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alukav5142 [94]
4 years ago
11

Choose the numbers that are irrational.

Mathematics
1 answer:
ddd [48]4 years ago
8 0
As the numbers are written, none of them are irrational because they are all terminating decimals:

3.624=\dfrac{3624}{1000}=\dfrac{453}{125}
0.6=\dfrac6{10}=\dfrac35
0.87=\dfrac{87}{100}
-5=-\dfrac51

Perhaps there is some missing notation in your question?
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Use the elimination method to solve the system of equations.
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6 0
3 years ago
What is the solution set for 12=2(3x - 7)^2 +4
svet-max [94.6K]
12=2(3x-7)^2+4 \ \ \ |-4 \\
8=2(3x-7)^2 \ \ \ |\div 2 \\
4=(3x-7)^2 \\
\sqrt{4}=\sqrt{(3x-7)^2} \\
2=|3x-7| \\
3x-7=2 \ \lor \ 3x-7=-2 \\
3x=2+7 \ \lor \ 3x=-2+7 \\
3x=9 \ \lor \ 3x=5 \\
x=\frac{9}{3} \ \lor \ x=\frac{5}{3} \\
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\boxed{x \in \{1 \frac{2}{3}, 3 \} }
3 0
3 years ago
Solve the system of linear equations by substitution
elena-s [515]
There is the equal values method, so you can do:

x-4 = 4x-10 (remove x from both sides)
-4 = 3x -10 (add ten to both sides)
6 = 3x  (devide by 3x)
2 = x

Check: (by plugging it into the equation)
y = 2-4 and y = 8-10
y = -2 and y = -2
that's matches so it is correct...
 YOUR ANSWER IS:
(2, -2)

I hoped I helped sort things out, and have a great day!
7 0
4 years ago
Read 2 more answers
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