Set up the ratios and cross multiply.
24/18=x/6
8=x
Answer:
x = -15
Step-by-step explanation:
Because -15/-5 = 3, 3+4 =7
10-3=7
7=7
Answer:
1.4
Step-by-step explanation:
Answer:
The answer is D. F(x) =2-X²
Answer:
![P(A\cup B)= 0.875](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3D%200.875)
Step-by-step explanation:
From the diagram, none of the students play both instruments.
This means the two events are mutually exclusive.
![P(A\cup B)=P(A)+P(B)](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3DP%28A%29%2BP%28B%29%20)
The number of people playing instruments is 20.
![P(A\cup B)= \frac{20}{40} + \frac{15}{40}](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3D%20%5Cfrac%7B20%7D%7B40%7D%20%20%2B%20%20%5Cfrac%7B15%7D%7B40%7D%20)
![P(A\cup B)= \frac{35}{40}](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3D%20%5Cfrac%7B35%7D%7B40%7D%20)
![P(A\cup B)= 0.875](https://tex.z-dn.net/?f=P%28A%5Ccup%20B%29%3D%200.875)