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Mandarinka [93]
3 years ago
15

Double digit subtraction with regrouping

Mathematics
1 answer:
goblinko [34]3 years ago
8 0
Here is an example... ( look at the attachment bellow ) :

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An artificial lake is in the shape of a rectangle and has an area of 9/20 square mile. The width of the lake is 1/5 the length o
Zina [86]
X=width of the lake
y=length of the lake.
we set out this system of equiations
x*y=9/20
x=y/5
we solve by sustitution method
(y/5)*y=9/20
y²/5=9/20
y²=(5*9)/ 20
y²=2.25
y=√2.25=1.5

x=y/5
x=1.5/5=0.3

Solution:
width of the lake=0.3 miles
lenght of the lake=1.5 miles
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Answer:

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First we have to multiply 7 by 17 (7x17).

Then you have to divide it by 2.

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Vadim26 [7]

a is height p is perimeter

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3 years ago
Do u agree?I m not pretty sure
nika2105 [10]
It looks correct to me :)
6 0
2 years ago
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