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3 years ago

What is the square root of -625

Mathematics

2 answers:

loris [4]3 years ago

6 0

Answer:

25i

Step-by-step explanation:

Your calculator or your knowledge of powers of 5 will tell you that √625 is 25. The minus sign makes the root imaginary.

$\sqrt{-625}=\sqrt{(-1)(25^2)}=25\sqrt{-1}=25i$

OLga [1]3 years ago

5 0

Answer:

Step-by-step explanation:

you welcome

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3 years ago

Use the substitution method to solve the system of equations. Choose the correct ordered pair. x + y = 11 -x = -y - 9

suter [353]

$x+y=11 \\
-x=-y-9 \\ \\
\hbox{substitute the second equation by -1} \\ \\
x+y=11 \\
x=y+9 \\ \\
\hbox{substitute y+9 for x in the first equation} \\ \\
y+9+y=11 \\
2y=11-9 \\
2y=2 \\
y=\frac{2}{2} \\
y=1 \\ \\
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The answer is B.

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3 years ago

Read 2 more answers

Math <br><br><br> help pls!!<br><br> solve for x and y

Elan Coil [88]

Answer:

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Step-by-step explanation:

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8 0

3 years ago

The solution set for the inequality x + 4 ≤ 1/2 (x - 3) includes -11 as an element.

Sindrei [870]

Answer:

<h2>x ≤ -11, Yes. The solution set include -11.</h2>

Step-by-step explanation:

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3 years ago