The price of the pear is $0.6
Given:
The total cost of lunch is $3.50, consisting of a juice, a sandwich, and a pear.The juice cost 1.5 times as much as the pear.The sandwich costs $1.40 more than the pear.
From above statements
Juice + sandwich + pear = $3.50 -----------eq(1)
Juice = 1.5 * pear
sandwich = pear + $1.40
substitute juice and sandwich values in eq(1)
1.5 pear + pear + $1.40 + pear = $3.50
3.5 pear = $3.50 - $1.40
pear = $2.10/3.5
pear = $0.60
Hence the price of the pear is $0.6
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Answer:
Where
and
And the z score is given by:

And since z = 0.75 we can replace like this:

And if we solve for x we got:

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 ACT scores of a population, and for this case we know the distribution for X is given by:
Where
and
And the z score is given by:

And since z = 0.75 we can replace like this:

And if we solve for x we got:

-11 is the answer
2(-2)-3(3)-(-2)
-4-9+2
-13+2
-11
Answer:
um wow that is realy hard
Step-by-step explanation: