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3 years ago

Factor completely x^2 − 10x + 25.

Mathematics

2 answers:

Olenka [21]3 years ago

8 0

The answer is a.
x^2 -10x+25 = x*x-2*5*x+5*5 => (x-5)(x-5)

ivanzaharov [21]3 years ago

5 0

We're looking for two numbers that when multiplied, give 25, and when added, give -10.

Factoring 25 leads to 5*5 or -5*-5. The second alternative also fits -5+-5 = -10.

So (x-5)(x-5) is the factorization.

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A circle has a diameter with endpoints at (10,8) and (5,-4) what is the circumference of the circle

mel-nik [20]

<u>Answer:</u>

The circumference of circle is 40.82 units.

<u>Explanation:</u>

The end points of diameter lie on circle. since the coordinates of end points of diameter may be evaluated using

d= $\sqrt{(10-5)^ 2-(8-(-4))^ 2}$

= $\sqrt{25+144}$

= $\sqrt{169}=13$

therefore d = 13 .

The formulae of circumference comprises the length of radius of circle, hence find the radius as half of diameter length r=d/2 = 13/2 = 6.5 ; circumference of circle = $2\pi r$

= 2x3.14xr

= 13x3.14 units.

=40.82 units

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3 years ago

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VARVARA [1.3K]

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4 years ago

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lana66690 [7]

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Second, the rule is different for each row.

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3 years ago

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konstantin123 [22]

Answer:

Step-by-step explanation:

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