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Dimas [21]
3 years ago
9

Please helpASAP! Approximately 30% of the land on

Mathematics
1 answer:
timurjin [86]3 years ago
5 0

< 30% or <0.3

less than 30

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HELP if you can pls pls pls ty
Serhud [2]

Answer: I think its $176.40

Step-by-step explanation:

The area would be 21

Feet would be = 50.4 (21 x 2.4)

Then it would cost $176.40 (50.4 x $3.50)

I might be wrong, I'm not entirely sure.

4 0
3 years ago
Read 2 more answers
Dr. Tu must administer emergency medicine to his patient, Mrs. Jones. The
galben [10]

Answer:

168

Step-by-step explanation: You would do 140/100 = 1.4 then multiply 120 by 1.4 which is 168.

3 0
3 years ago
Three adults and four children must pay $94 for their tickets
Sliva [168]
13.42 dollars EACH if all the tickets cost the same
8 0
3 years ago
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of pain relief drug is norm
FrozenT [24]

Answer:

a) P(1

b) P(X

Step-by-step explanation:

1) 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".  

2) Part a

Let X the random variable that represent the duration of a safe dosage of pain relief drug, and for this case we know the distribution for X is given by:

X \sim N(1.5,0.8)  

Where \mu=1.5 and \sigma=0.8

We are interested on this probability

P(1

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(1

And we can find this probability on this way:

P(-0.625

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-0.625

3) Part b

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability on this way:

P(z

6 0
3 years ago
Hi I have been working on this for hours and I still can't figure out what 23x3 is I would really be thankful if you can help me
maksim [4K]

Answer:

The answer would be 69 lol

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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