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timofeeve [1]
3 years ago
12

Which expression is equivalent to 6p + 6p? A. 12p B. 36p C. 12 + 2p D. p6

Mathematics
1 answer:
sveticcg [70]3 years ago
6 0
Hello!

6p + 6p = 12p

The answer is A)12p

Hope this helps!
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A clock radio is on sale for 25% off it’s original retail price of $30. If the delivery charge for the radio is 10% if its purch
Alex17521 [72]

To buy the radio it would cost $22.5 I believe

To have it delivered it would cost $2.5 I believe

So overall that would cost $25

( I apologize if I'm wrong)

3 0
4 years ago
How do you find the area of this regular polygon​
Maksim231197 [3]

Answer:

By using the formula of the octagon:

10m=1000cm

A ≈ 4.83×10^6 cm²

5 0
3 years ago
SOMEONE PLZ HELP ME The two box-and-whisker plots below show the scores on a math exam for two classes. What 2 things do the int
Savatey [412]
A box-and-whisker plot shows 5 number summary:                                   Class A                Class B1) minimum value      65                           562) 1st quartile            66                            793) median                  81                            914) 3rd quartile            89                            945) maximum value     95                          100
Interquartile range = 3rd Quartile - 1st Quartile Class A: 89 - 66 = 23Class B: 94 - 79 = 15
IQR indicates the spread of the of the scores over the median. Class A has a spread that his more than 50% of the scores of Class B.
Hope this helps!!  :)
3 0
3 years ago
Suppose you want to eat lunch at a popular restaurant. The restaurant does not take reservations, so there is usually a waiting
grin007 [14]

Answer:

a) z_1 =\frac{20-19}{4} =0.25

z_2 =\frac{15-19}{4} =-1

And we can use the complement rule and we got:

P(z>0.25)=1-P(z

P(z>-1)=1-P(z

And replacing we got:

P(X >20| X>15)= \frac{0.401}{0.841}= 0.477

b) z_1 =\frac{20-19}{4} =0.25

z_2 =\frac{18-19}{4} =-0.25

And we can use the complement rule and we got:

P(z>0.25)=1-P(z

P(z>-0.25)=1-P(z

And replacing we got:

P(X >20| X>18)= \frac{0.401}{0.599}= 0.669

Step-by-step explanation:

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".  

Solution to the problem

Let X the random variable that represent the length of time waiting to be seated of a population, and for this case we know the distribution for X is given by:

X \sim N(19,4.0)  

Where \mu=19 and \sigma=4.0

Part a

For this cae we want to find this probability:

P(X >20| X>15)

And if we use the conditional probability formula we got:

P(X >20| X>15)= \frac{P(X >20 \cap X>15)}{P(X>15)}=\frac{P(X>20)}{P(X>15)}

We can solve the problem using the z score formula given by:

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

z_1 =\frac{20-19}{4} =0.25

z_2 =\frac{15-19}{4} =-1

And we can use the complement rule and we got:

P(z>0.25)=1-P(z

P(z>-1)=1-P(z

And replacing we got:

P(X >20| X>15)= \frac{0.401}{0.841}= 0.477

Part b

P(X >20| X>18)= \frac{P(X >20 \cap X>18)}{P(X>18)}=\frac{P(X>20)}{P(X>18)}

We can solve the problem using the z score formula given by:

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

z_1 =\frac{20-19}{4} =0.25

z_2 =\frac{18-19}{4} =-0.25

And we can use the complement rule and we got:

P(z>0.25)=1-P(z

P(z>-0.25)=1-P(z

And replacing we got:

P(X >20| X>18)= \frac{0.401}{0.599}= 0.669

5 0
4 years ago
Compare these fractions 8/56 1/7
dem82 [27]
1/7 = 8/56 they are equivalent
7 0
3 years ago
Read 2 more answers
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