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Diano4ka-milaya [45]
4 years ago
8

10-18 please give me answers

Mathematics
2 answers:
loris [4]4 years ago
6 0
To find the percent of a number, just convert the percent to a decimal and multiply the decimal by the number.

10.
6% = 0.06
0.06 • 90 = 5.4

11.
20% = 0.2
0.2 • 80 = 16

12.
27% = 0.27
0.27 • 120 = 32.4

13.
12% = 0.12
0.12 • 230 = 27.6

14.
75% = 0.75
0.75 • 240 = 180

15.
15% = 0.15
0.15 • 45 = 6.75

16.
3% = 0.03
0.03 • 12 = 0.36

17.
150% = 1.5
1.5 • 17 = 25.5

18.
7% = 0.07
0.07 • 300 = 21
kicyunya [14]4 years ago
5 0
10. 5.4 (90x0.06)
11. 16 (80x.20)
12. 32.4 (120x.27)
13. 27.6 (230x0.12)
14. 180 (240x.75)
15. 6.75 (45x.15)
16. .36 (12x0.03)
17. 25.5 (17x1.50)
18. 21 (300x0.07)
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Olivia and Ray walk to school. Olivia walks 1/4 of a mile to school. Her walk is 2/3 of the distance that Ray walks to school. W
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A student said that 3:4 is equivalent to 9:16 and 18:64. What did the students do wrong?
goldenfox [79]

Answer: The students did not do anything wrong, they were right

Step-by-step explanation:

3:4 is divisible by 9:16 and by 18:64

6 0
3 years ago
PLEASE HELP<br> Complete the table by computing the amount in the account at the end of each period.
skad [1K]

Answer:

See below

Step-by-step explanation:

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8 0
3 years ago
Can someone help me with this question? You don’t really have to tell me the answer but just how to solve it.
Veronika [31]

part A

if the paperbacks are 40% less, that means 100% - 40% = 60%, they actually are 60% of the price of the hardcover ones.

\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{60\% of 24.99}}{\left( \cfrac{60}{100} \right)249.99}\implies 14.994

part B

so, if they return it, they get 1/3 credit, if they try to sell it, is half off, which is more than 1/3.  22 got damaged.

\bf \stackrel{\textit{damaged books at half-price}}{(22\cdot 14.994)\cfrac{1}{2}\implies 164.934}~\hfill \stackrel{\textit{damaged books at one-third price}}{(22\cdot 14.994)\cfrac{1}{3}\implies 109.956} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill 164.934 - 109.956 = 54.978~\hfill

part C

\bf \textit{First Day}~\hfill \stackrel{hardcover}{3(24.99)}+\stackrel{paperback}{8(14.994)}+\stackrel{damaged}{3\left( 14.994\cdot \frac{1}{2} \right)} \implies 217.413 \\\\\\ \textit{Second Day}~\hfill \stackrel{hardcover}{4(24.99)}+\stackrel{paperback}{5(14.994)}+\stackrel{damaged}{8\left( 14.994\cdot \frac{1}{2} \right)}\implies 234.906 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \boxed{17.493}

I don't think she is incorrect, $17.5 is close to $20, she didn't say it was exactly $20, just thereabouts, and 17.5 is around that much.

8 0
3 years ago
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