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3 years ago

The library has thirteen

Mathematics

1 answer:

dybincka [34]3 years ago

5 0

Answer:

If the shelves are 4/5 full, then the total number of books in the library is 1,040 books

Step-by-step explanation:

13 roll of bookcases

All the bookcases have four shelves

Total number of shelves = 4 x 13

= 52 shelves

Each shelve holds 25 books each

Total number of books that can be in the shelves altogether = 52 x 25

= 1,300 books

If the shelves are 4/5 full, then the total number of books in the library is,

4/5 x 1300

= 1,040 books

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NNADVOKAT [17]

Answer: $\frac{2x(5x + 1)}{4x - 1}$

Step-by-step explanation:

$\frac{4x^{3}-12x^{2}}{4x^{2}+7x - 2}$ ÷ $\frac{2x^{2}-6x}{5x^{2}+11x + 2}$

= $\frac{4x^{2}(x - 3)}{(4x - 1)(x + 2)}$ ÷ $\frac{2x(x - 3)}{(5x + 1)(x + 2)}$

= $\frac{4x^{2}(x - 3)}{(4x - 1)(x + 2)}$ x $\frac{(5x + 1)(x + 2)}{2x(x - 3)}$

= $\frac{2x(5x + 1)}{4x - 1}$

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3 years ago

Rita and Tina each make $11 an hour working as cashiers at a supermarket. Last week, Rita worked r hours while Tina worked t hou

Sonbull [250]

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3 years ago

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xxTIMURxx [149]

The solution to given system of equations is (x, y) = (2, -1)

Solution:

Given system of equations are:

-1x + 2y = -4 -------- eqn 1

4x + 3y = 5 ------- eqn 2

We can solve the above system of equations by elimination method

Multiply eqn 1 by 4

4(-1x + 2y = -4)

-4x + 8y = -16 ------ eqn 3

Add eqn 2 and eqn 3

4x + 3y = 5

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( + ) --------------------

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Check the answer:

Substitute x = 2 and y = -1 in eqn 2

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8 - 3 = 5

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Thus the obtained answer is correct

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3 years ago

Evaluate the expression when x = 8 and y = 1.

Rzqust [24]

The answer should be 4.

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Second, multiply. 4 x 1 = 4 so that is your answer.

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3 years ago

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sergeinik [125]

Answer:

Step-by-step explanation:

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3 years ago