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kakasveta [241]

3 years ago

11

Which two issues have increased the need for alternatives to fossil fuels?

1 answer:

kirill115 [55]3 years ago

8 0

Answer:

1. Global warming / carbon emission

2. Limited availability of the Earth resources

Step-by-step explanation:

1. Global warming is the ongoing rise of the average temperature of the Earth's climate system and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming. It is a major aspect of climate change which, in addition to rising global surface temperatures, also includes its effects, such as changes in precipitation. The global warming is as a result of carbon emissions caused largely by fossil fuel

2. Limited availability of earths resources as warranted the need to source for alternative means of energy

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The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.917 g and a standard deviation

Nutka1998 [239]

Answer:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

Step-by-step explanation:

Let X the random variable that represent the amounts of nocatine of a population, and for this case we know the distribution for X is given by:

$X \sim N(0.917,0.303)$

Where $\mu=0.917$ and $\sigma=0.303$

We have the following info from a sample of n =37:

$\bar X= 0.872$ the sample mean

And we want to find the following probability:

$P(\bar X \leq 0.872)$

And we can use the z score formula given by;

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for the value of 0.872 we got:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

6 0

3 years ago

!!!!!!!!50 POINTS. PLEASE HELP ASAP!!!!!!!

WARRIOR [948]

Answer:

x^6 + 2x^3 -2x^2 -8x + 4

Step-by-step explanation:

Okay, so we need to multiply f and g.

Since you said asap, I won't do the long explanation...

x3 -4x 2

x2 x6 -4x2 2x2

2 2x3 -8x 4

x^6 + 2x^3 -2x^2 -8x + 4

3 0

3 years ago

What is the slope of (-4,3) and (-3,1)

xxTIMURxx [149]

-.5 or negative 1/-2
same thing just in a dec and frac

8 0

2 years ago

Read 2 more answers

How do you solve for: 6 + 4/5b = 9/10b?

Gala2k [10]

Answer:

b=60

Step-by-step explanation:

6+4/5b=9/10b

-4/5b -4/5b

6=1/10b

divide both sides by 1/10

b=60

5 0

2 years ago

Read 2 more answers

a carpet is laid on a rectangular floor which measures 4meters by 5meters. if the carpet covers 60% of the floor find the area o

Yuri [45]

Answer:

12 m²

Step-by-step explanation:

Area of the floor:

area = length * width

area = 4 m * 5 m

area = 20 m²

area of carpet = 60% of area of the floor

area of carpet = 0.6 * 20 m²

area of carpet = 12 m²

3 0

2 years ago