Let
x-------> the number of fiction books
y-------> the number of nonfiction books.
we know that
-----> equation 
-----> equation 
Add equation
and equation 
<u>find the value of y</u>



therefore
<u>the answer is</u>
Part a) the number of fiction books is 
Part b) the number of nonfiction books is 
Answer:
108°
Step-by-step explanation:
The area of a sector is given by the formula ...
A = (1/2)r²θ . . . . . where θ is in radians
Solving for θ, we find ...
θ = 2A/r²
For your given sector, the central angle is ...
θ = 2(30π cm²)/(10 cm)² = 0.6π . . . . radians
π radians is 180°, so the central angle in degrees is ...
θ = (0.6)(180°) = 108°
The central angle measure of the sector is 108°.
Here, Total no. of two rolled dice (S) = 36
Sum of 9 when rolling two dice ( A) = 4
Probability of getting sum of 9 while rolling two dice( P) = ?
We konw that ,
P = A / S
= 4 / 36
= 2 / 13
Done ✅ hope it helps
About $117.64, which you can solve by using this equation: 0.85x=99.99