largest two digit number = 99

Subtract 57 and you get 42

ANSWER = 42

The forty two numbers are 58 ,59, 60, 61......98, 99

Karolina [17]3 years ago
7 0

Answer:

50 two-digit odd numbers are formed

Step-by-step explanation:

From the digits from 0 to 9 to get two -digit odd numbers you will need to pair numbers from

0 to 9 as the first digit of the numbers = 10 possible numbers

and also you will need to pair the first digits with an odd number as the second digit .

to get the odd numbers as second digits you will need to pick from

 1 , 3 , 5 ,7 and 9 = 5 possible numbers.

zero is  considered in the first digit because zero can start a two digit natural number and zero is not considered in the second digit because zero is an even number.

to get the possible two -digit number you will have to multiple the possible numbers for the first digits with the possible numbers for the second digits which is =

        10 * 5 = 50 hence there will be 50 possible two-digit  odd numbers.

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What are the first five common multiples of 4 and 7
denis23 [38]
Easy, just write out the multiple of the numbers.

4: 4,8,12,16,20,24,28,32,36,40,44,48,52,56,60

7: 7,14,21,28,35,42,49,56,63,70 

Etc.

But a few common multiples:

28,56,84,112,140

These are the first 5 common multiples of 4 and 7.

6 0
3 years ago
What is the answer to 36 times 3\9?
irinina [24]
36 x 3/9.
3/9 = 0.33
0.33 x 36 = 12
7 0
2 years ago
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Destiny has 10$ and Elijah has 5$. I give each person the same amount of money each week. This situation can be represented with
Darina [25.2K]

Answer:

I do believe that the answer is 0 solutions.

Step-by-step explanation:

x+10 =x+5

Subtract 5 from both sides, you get:

x+5=x

Subtract x from both sides, and you get:

5=0 which is NOT true. Also I maybe wrong, pls don't be mad at me.

8 0
2 years ago
Janet made 75 more cookies to sell at the
UNO [17]

Answer:

200

Step-by-step explanation:

Janet = x + 75

Kathy = x

2x + 75 = 325

2x = 325 - 75

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4 0
3 years ago
Solve 5n^2=5 with the quadratic formula
Yanka [14]

Answer:

n = 1

Step-by-step explanation:

First, rearrange the equation to standard form 0 = ax² + bx + c, when everything equals 0.

5n² = 5

5n² - 5 = 0

State the variables a, b and c.

a = 5;  b = 0;  c = -5

Substitute a, b, and c into the quadratic formula.

n = \frac{-b ±\sqrt{b^{2}-4ac} }{2a}

n = \frac{-0 ±\sqrt{0^{2}-4(5)(-5)} }{2(5)}   Substitute

n = \frac{\sqrt{100} }{10}   Simplify inside the √ and bottom

n = \frac{10}{10}  Simplify the top

n = 1  Final answer

Therefore the solution is n = 1.

The quadratic formula usually is written with x, but it can be solved with any variable in standard form.

3 0
3 years ago
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