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Hoochie [10]
3 years ago
7

13/10 ÷ 2/10 = ?????​

Mathematics
2 answers:
andriy [413]3 years ago
5 0

Answer:

6.5

Step-by-step explanation:

13/10÷2/10= 13/10*10/2

cancel out the 10 and that leaves you with 13/1*1/2=13/2

simplify 13/2 and that leaves you with 6.5

OLga [1]3 years ago
3 0

Answer:

6\frac{1}{2}

Step-by-step explanation:

\frac{13}{10}  ·  \frac{10}{2} (Cross out the tens) = \frac{13}{2}

2/13 = 6 R.1     6\frac{1}{2}

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The correct answer is B
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3 years ago
A student raises her grade average from a 75 to a 90. what was the percent of increase in the student's grade average? round you
Leona [35]
Here are some formulas...
percent increase = (new number - original number) / original number...* 100
percent decrease = (original number - new number) / original number...* 100
============
a student raises her grade from a 75 to a 90....since it is going from a smaller number to a larger number, u have an increase
percent increase = (90 - 75) / 70....* 100
                           =   15/70   * 100
                           = 0.2142 * 100
                           = 21.42 rounds to 21.4%  increase
-------------------------
36.50 on sale for 32.12...since it goes from a larger number to a smaller number, u have a decrease
percent decrease = (original number - new number) / original * 100
                             = (36.50 - 32.12) / 32.12...* 100
                             = 4.38 / 32.12...* 100
                             = 0.1363...* 100
                             = 13.63 rounds to 13.6% decrease
------------------------------
23.5 to 21.2......this is a decrease
percent decrease = (original number - new number) / original...* 100
                            = (23.5 - 21.2) / 23.5....* 100
                            = 2.3 / 23.5....* 100
                            = 0.0979 * 100
                            = 9.79 rounds to 9.8% decrease






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3 years ago
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Step-by-step explanation:

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77julia77 [94]

Answer:

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Explanation:

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60/25 = 12/Y
cross multiply and divide

25 x 12 = 300 

300 / 60 = 5

Y = 5 boxes
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3 years ago
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