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Harman [31]
3 years ago
13

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
7 0
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

3 0
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.

So, replacing the mean of the sample by 49, the standard deviation of the sample by 17.38, n by 10 and t_{\alpha /2} by 2.2621 we get:

49-2.2621\frac{17.38}{\sqrt{10} } \leq x'\leq 49+2.2621\frac{17.38}{\sqrt{10} }\\49-12.4326\leq x'\leq 49+12.4326\\36.5674\leq x'\leq61.4326

Finally, the interval values that she get is:

36.5674\leq x'\leq61.4326

8 0
3 years ago
The width of a circular track is 2 meters. If the radius of the outer circle is 6 meters, find the area of the track.​
Vilka [71]

Answer:

62.8 \:  {m}^{2}

Step-by-step explanation:

Radius of outer circle = 6 m

Width of the track = 2 m

So, radius of inner circle = 6 - 2 = 4 m

Area of the track = Area of outer circle - Area of inner circle

= \pi {6}^{2}  - \pi {4}^{2}  \\  \\  = \pi( {6}^{2}  -  {4}^{2} ) \\  \\  = 3.14 \times (36 - 16) \\  \\  = 3.14 \times 20 \\  \\  = 62.8 \:  {m}^{2}

4 0
3 years ago
The sum of a number and six is multiplied by negative four. The result is eight. What is the number? 4 -8 -4 -1/2
Ronch [10]
Hope this helps you.

8 0
3 years ago
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