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Sveta_85 [38]
3 years ago
11

At a high school the average grade for the first semester for all subjects was 79.3. Based on this mean , the principal conclude

s that half of the grades were 79.3. Higher is her conclusion justified? Why or why not?
Mathematics
1 answer:
svet-max [94.6K]3 years ago
4 0

Answer:

That is incorrect. It would be appropriate if the median were 79.3, since the median is the value in the middle (when placing the data in order).

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The difference of the square of a number and 10 is equal to 3 times that number. Find the negative solution.
Harrizon [31]

Answer:

-2

Step-by-step explanation:

Let's call the number x. The statement tells us that

x^2 - 10 = 3x, or

x^2-3x-10 = 0

Factoring:

(x-5)(x+2) = 0. Here, we see that there are two solutions: x = 5 and x = -2. So, the negative solution is x = -2.

3 0
2 years ago
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OverLord2011 [107]
3/5=6/10
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1/10 or 6 minutes longer
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navik [9.2K]

Answer:

(x+12)^2=84

Step-by-step explanation:

x^2+24x+60=0

x^2+24x=-60

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(x+12)^2=84 (ans)

4 0
2 years ago
A group of students were surveyed to find out if they like building snowmen or skiing as a winter activity. The results of the s
nignag [31]

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Step-by-step explanation:

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3 years ago
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What is 0.006 divided by 0.24
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8 0
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