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Elenna [48]
3 years ago
7

Solve the proportion: Round answer to nearest tenth, if necessary: r =_____

Mathematics
2 answers:
mart [117]3 years ago
3 0

Answer:

The value of r is 4

Step-by-step explanation:

\frac{r}{4}  =  \frac{60}{120}

In order to find the value of r, you need to get rid of denorminator. By multiplying 4 to both sides:

(r/4)×4 = (60/120)×4

r = (1/2)×4

= 2

Margarita [4]3 years ago
3 0

Answer:

r = 2

Step-by-step explanation:

Note that 60/120 reduces easily to 1/2.  Then we have:

r/4 = 1/2

Multiplying both sides by 4 removes the fractions, yielding r = 2

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Answer:

Step-by-step explanation:

Bringing like terms on one side

4x - x = 7 + 1/2

3x = 7.5

x = 7.5/3

x = 2.5

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3 years ago
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Step-by-step explanation:

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3 years ago
Allan borrows 1870 dollars from his uncle. Two years later, he borrows another 1240 dollars. If his uncle charges him 8 percent
Anna11 [10]
For t=0
<span>Allan borrows--------------------------- > 1870 dollars

for t=6 years
</span>F1 = P*(1 +(r/m))^n
i=r/m
n=m*t---------- >1*6=6
we have
P1=1870
r=8%
m=1
t=6 years
F1 = 1870*(1 +(0.08/1))^6------------------ >2967.45 dollars

for t=2
Allan borrows--------------------------- > 1240 dollars

for t=6 years
F2 = P2*(1 +(r/m))^n
i=r/m
n=m*t---------- >1*4=4
we have
P2=1240
r=8%
m=1
t=4 years------------> (6-2)=4 years
F2 = 1240*(1 +(0.08/1))^4------------------ >1687 dollars

F1+F2=2967.45+1687=4654.45 dollars
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3 0
3 years ago
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Kay [80]

Answer:

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Step-by-step explanation:

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40%×38=R15,2

15,2+40=55,2

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