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sdas [7]
3 years ago
13

Help me fast plz anybody

Mathematics
1 answer:
charle [14.2K]3 years ago
8 0
1) Unknown info = amount of potting soil he bought last week
2). 28=2x+4
Where x=amount of potting soil he bought last week
3). 28=2x+4
-4 -4
---------------------
24=2x
/2 /2
----------------------
X=12

4) Emmanuel bought 12 lbs of potting soil last week
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Polygon F has an area of 36 square units. Aimar drew a scaled version of Polygon F and labeled it Polygon G. Polygon G has an ar
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Area is a squared number.  We know that from the label we use when we solve problems involving area.  Perimeter is a single unit label.  This single unit label can also be used to find scale factor, since single unit labels are one-to-one.  If the area of polygon F is 36, that means that the single unit measure was a number that was squared to get to the area.  Same goes for polygon G.  That means that in order to find the single unit measure of each of those we have to take the square root of the area.  The square root of 36 is 6, and the square root of 4 is 2.  6:2 is the scale factor, but that can be reduced to 3:1, larger to smaller.

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3 years ago
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What expression represents the area of the triangle​
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Answer:

The first choice

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4 years ago
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4 years ago
Reports on a student's ACT, SAT, or MCAT usually give the percentile as well as the actual score. The percentile is just the cum
Nimfa-mama [501]

Answer:

The percentile for William is 76.97.

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

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2) Solution to the problem

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And z follows a normal standard distribution. We can find the z scor for the score X=30 like this:

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And now we can find the probability using excel or a table, on this way:

P(Z

And that means the 76.97 percentile since we have on the left of the score of 30, 0.7697 of the area on the left and 0.2303 of the area on the right.

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6 0
3 years ago
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