Why is the world so bad

Mathematics

2 answers:

Paraphin [41]3 years ago

4 0

Answer:

cOrOnAvIrUs

Step-by-step explanation:

Ksju [112]3 years ago

3 0

Answer:

because humans are being evil to mother nature

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There is a bag with only red marbles and blue marbles.

Rufina [12.5K]

Hello I hope I can help you with this!!

EXPLANATION:
first we work out what all the marbles equal which is 9/9=63

Then we work out what 1/9 of the marbles are! Which is 1/9= 7 marbles!!

Then we work out what 5/9 of them are! Which is 5/9= 35 marbles

Then now we work out 4/9 which is our RED marbles! We do 4 times 7 which equals 28 red marbles!!

if you want to check to add the two numbers and they equal 63!

ANSWER= 28 red marbles

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3 years ago

Z/-2.5-011.5=-1.34 what is z

ololo11 [35]

Answer:

z=-25.4

Step-by-step explanation:

Add 11.5 to both sides of the equation, then simplify. Multiply all terms by the same value to eliminate fraction denominators

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3 years ago

The marketing director of a large department store wants to estimate the average number of customers who enter the store every f

Dahasolnce [82]

Answer:

$36.5674\leq x'\leq61.4326$

Step-by-step explanation:

If we assume that the number of arrivals is normally distributed and we don't know the population standard deviation, we can calculated a 95% confidence interval to estimate the mean value as:

$x-t_{\alpha /2}\frac{s}{\sqrt{n} } \leq x'\leq x-t_{\alpha /2}\frac{s}{\sqrt{n} }$

where x' is the population mean value, x is the sample mean value, s is the sample standard deviation, n is the size of the sample, $\alpha$ is equal to 0.05 (it is calculated as: 1 - 0.95) and $t_{\alpha /2}$ is the t value with n-1 degrees of freedom that let a probability of $\alpha/2$ on the right tail.