3 years ago

!!!PLEASE HELPP ME!!

Mathematics

2 answers:

Annette [7]3 years ago

6 0

Answer:

negative :)

Step-by-step explanation:

hope this helps

AlexFokin [52]3 years ago

3 0

Answer:

its c

Step-by-step explanation:

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Calcule a expressão 2. 7/5 - 1. 1/6

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If f(x) is 5x-4 and g(x) is 4x+1 then what is (f-g)(x)

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Answer:

Step-by-step explanation:

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4 years ago

Factor completely 3x^2+9x-3<br>3(x^2+3)<br>3(x^2+3-1)<br>3x(x^2+3x-1)<br>prime

Firdavs [7]

Answer:

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Factor completely

$3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)$

Step-by-step explanation:

$3x^2+9x-3=(3)(x^2)+(3)(3x)-(3)(1)\\\\=(3)(x^2+3x-1)\\\\\text{For}\ x^2+3x-1\ \text{use the quadratic formula}\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x^2+3x-1\to a=1,\ b=3,\ c=-1\\\\x=\dfrac{-3\pm\sqrt{3^2-4(1)(-1)}}{2(1)}=\dfrac{-3\pm\sqrt{9+4}}{2}=\dfrac{-3\pm\sqrt{13}}{2}=-\dfrac{3\pm\sqrt{13}}{2}\\\\3x^2+9x-3=3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)$

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3 years ago

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mote1985 [20]

Answer:

30 seconds

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First, write the prime factorizations.

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15 = 3 × 5

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LCM = 2 × 3 × 5

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They flash together at the same time every 30 seconds.

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4 years ago