3 years ago

What is 123456789+1234567890

Mathematics

2 answers:

Hitman42 [59]3 years ago

8 0

Answer:

1358024679

Step-by-step explanation:

madam [21]3 years ago

5 0

Answer

1358024679

Step-by-step explanation:

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3x + 8y= -5<br> -2x + 2y= 18

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Answer:

3x+8y=-5-equatin.1

-2x+2y=18-equation.2

now,

subtracting both equation.1 by equation.2,then

3x+8y=-5

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3 years ago

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3 years ago

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$\large{\boxed{\sin\alpha\cos\beta-\cos\alpha\sin\beta=\sin(\alpha-\beta)}}$

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4 years ago

Jeremy is writing down a sequence of integers. He writes 1 as his first number. Then, he

Pachacha [2.7K]

Answer:

<em>4 is the unit's digit of the 20th number.</em>

Step-by-step explanation:

Let us try to find out a pattern for the unit's digit of the terms.

1st term is 1, so unit's digit of 1st term is 1.

2nd term $1^{2} + 3 = 4$ so unit's digit is 4.

3rd term $4^{2} + 3 = 19$ so unit's digit is 9.

4th term $19^{2} + 3 = 364$ so unit's digit is 4.

5th term's unit digit: Square of unit's digit of 4th term + 3

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We can see that the pattern is

3rd, 5th, 7th ...... terms have 9 as the unit's digit.

2nd, 4th, 6th.... terms have 4 as the unit's digit.

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3 years ago