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3 years ago

Which of the following is the complete factorization of 25a 2-100

Mathematics

1 answer:

Westkost [7]3 years ago

4 0

Answer:

25(a-2)(a+2)

Step-by-step explanation:

25a^2 -100

We can factor out 25

25(a^2 -4)

a^2 -4 is the difference of squares a^2-b^2= (a-b)(a+b)

where a =a and b=2

a^2 -4 = (a-2)(a+2)

25a^2 -100 = 25(a-2)(a+2)

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Complete the table below to classify the triangles as scalene or isosceles.

BartSMP [9]

Answer:

1) Isosceles

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3) Scalene

Step-by-step explanation:

The 1st choice is isosceles because 2 side lengths are equal.

The 2nd and 3rd choice are scalene because none of the sides equal the other sides.

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3 years ago

3x=5*9 you have to multiply the numbers

myrzilka [38]

Answer:

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4 years ago

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A rectangular garden has sides of 20 feet and 15 feet. Find the length of a path that

Vsevolod [243]

Answer:

25 feet

Step-by-step explanation:

Rectangle has a length (given as 20 feet) and a width (given as 15 feet).

Also, the diagonal is the length of the side from one corner to opposite corner. THis is what we need to find. According to Pythagorean THeorem:

Length^2 + Width^2 = Diagonal^2

We know:

Length = 20

Width = 15

Now, we find the diagonal:

$20^2+15^2=Diagonal^2\\625=Diagonal^2\\Diagonal=\sqrt{625}\\Diagonal=25$

Hence, the diagonal (length of path that extends from one corner to the opposite corner) has a length of 25 feet.

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4 years ago

The given diagram can be used to prove the Pythagorean theorem. Which expression represents the total area of the four triangles

julsineya [31]

It’s b that’s a better answer

7 0

3 years ago