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krek1111 [17]
3 years ago
9

Is the number even or odd?2018−2017+2016−2015 + . . . +2–1

Mathematics
1 answer:
scoundrel [369]3 years ago
5 0

Answer:

It is the odd number 1009

Step-by-step explanation:

Notice that this problem involves the addition of a number "1" per consecutive pair (a number minus the integer that immediately precedes it), so it adds "1" (one) every couple of consecutive numbers.

2018 - 2017 = 1

2016 - 2015 = 1

...

4- 3 = 1

2 - 1 = 1

That means it is the addition of 2018/2 = 1009 numbers "1". This clearly results on the number 1009, which is an odd number.

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maxonik [38]

Answer:

6; 54 is 6 times 9

Step-by-step explanation:

9x = 54

x = 54/9

x = 6

6 0
3 years ago
What is 2 log x - logy - 2 log z written as a single logarithm?
Hitman42 [59]

Answer:

Log [x^2 / yz^2]

Step-by-step explanation:

2log(x) =log(x^2)

-log(y) = The minus sign means that you can divide it by first log(x^2)

-2log(z) =log(z^2), and the minus sign again means you can divide it by the first log(x^2)

So, the whole thing can be written like this:

Log(x^2) / [log(y)*log(z^2)], OR:

Log [x^2 / yz^2]

4 0
3 years ago
What is the area of this parallelogram?
Step2247 [10]
It depends on the side lengths, but the sum of all the angles is 360°
4 0
3 years ago
Read 2 more answers
Jane is having difficulty deciding whether to put her savings in the Mystic Bank or in the Four Rivers Bank. Mystic offers a 12%
Ad libitum [116K]
The answer to this question would be <span>B. Mystic
</span><span>

Since the rate should be constant, option C and D wouldn't be true.</span>
If the Four Rivers bank gives 12% per year and Mystic Bank gives 14% per year, it will be 3% per quarter year for Four Rivers Bank and 7% semiannually for Mystic Bank. 
The total rate would become:
Four rivers 103%^4= 1.125
Mystic : 107%^2= 1.145

5 0
3 years ago
https://lists.office.com/Images/2fce1dfb-919f-4938-aab8-c47f0fc9182d/759a6d77-ea1a-4b50-a9bc-86157c96a662/T14LEZ48DGIIWGRBN9LPBU
Darina [25.2K]

Answer:

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Step-by-step explanation:

i have a pitucre your welcome :)

7 0
3 years ago
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