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Ludmilka [50]
3 years ago
11

I have 7 different calculus textbooks and 4 different number theory text books. In how many ways can I place the 11 text books o

n a bookshelf, in a row, if there must be a number theory text book in the middle, and there must be a calculus textbook at each end.
Mathematics
1 answer:
Misha Larkins [42]3 years ago
8 0

There are 7 ways to choose the calculus textbook at one end, then 6 ways to choose the calculus textbook at the other end.  Then there are 9 ways to choose the second textbook, 8 ways to choose the third textbook, and so on.  But then there are 4 ways to choose the number theory textbook, so there are 7*6*9!*4 = 60963840 ways that work.

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Possible answers:<br> A) 336cm <br> B) 110m<br> C) 588m<br> D) 1,029m
kozerog [31]

Answer: The area of the enclosure is 1,029 square meters

Step-by-step explanation: The first thing is to use the unit of measurement required by the question, and to do this we need to convert what we have to what is required.

If the scale of the diagram is given as every 4cm represents 7m, that means, every unit of the actual measurement would be given as

(X/4) x 7

For the length of the enclosure, we can determine that as follows;

Length = (28/4) x 7

Length = 7 x 7

Length = 49m

And for the width,

Width = (12/4) x 7

Width = 3 x 7

Width = 21m

Therefore, the area is calculated as,

Area = L x W

Area = 49 x 21

Area = 1029 m²

5 0
2 years ago
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zlopas [31]

Answer:

C &A

Step-by-step explanation:

Just by analyzing the problem you can match up the answers

Solve the problem in your head and the closest answer to that is the answer

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2 years ago
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Answer correct for brainliest
Illusion [34]
The answer is 59/12
4 0
2 years ago
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IM BEGGING FOR HELP! I AM SO CONFUSED I WILL AWARD YOU BRAINLIEST ANSWER IF YOU ANSWER THIS QUESTION PLEASE!!!! SOS!! (P.S. sorr
umka2103 [35]
32 floors
32*11=total feet from ground to top
h=297-4.4t
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8 0
2 years ago
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What is the equation of a line with a slope of -2 that passes through the point (-2,12)?
slavikrds [6]

Answer:

y=-2x + 8 which is the required equation

Which is option C

Step-by-step explanation:

Given:

Slope = m = -2

Given points are ( -2,12)

Which is

x = -2 and y =12

TO find:

Equation of line passing through these points = ?

Solution:

The point slope form of a line is

y = mx + c

Here we don't know the value of c

To find it

Putting y = 12 , x= -2 and y = -2 in the given equation

y = mx + c

Putting values it becomes

12 = (-2)*(-2) + c

12 = 4 + c

Subtracting 4 from both sides

12-4 = 4 -4 + c

8 = c

Now we have

m = -2 and c= 8

So equation of a line is given by

y = mx + c

Putting value of m and c

y = -2*x + 8

y=-2x + 8 which is the required equation


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2 years ago
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