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GuDViN [60]
3 years ago
15

Unit rate word problem,Bridget read a total of 48 books over 12 months.If Bridget has 68 books so far,how many month has she bee

n with her book club
Mathematics
1 answer:
SOVA2 [1]3 years ago
7 0
The correct answer is 17
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Yes I believe so

Step-by-step explanation:

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What is 2/3 divided by 4/5​
Pani-rosa [81]
That is 0.53 , 53/100
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7n-4=31 I need help to solve n
vfiekz [6]
7n-4=31
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malfutka [58]

The answer is 87.12

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3x+9y=75<br>8x+5y=67 <br>what is x and y?
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There are many ways to solve simultaneous linear equations. One of my favorite for finding integer solutions is graphing. The attached graph shows the solution to be ...

... (x, y) = (4, 7)

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You can also use Cramer's Rule, or the Vedic math variation of it, which tells you the solution to

ax+by=c\\dx+ey=f

is given by

x=\dfrac{bf-ec}{\Delta}\\\\y=\dfrac{cd-fa}{\Delta}\qquad\text{where $\Delta=bd-ea$}

Here, that means

... x = (9·67-5·75)/(9·8-5·3) = 228/57 = 4

... y = (75·8-67·3)/57 = 399/57 = 7

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A (graphing) calculator greatly facilitates either of these approaches.

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