Answer:
a. f(n)=3(to the power of n)+1
n is the number of days, day one being when the student sent it to 3 others
the plus one is the one student
You answer is 4.7
Explanation
I assume that the shaded region is the area inside of rectangle and outside the circle
so
The shaded region is equal to the area of rectangle minus the area of circle
step 1
Find the area of rectangle
The area of rectangle is equal to multiply the length by the width
A= (3)-(11)=33 cm^2
tep 2
Find the area of the circle
The area of the circle is
A=\pi r^{2}
we have
r=3\ cm
\pi =3.14
substitute
A=(3.14)(3^{2})
A=28.26\ cm^{2}
step 3
Find the area of the shaded region
33-28.26=4.74\ cm^{2}
I hope this helps you and Please hit the braninslist answer thank You!
Answer:
7%
Step-by-step explanation:
Answer:
y = 22°
Step-by-step explanation:
the sum of the interior angles of a triangle is 180 degrees
40 + 2x = 180
2x = 140
x = 70
'x' and '5y' form a linear pair, meaning they add up to 180 degrees
x + 5y = 180
substitute 70 for 'x'
70 + 5y = 180
5y = 110
y = 22
<span>M=2.60b + 50
When b = 25
M = 2.60(25) + 50 = $115
Answer: Chris earns $115 for selling the 25 books.</span>
