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alexandr402 [8]
4 years ago
12

3.8,4.2,5.3,x; mean 4.8

Mathematics
2 answers:
jenyasd209 [6]4 years ago
6 0
Hello!

I would assume we are solving for x, so lets try to understand what we need to do here.

to find the mean, you add all the numbers together and divide by how many number sets there are.

so in this case: (3.8+4.2+5.3+x)/4

so what I did, was go in reverse

(4.8*4)-3.8-4.2-5.3=5.9

so x must be 5.9

I hope this helps, and have a nice day!
Free_Kalibri [48]4 years ago
3 0

Answer: 5.9

Step-by-step explanation:

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Read 2 more answers
X^2-5x=-4 . I need to find the zeroes
GrogVix [38]
The zeros of a quadratic equation are equal to the x-intercepts of its graph. In other words, you must find the x-value that causes the expression to equal zero. Start by adding 4 to both sides of the equation:

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Now calculate each piece separately, starting with the first one:

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Add 1 to both sides of the equation:

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Add 4 to both sides of the equation:

x = 4

We have proven that x = 4. Consequently, we have proven that (x = 1) and (x = 4) are the two zeros of this quadratic equation.

I hope this helps!
4 0
4 years ago
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