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3 years ago

determine by graphing f(x)= x^4-16x^3 + 94x^2-240x+225. g(x)= 1\x-4 - 1 Determine where f(x)=g(x) by graphing

Mathematics

1 answer:

gregori [183]3 years ago

7 0

Answer:

5889,08

Step-by-step explanation:

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The weight of a package of mints is believed to be normally distributed with mean 21.37 grams and standard deviation 0.4, i.e. X

nasty-shy [4]

Answer:

$P(21$

And using a calculator, excel or the normal standard table we have that:

$P(-1.85$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

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

$X \sim N(21.37,0.4)$

Where $\mu=21.37$ and $\sigma=0.4$

Since the distribution for X is normal then we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

We can find the probability required with the following z score formula:

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

And replacing we got:

$P(21$

And using a calculator, excel or the normal standard table we have that:

$P(-1.85$

6 0

2 years ago

7. 4 = 8X + 5Y _____________________________

Strike441 [17]

As the equation does not consists like terms we can only get x , y equations.

Step-by-step explanation:

Firstly, they are not like terms.

If the value to be is found is X then,

8x+5y=4

Now subtract 5y on both sides

8x+5y-5y=4-5y

here both positive 5y and negative 5y get cancelled

Now divide by 8

x=(4-5y)/8

If we need y value then,

subtracting both sides by 8x

5y=4-8x

Now dividing with 5 on both sides

y=(4-8x)/5 =>y=4/5 -8x/5

According to Y=mx+c

slope = m = 4/5

y-intercept = -8x/5.

8 0

2 years ago

Please help, I have redone this problem a million times and i cant get it right. Time sensitive!!

Advocard [28]

Answer:

Step-by-step explanation:

This should be easy one unless you're making silly mistake like forgetting to take reciprocal of $\frac{3}{2x}$

lets do it:

$\frac{x+2}{x-1}$ ÷ $\frac{3}{2x}$ first: we take the reciprocal of 3/2x now its

$\frac{x+2}{x-1}$ * $\frac{2x}{3}$ now just multiply top and bottom by using distributive method

$\frac{2x^2 +4x}{3x-3}$ this is your answer.

3 0

2 years ago

Find four consecutive even integers such that if the sum of the first and the third is multiplied by 5 the result is 12 less tha

Fofino [41]

4 consecutive even integers....x, x + 2, x + 4, x + 6

5(x + x + 4) = 9(x + 6) - 12
5(2x + 4) = 9x + 54 - 12
10x + 20 = 9x + 42
10x - 9x = 42 - 20
x = 22

x + 2 = 22 + 2 = 24
x + 4 = 22 + 4 = 26
x + 6 = 22 + 6 = 28

so ur numbers are : 22,24,26, and 28

6 0

2 years ago

izzy orders gloves for the 36 players on the teams combined. Izzy estimates that 10% of the players are left handed so he orders

Alja [10]

Answer:

It will not be enough as it should have been 4 left handed gloves.

Step-by-step explanation:

Izzy estimates 10% of the players are left handed so he orders 3 left handed gloves will not be enough because of the following:

10% of 36 is 3.6

36 * 10 / 100 = 3.6

Therefore taking the estimation 3.6 is equal 4

5 0

3 years ago