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2 years ago

Find x in the image below

Mathematics

1 answer:

Zanzabum2 years ago

8 0

Check the picture below.

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Express square root -144 in its simplest terms.

Montano1993 [528]

Answer:

$\sqrt{144}$ = 12 or $\sqrt{-144}$ = 12i

Step-by-step explanation:

You can't take squareroot of a negative number. It's not allowed!

But for positive 144 if that's what you're asking, it will be 12.

Hope this helps!

3 0

3 years ago

Bus going at 30 mph for 7 hours

Sergeu [11.5K]

Well, not specific. But after 7 hour the bus will be 210mi away

3 0

4 years ago

Read 2 more answers

If u can explain please :)

zhannawk [14.2K]

Answer:

it would be c because 12+8 = 20 and 24 is closer to 20

7 0

3 years ago

Which of the following are solutions to the equation below?<br><br> x^2-2x-24-0

Dominik [7]

Answer:

x=-4

x=6

Step-by-step explanation:

Lets put to work the well known quadratic equation:

$x=\frac{-b+/- \sqrt{b^{2}-4ac } }{2a}$

Let us also, remember the given equation: x^2-2x-24=0

Where 'a' would be equals to 1, 'b' equals to -2 and c equals to -24.

The quadratic equations with those values is:

$\frac{2 +/- \sqrt{4+96} }{2}$

Where we obtain two values.

x1= -4

and x2= 6

4 0

3 years ago

For any nonnegative real number.

frutty [35]

Answer:

Step-by-step explanation:

We know that $\sqrt{b}=b^{1/2}$ .

We also know that $(a^b)^c=a^{bc}$ .

We can combine these facts to get $(\sqrt{b})^2=(b^{1/2})^2=b^{1/2*2}=b^{1}=b$ .

So, the answer is $\boxed{A}$ and we're done!

<em>Note: the non-negative part or the equation comes from the fact that you assume the square root of a negative number doesn't exist. You will change this assumption later in the year, or in further years.</em>

5 0

3 years ago