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mafiozo [28]
3 years ago
14

There are 11 books on a shelf, 8 of these books are new. What is the ratio of new books to new books? and What is the ratio of a

ll books to used books?​
Mathematics
1 answer:
trasher [3.6K]3 years ago
7 0

Answer:

3:8 ratio from used to new books.  11:3 is the ratio from all bokes to used books.

Step-by-step explanation:

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malfutka [58]

Answer:27 divided by 3 to get 9 or add 3 repetitively to get 27 or 3x=27

Step-by-step explanation:

7 0
3 years ago
HELP PLEASE THIS IS DUE TODAY
nikklg [1K]

Answer:

112 approximately

Step-by-step explanation:

3 0
3 years ago
a motorboat travels 305km in 5 hours going upstream and 651km in 7 hours going downstream. What is the rate of the boat in still
Ghella [55]
Recall your d = rt, distance = rate * time.

b = speed rate of the boat.

c = speed rate of the current.


keeping in mind that, as the boat goes Upstream, against the current, it's speed is not "b", but is really " b - c ", because the current is subtracting speed from it.

likewise, when the boat is going Downstream, because is going with the current, is really going faster at " b + c ".

\bf \begin{array}{lccclll}
&\stackrel{km}{distance}&\stackrel{kmh}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
Upstream&305&b-c&5\\
Downstream&651&b+c&7
\end{array}
\\\\\\
\begin{cases}
305=(b-c)(5)\implies 61=b-c\implies 61+c=\boxed{b}\\
651=(b+c)(7)\implies 93=b+c\\
----------------------\\
93=\boxed{61+c}+c
\end{cases}
\\\\\\
93=61+2c\implies 32=2c\implies \cfrac{32}{2}=c\implies 16=c

what is the speed of the boat?  well, 61 + c = b.
6 0
3 years ago
What is a disadvantage of overpaying your taxes during the year?
Otrada [13]
The disadvantage of overpaying your taxes during the year is that you cannot use the money or draw interest on it until after you get your tax refund.

If you are overpaying your taxes, the government is holding that extra money for you. At the end of the tax year when you file your taxes, they will give you the extra money back that you overpaid.

However, you don't receive any interest on the extra money that was held.
5 0
3 years ago
Having trouble with this, help please? <br><br> I will give brainliest.
yaroslaw [1]

Answer:

a)     7x-15=20

b)   \frac{20+15}{7}

c)  5

Step-by-step explanation:

4 0
2 years ago
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