Let's use the variable E to represent the total value spent by Elena and T to represent the total value spent by Taniy.
If Elena spent $7.45 plus the cost of 3 pounds of cherries, the expression for the amount she spent is:
Taniy spent $3.35 plus the cost of 2 pounds of cherries, so the expression for the amount the spent is:
To find how much more Elena spent, let's subtract both expressions:
Therefore the answer is 4.1 + p.
Answer:
0.0104
Step-by-step explanation:
Given that, the lifespans of crocodiles have an approximately Normal distribution, with a mean of 18 years and a standard deviation of 2.6 years.
So, mean,
and standard deviation,
The z-score, for any arbitrary life span of x year, is given by
By using the given values, we have
The z-score for x=24, by using equation (i), is
From the table, the area to the left side of z=2.31 =0.98956
But, the proportion of crocodiles have lifespans of at least 24 years
= Area to the right side of the z=2.31
=1- (Area to the left side of the z=2.31)
=1-0.98956
=0.01044
So, the proportion of crocodiles that have lifespans of at least 24 years is 0.0104.
Hence, option (a) is correct.