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Andrew [12]
3 years ago
8

Three times as much as one hundred thirty plus twenty

Mathematics
2 answers:
Gennadij [26K]3 years ago
7 0

Answer: 450

Step-by-step explanation:

130 plus 20 is 150. 150 times 3 is 450.

oee [108]3 years ago
4 0
This equals 410. You must first multiply and then add
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Theoretical probability is the probability that an event occurs when all of the outcomes of the experiment are equally likely.
MA_775_DIABLO [31]

1. The probability that we select a red marble is 1/3.

We found this out by taking the amount of red marbles there are and the total amount of marbles. The total amount of marbles is 18 and there are red marbles. So, it would become 6 out of 18 or 6/18. Then, we simplify 6/18 to the simplest form. The greatest common factor of both of those numbers is 6. Lastly, we divide each of them by 6 to get the simplest form.

6/18 = (6/6)/(18/6)

(6/6)/(18/6) = 1/3

So, therefore, the theoretical probability of picking a red marble is 1/3.

2. The probability that we select a blue marble is 2/3.

We can find this out by taking the amount of blue marbles there are and the total amount of marbles. We know that the total amount of marble is 18 and there are 12 blue marbles. So, we simply get the GCF (greatest common factor) and divide them by it.

Greatest Common Factor of 12 and 18 = 6

12/18 = (12/6)/(18/6)

(12/6)/(18/6) = 2/3

Thus, the theoretical probability of picking a blue marble is 2/3.

4 0
3 years ago
jack predicted his car payment to be ​$300 each month. His actual car payment is ​$275 each month.what % was his prediction off
r-ruslan [8.4K]

Answer:

.91% he wa off by .91% because .91 of 300 is 25 and 300- 25 is 275

Step-by-step explanation:

4 0
2 years ago
You recorded the actual expenses you incurred for a previous month in the above table. Determine your monthly budget based on th
Mademuasel [1]

Answer:

d.

$1,245.32

Step-by-step explanation:

4 0
3 years ago
What value of z makes the equation true?<br> 5/6=z/12<br> A. 6<br> B. 10<br> C. 15<br> D. 5
vazorg [7]
It would be 10 bc u times both by two
6 0
3 years ago
Read 2 more answers
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
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