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Lesechka [4]
2 years ago
8

In a 4-digit number, the first two digits are both 2. The sum of the ones and tens digits is14. What numbera are possible.

Mathematics
1 answer:
yaroslaw [1]2 years ago
6 0

Answer:

2295, 2286, 2277, 2268, 2259

Step-by-step explanation:

We are dealing with a number of 4 digits, whose first two digits are 2's. So the number looks like 2~2~ d_2 ~d_1 (where the last 2 digits are to be determined).

The exercise says that the sum of the ones and tens digits is 14. The ones digit is the last digit (the right most digit, which we are denoting by d_1), and the tens digit is the second right most digit (which we are denoting by d_2). So d_1+d_2=14

Since they're digits, their only possible values are 0,1,2,3,4,5,6,7,8,9.

If d1 was 0, d2 would have to be 14 (since they should add up to 14), which is impossible.

If d1 was 1, d2 would have to be 13 (since they should add up to 14), which is impossible.

If d1 was 2, d2 would have to be 12, which is impossible.

And so going through all possibilities, we get that the only possible ones are:

d1=5~ and~ d_2=9

d1=6~ and~ d_2=8

d1=7~ and~ d_2=7

d1=8~ and~ d_2=6

d1=9~ and~ d_2=5

And so the possible 4-digits numbers are 2295, 2286, 2277, 2268, 2259.

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Luba_88 [7]
<span>2% of 350 = 7
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285% of 200 = 570
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24 red marbles is 40% of 60 marbles

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4 0
3 years ago
Find X. 2x + 15 = 20
lakkis [162]

Answer:

x = 5/2     or     x = 2.5

Step-by-step explanation:

To solve for x, we will have to get the equation 2x + 15 = 20 into the form x = _. That will be our answer.

2x + 15 = 20

Subtract 15 from both sides to get rid of the +15 on the left side.

2x = 20 - 15

Simplify.

2x = 5

Divide both sides by 2 to get rid of the coefficient of 2 on the left side.\

x = 5/2 = 2.5

x = 5/2   or    x = 2.5

I hope you find my answer helpful. :)

3 0
3 years ago
The purpose of a battery in a circuit is to _____.
skelet666 [1.2K]

Answer:

Increase the potential of charges in the circuit

Step-by-step explanation:

Hope this is correct

HAVE A GOOD DAY!

7 0
2 years ago
Fraction 13/250 as a decimal
Luba_88 [7]
To find the decimal form of 13/250 you must divide 13 by 250 which is 0.052
5 0
3 years ago
Read 2 more answers
Write 3,200 in scientific notation
spin [16.1K]

Answer:

The answer is 3.2 E 3 or 3.2 x 10^3

You move back 3 spaces which is 3.2, since you moved back 3 spaces, you put 3 as the power/exponet.

To be more satisfied, 3.2 is your base number, it is the big number Below the power/exponent. The power/exponent is 3, you moved 3 spaces and you moved to the left, so it is represented as a positive power/exponent.

Hope this helps.

8 0
2 years ago
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