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matrenka [14]
3 years ago
8

How many solutions exist for 2|x − 1| = 8?

Mathematics
1 answer:
lora16 [44]3 years ago
4 0
Two solutions exist,
2(x - 1) = 8
2x - 2 = 8
2x = 10
x = 5
&
2(x + 1) = 8
2x + 2 = 8
2x = 6
x = 3

the two solutions are 5 and 3
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Step-by-step explanation:

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2 years ago
Pratap puri Row 22 miles down a river in two hours but the return trip took him 5 1/2 hours find the rate pratap Control in Stil
Natalija [7]

Answer:

x= 7.5 mile/h

y= 3.5 miles / h

Step-by-step explanation:

Given x and y

so, x+y = speed down river

and x-y= speed up river

using

travel time = distance / speed for each case;

we get;

22/x+y=2  ---(1)

and

22/x-y=5.5 -----(2)

Solving equations simultaneously

eq 1 gives

2x+2y=22  ---(3)

eq 2 gives

5.5x-5.5y=22 ----(4)

Multiply eq 3 by 2.75

==> 5.5x+5.5y=60.5 --- (5)

adding eq 4 with eq 5

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put this value in eq 3

==> 2(7.5)+2y=22

==> 2y=22-19.8

==> 2y=7

==> y = 3.5

4 0
3 years ago
Guys hi am i correct ??
Sloan [31]
Yes, you are correct.

Hope my answer helped u :)
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2 years ago
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Step-by-step explanation:

Hope this is correct

HAVE A GOOD DAY!

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