It's not a must so you don't really have to it depends on the question
The first function is represented by the green line, while the second is represented by the orange line
<h3>What are piecewise functions?</h3>
Piecewise functions are functions that have at least 2 sub functions, each of which have different intervals
The function is defined by

<h3>(a) Graph the first function</h3>
The first function in f(x) is defined by

See attachment for the graph of the first function
<h3>(b) Graph the second function</h3>
The second function in f(x) is defined by

See attachment for the graph of the second function
Read more about piecewise functions at:
brainly.com/question/18859540
Answer: a) 0.0058
b) 0.0026
Step-by-step explanation:
Given : The probability of having clear sunny skies in Seattle in July : p= 0.40
The number of days spent in Seattle in July: n= 18
a) Using, Binomial probability formula : 
The probability of having clear sunny skies on at least 13 of those days:-




b) On converting binomial to normal distribution, we have

Let x be the number of days having clear sunny skies in Seattle in July.
Then, using
we have

P-value = 

Answer:
The number rounded to the nearest tenth is 15.1
Step-by-step explanation:
<u>Step 1: Make an equation</u>
When a number is decreased by 27%, the result is 11.
x * (1 - 0.27) = 11
<u>Step 2: Solve inside the parenthesis</u>
x * (1 - 0.27) = 11
x * 0.73 = 11
<u>Step 3: Divide both sides by 0.73</u>
0.73x / 0.73 = 11 / 0.73
x = 15.1
Answer: The number rounded to the nearest tenth is 15.1
I hope this helps you
2 .8.15+2.9.15+2.8.9
16.15+18.15+16.9
240+270+144
654