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alukav5142 [94]
3 years ago
13

Multiply (3a + 5)2A9a2 + 30a + 25B 25a2 + 15a + 9C a2 + 3a + 25D 5a2 + 15a + 9​

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
4 0

Answer:

9 a^2 + 30 a + 25 the anwser is A

Step-by-step explanation:

Expand the following:

(3 a + 5)^2

(3 a + 5) (3 a + 5) = (3 a) (3 a) + (3 a) (5) + (5) (3 a) + (5) (5) = 9 a^2 + 15 a + 15 a + 25 = 9 a^2 + 30 a + 25:

Answer: 9 a^2 + 30 a + 25

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White raven [17]

Answer:

  15π/2 ft

Step-by-step explanation:

Arc length is given by the formula ...

  s = rθ . . . . . r = radius; θ = central angle in radians

A 135° arc has a radian measure of (135)(π/180) = 3π/4. The radius of a circle with a 20 ft diameter is (20 ft/2) = 10 ft. So, the arc length is ...

  s = (10 ft)(3π/4) = 30π/4 ft = 15π/2 ft

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Step-by-step explanation:

3 0
3 years ago
Need help asap with A &amp; B
const2013 [10]
These are the answers for you:

a: 36/100= 9/25


3 0
3 years ago
△ABC is similar to △LMN by the ​ AA Similarity Postulate ​ . The measure of ∠A is 57º and m∠C=2(m∠M).What is m∠M?
Levart [38]
This is the correct answer for this question: The angle of M is 41. Hope this helps answer your question.

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57 + 3x = 180
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So, the angle of M is 41
7 0
3 years ago
Hey! This is due at like 11 pm!
rewona [7]

Answer:

7

Step-by-step explanation:

Use the Pythagorean Theorem

a^2 + b^2 = c^2

a and b are either opposite or adjacent

c is the hypotenuse.

1. Look for the right angle. (the little box). The right angle "points" to the hypotenuse. In this case, the hypotenuse is 25.

2. Because we know the hypotenuse is 25. We know that 24 is our adjacent. Meaning our missing side is the opposite.

3. Plug in the numbers. 24^2 + b^2 = 25^2

4. Solve:

24^2 + b^2 = 25^2

576 +b^2=625

b^2 = 625-576

b^2 = 49

\sqrt{b^2} = \sqrt{49}

b = 7

Hope this helps! Lmk if you have questions.

7 0
2 years ago
Read 2 more answers
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