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kow [346]
3 years ago
14

dino gets $5 for delivering the paper if you wants to buy a $20 book how many times does he need to deliver​

Mathematics
2 answers:
goldenfox [79]3 years ago
6 0
He needs to sell 4 times because 4 times 5 is 20
nika2105 [10]3 years ago
5 0

Answer: 4 times

Step-by-step explanation: If you divide 20 and 5 you get 4

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If the number of defects found is more than one standard deviation above the mean, the manufacturing facility needs to recalibra
Sliva [168]

Answer:

16% probability that the facility needs to recalibrate their machines.

Step-by-step explanation:

We have to use the Empirical Rule to solve this problem.

Empirical Rule:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

What is the probability that the facility needs to recalibrate their machines?

They will have to recalibrate if the number of defects is more than one standard deviation above the mean.

We know that by the Empirical Rule, 68% of the measures are within 1 standard deviation of the mean. The other 100-68 = 32% is more than 1 standard deviation from the mean. Since the normal distribution is symmetric, of those 32%, 16% are more than one standard deviation below the mean, and 16% are more than one standard deviation above the mean.

So there is a 16% probability that the facility needs to recalibrate their machines.

7 0
4 years ago
A town with a population of 600 is expected to grow at an annual rate of 5%. Write an equation and find the number of years it i
Ray Of Light [21]

Answer:

t = 8.31 years

Step-by-step explanation:

This is compound growth with a growth rate of 5%, initial count of 600 and final count of 900.

The appropriate equation is P  = Po (1 + 0.05)^t, where t represents the number of years required for the population to reach P:

900 = 600 (1.05)^t.  Let's solve this for t:

Dividing both sides by 600, we get 900/600 = 1.05^5, or

1.5 = 1.05^t.

To solve for t, take the log of both sides:

ln 1.5 = t*ln 1.05, or

t = (ln 1.5) / (ln 1.05)

This evaluates to t = 8.31 years.

7 0
3 years ago
What is the sum of 2 + 0.42 + 1.8?
Inessa [10]
The answer is a, you add the numbers up get 4.22 which is equivalent to 4 whole aka ones and since .22 is a decimal you use your tenths and hundredths
4 0
3 years ago
5 × 10/12 what is the product?
joja [24]

Answer:

Step-by-step explanation:

10 divided by 12= 0.83

0.83 times 5= 4.16 or  26/625

3 0
4 years ago
Please hurry!<br> its math thats it
Triss [41]

Answer:

See below

Step-by-step explanation:

Because 2*3=6, then 2^4 * 3^4 = 6^4 since (2*3)^4 = 6^4 -> 2^4 * 3*4 = 6^4

6 0
3 years ago
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