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mr_godi [17]
3 years ago
11

(a + 3)(a - 2) I need help answering this but don't know the answer. Can someone please help?

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
3 0

(a+3)(a-2)

(a² -2a +3a - 6) =0

(a² + a - 6 ) = 0

Use splitting the middle term

a² + 3a - 2a - 6 = 0

a(a+3) - 2(a+3) = 0

(a-2)(a+3) = 0

Values of a are

a - 2 = 0

a = 2 .....(i)

a+3 = 0

a = -3 .....(ii)

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Solve the triangle. Round your answers to the nearest tenth.
sweet-ann [11.9K]

Answer:

  B.  m∠B = 118°, a = 17, c = 18

Step-by-step explanation:

The answer choices all agree on the values of ∠B and c, so we only need to compute the value of side a.

We can verify angle B is ...

  ∠B = 180° -30° -32° = 118°

By the law of sines, ...

  a/sin(A) = b/sin(B)

Multiplying by sin(A), we get ...

  a = b·sin(A)/sin(B) = 30·sin(30°)/sin(118°) ≈ 16.98855

  a ≈ 17.0 . . . units . . . . . matches choice B

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If you like, you can also verify side c:

  c = b·sin(C)/sin(B) = 30·sin(32°)/sin(118°) ≈ 18.00512

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5 0
2 years ago
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3 0
3 years ago
A person who is 5 feet tall is standing 88 feet from the base of a​ tree, and the tree casts a 96 foot shadow. the​ person's sha
pashok25 [27]
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Combine like terms - y + 9z - 16y - 25z + 4
alexandr402 [8]

- 17y - 16z + 4

Step-by-step explanation:

1) Collect like terms.

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2) Simplify.

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So, therefor, the answer is -17y - 16z + 4.

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Ray Of Light [21]

Answer :

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to find the area of the rectangle = (5x + 12) * 5x

therefore,

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= 25x * 60x

Now we have to find the sum of both the areas,

so, 36 + 1500 = 1536

Step-by-step explanation:

look I know my answer is wrong but I just wanted points! thnx for the free points! :)))))))))

NANRI! VANAKKAM!

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