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diamong [38]
4 years ago
11

Help with this math question

Mathematics
1 answer:
Ulleksa [173]4 years ago
6 0

Answer:

-\frac{13\sqrt{x} }{x}

Step-by-step explanation:

We have been given the following expression;

-13/√x

In order to rationalize the denominator, we multiply the numerator and the denominator by √x;

-\frac{13}{\sqrt{x}}=-\frac{13\sqrt{x} }{\sqrt{x}\sqrt{x}}\\ \\-\frac{13\sqrt{x} }{\sqrt{x^{2} } }\\\\-\frac{13\sqrt{x} }{x}

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5
taurus [48]

Answer:

6 feet

Step-by-step explanation:

Since there are 8 bricks and each brick is 9 inches long, that is a total of 72 inches. Now, you need to convert it from inches to feet. Since 1 foot is 12 inches, we need to divide 72 by 12 to get the number of feet. 72 / 12 is equal to 6.

6 0
3 years ago
Totatian regimes exised in all but which of the following counties's
Nuetrik [128]
What are the options
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4 years ago
If you know the measure of the vertex angle of an isosceles triangle, how do you find out the measure of the base angles?
Irina-Kira [14]

Answer:

Step-by-step explanation:

An isosceles triangle has 2 sides that are the same length.  Let's say that our triangle has the 2 sides measuring the same and the base is a different length.  The vertex angle is the top angle.  By the definition of an isosceles triangle, since the 2 sides measure the same length, then the angles across from those sides have the same degree measure.  If we know the measure of the vertex angle, then we have

180 = vertex angle - base angle - base angle

but since the base angles are the same and we have 2 of them, then

180 = vertex angle - 2 base angles

For example, if the vertex angle measures 80 degrees, then 180 - 80 = 100.  That 100 has to be split in half for each of the base angles which are the same as each other.  So the vertex angle is 80 and each base is 50.

6 0
3 years ago
tim has $45. he buys pens that cost 2.75 each until he has only 12.00 left. if x represents the number of pens purchased.. write
aliya0001 [1]

Solve this equation:  $45 - ($2.75/pen)x = $12.  Simplifying, we get

$33 = ($2.75)x, so that

x = $33 / ($2.75) = 12.

Tim's buying 12 pens leaves him with $12.

6 0
3 years ago
Read 2 more answers
Recess began at 11:12am. It ended at 11:44am. How long was recess?
Soloha48 [4]

Answer:

32 minutes

Step-by-step explanation:

44-12=32

8 0
3 years ago
Read 2 more answers
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