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KengaRu [80]
3 years ago
14

A publishing company produces 15 books in 3 hours. How long would it take to produce 20 books at the same rate?

Mathematics
2 answers:
marissa [1.9K]3 years ago
8 0
The answer would be 15 hours
aliya0001 [1]3 years ago
6 0

Answer:

4 hours

Step-by-step explanation:

Since the company was able to produce 15 book in 3 hours, that mean they produce 5 book every hour. So adding 5 more books to 15 to get 20 means that you add one more hour. So it would be 4 hours! hope this helps!:)

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A line segment has endpoints (-2,-3) and (4,4). Find the length of the segment and find the midpoint.
uysha [10]
\bf ~~~~~~~~~~~~\textit{distance between 2 points}
\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
%  (a,b)
&&(~ -2 &,& -3~) 
%  (c,d)
&&(~ 4 &,& 4~)
\end{array}
\\\\\\
d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}
\\\\\\
d=\sqrt{[4-(-2)]^2+[4-(-3)]^2}\implies d=\sqrt{(4+2)^2+(4+3)^2}
\\\\\\
d=\sqrt{36+49}\implies \boxed{d=\sqrt{85}}\\\\
-------------------------------

\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
%  (a,b)
&&(~ -2 &,& -3~) 
%  (c,d)
&&(~ 4 &,& 4~)
\end{array}\qquad
%   coordinates of midpoint 
\left(\cfrac{ x_2 +  x_1}{2}\quad ,\quad \cfrac{ y_2 +  y_1}{2} \right)
\\\\\\
\left( \cfrac{4-2}{2}~~,~~\cfrac{4-3}{2} \right)\implies \left(\cfrac{2}{2}~~,~~\cfrac{1}{2}  \right)\implies \boxed{\left(1~,~\frac{1}{2}  \right)}
5 0
3 years ago
Use pemdas ( 12 - 3)^2 - ( 14/2)
Nonamiya [84]
<h2>74</h2>

Step-by-step explanation:

= ( 12 - 3)² - (14/2)

= 9² - 7

= 9×9 - 7

= 81 - 7

= 74

<h2>MARK ME BRAINLIST</h2>
6 0
3 years ago
Read 2 more answers
Which of the following sets are closed under multiplication? Select all that apply.
ivolga24 [154]

Answer:

Integers, whole numbers and polynomials are sets of closed under multiplication.

Only Irrational numbers are not the sets of closed under multiplication.                  

Step-by-step explanation:

To find : Which of the following sets are closed under multiplication?

1. Integers  

Yes, integers is a sets of closed under multiplication as if you multiply an integer by an integer, you will always get another  integer.

Example - 3\times 3=9 is an integer

2. Irrational numbers


No, irrationals are not closed under multiplication.

Example - \sqrt{3} \times \sqrt{3} =3 is a rational number

3. Whole numbers


Yes, whole numbers is a sets of closed under multiplication as if you multiply a whole number by a whole number, you will always get another  whole number.

Example - 5\times 5=25 is a whole number

4. Polynomials

Yes, polynomial is sets of closed under multiplication as if you multiply the variables' exponents are added, and the exponents in polynomials are whole numbers so the new exponents will be whole numbers.

Example - (x + 1)(x^2 + 4x + 3) = x^3 + 5x^2 + 7x + 3 is a polynomial.


4 0
3 years ago
Read 2 more answers
What is ten times greater than 563,626
denpristay [2]
Answer: 5,636,260. Just add a zero behind and it's done! :)
6 0
3 years ago
Read 2 more answers
10 The cost to rent the cabin is $125 per night, plus a $50
kykrilka [37]

Answer:

C=125n+50

Step-by-step explanation:

each night you stay represents "n" so if you stayed 3 nights(n)

you would multiple 125x3= 375

plus the $50 non refundable charge

7 0
2 years ago
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