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Harman [31]
3 years ago
11

Mary has borrowed 48 books from the library. This is 22% of all of the books in the library. How many books are in the library?

Mathematics
1 answer:
Ann [662]3 years ago
5 0

Answer:

218

Step-by-step explanation:  

ATQ,

22%of total books = 48

Let the total no. of books in library be x.

22/100x=48

x=4800/22

X=218(approximately)

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find the equation of straight line which passes through the point of intersection of straight lines.x+2y+3=0 and 3x+4y=7 and par
erastovalidia [21]

Answer:

Equation of the line in question: y = x - 21.

Step-by-step explanation:

Start by finding the intersection of the two straight lines. The equation for both lines shall hold at their intersection. (Using the idea of the Gaussian Elimination.)

\left\{\begin{aligned}&x + 2y =-3\\&3x + 4y=7\end{aligned}\right..

Add -3 times the first equation to the second:

\left\{\begin{aligned}&x + 2y =-3\\& -2y=16\end{aligned}\right..

Add the second equation -2y=16 to the first:

\left\{\begin{aligned}&x = 13\\&y=-8\end{aligned}\right..

Hence the intersection of the two lines will be (13, -8).

Now, find the slope of that straight line. y - x = 8 is equivalent to y = x +8. The slope of that line is equal to 1. So will be the slope of the line in question.

Apply the point-slope form of a line on a Cartesian plane:

  • Point: (13, -8),
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Equation of the line:

(y - (-8)) = (x - 13).

Simplify to obtain:

y = x -21.

7 0
4 years ago
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Hello, again!!

So, the range is the outcome when you plug in any x. In other words, the y.
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Step-by-step explanation:

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