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Marrrta [24]
4 years ago
10

Solve the following exponential equations. 4^x + 7(2^x) + 12 = 0

Mathematics
1 answer:
andrey2020 [161]4 years ago
6 0

Answer:No value of x

Step-by-step explanation:

Given

4^x+7(2^x)+12=0

Let 2^x=y

y^2+7y+12=0

y^2+3y+4y+12=0

y(y+3)+4(y+3)=0

(y+3)(y+4)=0

y=-3,-4

2^x=-3

or 2^x=-4

so there is no value of x for which 2^x=-3 or -4

because minimum value of ^x=1

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Answer:

Step-by-step explanation:

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2 years ago
You roll two fair dice, one green and one red. (a) Are the outcomes on the dice independent? Yes No (b) Find P(1 on green die an
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Answer:

a

  Yes

b

 P(1 \& 5) = \frac{1}{36}

c

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d

 P(5 \& 1 | 1\& 5  ) = \frac{1}{18}

Step-by-step explanation:

From the question we are told that

     Two fair dice, one green and one red were rolled

Generally the  outcomes on the dice independent because the outcome on the first dice is not affected by the second die

Generally the  probability of getting a 1  on a dice rolled is  P(1) =  \frac{1}{6}

the  probability of getting a 5 on a dice rolled is  P(5) =  \frac{1}{6}

Generally the probability of P(1 on green die and 5 on red die) is mathematically represented as

         P(1 \& 5) = \frac{1}{6}  *\frac{1}{6}

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Generally the probability of P(5 on green die and 1 on red die) is mathematically represented as

          P(5 \& 1) = \frac{1}{6}  *\frac{1}{6}

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Generally the probability of P((1 on green die and 5 on red die) or (5 on green die and 1 on red die)) is mathematically represented as

          P(5 \& 1 | 1\& 5  ) = \frac{1}{36} + \frac{1}{36}

         P(5 \& 1 | 1\& 5  ) = \frac{1}{18}

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3 years ago
the number of people and dogs taking an obedience class increased from 1400 students to 1600 students. choose the percent increa
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Answer:

There're three answers.

14.285714285714285 - EXACT

14.28 - SIMPLIFIED

14 - ROUNDED/ESTIMATED

Step-by-step explanation:

Brainliest answer, please?

(You, the questioner, have to give it. It's not something brainly.com gives.)

1600 - 1400/1400 * 100 - EQUATION

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Step-by-step explanation:


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