3 years ago

Which of the following sentences correctly keeps a consistent verb tense?

Mathematics

1 answer:

snow_tiger [21]3 years ago

6 0

Answer:

The first sentence

Step-by-step explanation:

both sentences stay in past tense.

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what is the units digit of the sum of 1!+2!+3! ... n! when n=2019. Include an explanation and what a unit digit is.

horsena [70]

Hey!

Finding the factorial for the first few numbers, we have:

1!=1

2!=2

3!=6

4!=24

5!=120

6!=720

7!=720*7

8!=720*56

What we can see as a clear pattern from 5! and on is that our number ends with a 0, making the units digit 0. Therefore, when we add the units digit of 5! and on, we have a result of 0. So, we can simply add the units digits of 1!, 2!, 3!, and 4!, which is 1+2+6+4=13. Since the units digit is the last number, we can drop the tens place to get an answer of 3.

Feel free to ask further questions!

8 0

3 years ago

What is 125 x 64 in expanded form

Nat2105 [25]

I think I believe it’s 8000

7 0

3 years ago

Write it as a product: -<img src="https://tex.z-dn.net/?f=ax%5E%7B6%7D" id="TexFormula1" title="ax^{6}" alt="ax^{6}" align="absm

IrinaK [193]

Answer:

$\frac{-abx^{6}+1 }{b}$