2 years ago

. If CD = 4 and the perimeter of △ABC is 23, what is the perimeter of △ABE?

Mathematics

1 answer:

OlgaM077 [116]2 years ago

6 0

Answer:

Step-by-step explanation:

ABC has a perimeter of 23, so

AB + BC + AC = 23

The perimeter of ABE would be the sum of these sides:

AB + BC + CD + DE + AE

We also know:

AE = AC, CD=4 and DE=4 because ACD is congruent to AED

So, AB + BC + CD + DE + AE = AB + BC + 4 + 4+ AC = 23+8 = 31

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3 years ago

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lana66690 [7]

Answer:

(22, 23)

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3 years ago

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MA_775_DIABLO [31]

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3 years ago

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tatuchka [14]

Answer:

Step-by-step explanation:

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Bringing like terms on one side

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2 years ago

Factor completely. 5x2 - 45 A. 5(x + 3)(x - 3) B. 5(x2 - 45) C. 5(x - 9)(x + 9) D. (5x + 9)(x - 5)

zimovet [89]

Answer:

The correct answer is A. 5(x + 3)(x - 3)

Step-by-step explanation:

In order to solve this, we start by pulling out the greatest common factor.

5x^2 - 45

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Now we can use the difference of two squares to factor the rest of the equation.

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4 0

3 years ago

Read 2 more answers