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Agata [3.3K]
4 years ago
11

Please some one help me.

Mathematics
1 answer:
KIM [24]4 years ago
8 0
8a
TSA = 2πrh + 2<span>πr^2
</span>TSA = 471 + 157 (or 150π + 50π)
TSA = 628 cm^2 (or 200π)


8b

628 x $3 = $1884
cost = $1884

8c.

V = πr^2h = π 5^ 5 (15) = 375π (or 1177.5 if use π = 3.14)

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The answer should be 6.34. This is because since the 6 is in the ones place, it should be the whole number. The 3 is a tenths so it should be the first number after the decimal. Finally, since 4 is in the hundredths place, it should be two places from the whole number.
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Answer:

<h2><u><em>Y= 10/3 or 3.333....</em></u></h2>

Step-by-step explanation:

12y-19= 6y+1

12y-6y = 1 +19

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y= 10/3 or 3.33..

 

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How many equal sections divide a directed line segment if it is to be partitioned with a 2:7 ratio? 2, the least number given in
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Answer:

  9, the sum of the numbers given in the ratio

Step-by-step explanation:

The reduced ratio 2 : 7 means that two parts correspond to one length and 7 parts correspond to the other length. That is, there are a total of 2+7 = 9 parts in the full length of the segment.

It is convenient to think of the line segment as being divided into 9 equal parts.

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<em>Additional comments</em>

It is often helpful to consider the total number of "ratio units" in a given ratio. For example, in this problem, the shorter segment is 2/9 of the whole, and the longer one is 7/9 of the whole.

It can also be useful to consider what a "ratio unit" represents. If the whole segment is 27 inches long, then each of the 9 ratio units will represent 3 inches, for example. This means the division 2:7 is 2(3 in):7(3 in) = 6 in : 21 in.

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The statements about the function that are true are

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<h3>How to interpret the graph?</h3>

The equation of the graph is given as

f(x) = (x - 1)(x + 7)

The graph of the function is added as an attachment

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This is so because the graph has a minimum point of (-3, -16)

Also, the graph crosses the x-axis at x = 1 and x = -7

This means that the graph is positive at x >1 and x >-7

Because the vertex is a minimum, the graph is increasing at the left of its symmetry i.e. x > -3

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