3 years ago

HELP ME WORTH 100 POINTS PLS (AND ACTUALLY ANSWER THE QUESTIONS)

Mathematics

1 answer:

yawa3891 [41]3 years ago

7 0

Answer:

A.dollors

correcte if I wrong

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Factor the polynomial function over the complex numbers. f(x)=x^3-2x^2+3x-6

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$f(x)=x^3-2x^2+3x-6=x^2(x-2)+3(x-2)=(x-2)(x^2+3)\\\\i=\sqrt{-1}\to i^2=-1\\\\x^2+3=x^2-(-3)=x^2-3i^2=x^2-(\sqrt3)^2i^2)=x^2-(i\sqrt3)^2\\\\\text{use}\ a^2-b^2=(a-b)(a+b)\\\\\boxed{f(x)=(x-2)(x-i\sqrt3)(x+i\sqrt3)}$

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3 years ago

A theater has 49 seats in the first row 52 seats in the second row 55 seats in the third row how many seats are in the 16th row

devlian [24]

Answer:

94 seats

Step-by-step explanation:

We solve using Arithmetic sequence formula

an = a + (n + 1)d

Where

a = First term = 49

d = Common difference = 52 - 49 or 55 - 52 = 3

n = 16th row

Hence,

a16 = 49 + (16 - 1)3

a16 = 49 + (15 × 3)

a16 = 49 + 45

a16 = 94

Therefore, the number of seats on the 16th row is 94 seats

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3 years ago

Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the l

Lemur [1.5K]

Answer:

5 ft 8 in or 68 in

Step-by-step explanation:

<u>In 4 seconds the rock will be at:</u>

2*4 = 8 in from the surface

<u>Add 5 feet to this to get the required distance:</u>

5 ft + 8 in = 5*12 in + 8 in = 68 in

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3 years ago

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Please answer ASAP! An explanation is a MUST requirement in order to receive points and the Brainliest answer. Thank you.

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3 years ago

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Solve 5x+3y=6 -2x+4y=8 using linear combinations

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Answer:

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Step-by-step explanation:

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