Life Expectancy Life expectancy for all the different countries in the world ranges from a low of only 45.6 years (in Sierra Leone) to a high of 83.8 years (in Hong Kong). Life expectancies are clustered at the high end, with about half of all the countries having a life expectancy between about 74 and the maximum of 83.8 . A few countries, such as Sierra Leone, have a very low life expectancy.

(1) What is the shape of the distribution of life expectancies for all countries?

a. Symmetric.
b. Skewed to the right.
c. Skewed to the left.
d. None of these.

(2) From the information given, estimate the median of the life expectancies.
Round your answer to the nearest integer.

(3) Will the mean be larger or smaller than the median?

a. Smaller
b. Larger

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3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.