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ikadub [295]
3 years ago
6

tina's family buys 4 cheeseburges and three order of fries for $7.25. Louise's family buys 6 cheeseburgers and 3 orders of fries

for $9.75. What is the total cost of one cheeseburger and one order of fries.
Mathematics
1 answer:
nexus9112 [7]3 years ago
4 0
It is 1.25 for 1 hamburger and .75 for fries. Sorry if it’s wrong but hope I helped!!
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The lifespans of meerkats in a particular zoo are normally distributed. The average meerkat lives 13.1 years; the
Marat540 [252]

Answer:

P(x

We can calculate the z score given by:

z =\frac{x-\mu}{\sigma}= \frac{14.6-13.1}{1.5}= 1

So for this case 14.6 is a value 1 deviation above the mean

We know that within 1 deviation from the mean we have 68% of the data, and on the tails we will have 100-68 = 32% and 16% on each tail, so then we can conclude that:

P(X

Step-by-step explanation:

The empirical rule, also known as three-sigma rule or 68-95-99.7 rule, "is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ)".

Let X the random variable who represent the lifespans of meerkats.

From the problem we have the mean and the standard deviation for the random variable X. E(X)=13.1, Sd(X)=1.5

So we can assume \mu=13.1 , \sigma=1.5

On this case in order to check if the random variable X follows a normal distribution we can use the empirical rule that states the following:

• The probability of obtain values within one deviation from the mean is 0.68

• The probability of obtain values within two deviation's from the mean is 0.95

• The probability of obtain values within three deviation's from the mean is 0.997

And we want the following probability:

P(x

We can calculate the z score given by:

z =\frac{x-\mu}{\sigma}= \frac{14.6-13.1}{1.5}= 1

So for this case 14.6 is a value 1 deviation above the mean

We know that within 1 deviation from the mean we have 68% of the data, and on the tails we will have 100-68 = 32% and 16% on each tail, so then we can conclude that:

P(X

3 0
3 years ago
Read 2 more answers
Plz help with number 3 if number 2 is wrong plz tell thx!
Olenka [21]
Number 2 is correct. For number 3, the mean is 9 and the mean absolute deviation is 1.33.
5 0
3 years ago
Read 2 more answers
What is the value of 3 in 63.856
bonufazy [111]
Ones 1 this is all to it
6 0
3 years ago
Read 2 more answers
Factor the sum of terms as a product of the gcf and sum. 60 + 72
liraira [26]
60+72=(12x5) +(12x6)=12(5+6)

          60=12x5
          72=12x6
4 0
2 years ago
(5x+2y=23<br> (13x+3y=51
AysviL [449]

Answer:

[3, 4]

Step-by-step explanation:

{5x + 2y = 23

{13x + 3y = 51

−5⁄13[13x + 3y = 51]

{5x + 2y = 23

{−5x - 1 2⁄13y = 19 8⁄13 >> New Equation

______________________

11⁄13y = 3 5⁄13

_____ ______

11⁄13 11⁄13

y = 4 [Plug this back into both equations above to get the x-coordinate of 3]; 3 = x

I am joyous to assist you anytime.

7 0
3 years ago
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