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Vitek1552 [10]
4 years ago
6

The average of four numbers is 26.

Mathematics
1 answer:
Alchen [17]4 years ago
3 0

Answer: 26!!

Step-by-step explanation: the average is like the mean which is all 4 numbers added together divided by 4. 26 times 4 is 104. 20 +42+16  = 78. 104 - 78 is 26 so the 4th number is 26. you can check the work by adding 20 42 16 and 26 together which equals 104. 104 divided by 4 is 26!! so our answer is correct!!

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How do you simplify algebraic expressions?  
masya89 [10]
There are many reasons one may want to simplify, rearranging to find specific values - or maybe just making it simpler
Well, let's do some examples:
y(x(3+2)) +2 = -2y +2   <span>< I just made this one up, it looks really complicated right now, none the less it can be simplified easily
</span>y(3x+2x) + 2 = - 2y +2
3xy + 2xy + 2 = -2y +2
5xy + 2 = -2y +2    <-- the +2's dissapear because they cancel out
5xy = -2y

<span>And there we have it, that long expression has been simplified to something really simple.
</span>
Another example:
3(4(x+3(2 +z)) - 5)= 3y <span><- you can start where ever, I like starting in the middle
</span>3  *  (4 *  (x +  3*(2 + z)) -  5 ) = 3y  <span><-  here it is spaced out, we get a much better view
</span><span>3  *  (4 *  (x +  6 + 3z) -  5 ) = 3y</span>
3  * (4x + 24 + 12z - 5) = 3y <- divide both sides by 3 ..
4x + 24 + 12z - 5 = y <- much better
<span>
</span>Note: Simplify means solving to a degree, but you can't solve it because it has unknowns
7 0
3 years ago
Add the given numbers in the indicated base.<br> 12 four<br> 13 four<br> The sum is four
Triss [41]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Hellllllllllo aluachantar<br> Answer this I can’t seem how <br> What’s 2+2 then -3?
Alona [7]

Answer:

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Step-by-step explanation:

2+2=4

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6 0
3 years ago
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Answer:

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Step-by-step explanation:

6 0
3 years ago
Find the value of x needed to make the equation true.
MA_775_DIABLO [31]

Answer: 3 (first choice)

A power to a power gives a multiplication of powers, e.g.,

(7¹⁰)² = 7²⁰

So the left side is 7²⁰ / 7⁴ and we divide the top and bottom by 7 get we

(7¹⁰)² / 7⁴ =  7²⁰ / 7⁴ = 7¹⁹ / 7³

We compare that to the right side  7¹⁹ / 7ˣ  and it's clear x=3.

4 0
4 years ago
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