Answer:
m<ACB = 59degrees
Step-by-step explanation:
To get <ACB, first we need arcAB
arcAB + arcAC + arcBC = 360
arcAB + 89 + 153 = 360
arcAB+242 = 360
arcAB = 360 - 242
arcAB = 118
Also, m<ACB = 1/2arcAB
m<ACB = 1/2*118
m<ACB = 59degrees
There are 8 students in a art club. There are 3 times as many students in chorus. How many students are in chorus?
We don't know how many students are in chorus. Use n as the students.
n = 8×3
n = 24
The value of n is 24.
So, there are 24 students in chorus.
Answer:
d= 28%
Step-by-step explanation:
![\bold{\text{Answer}:\quad x=3\bigg(\dfrac{ln\frac{14}{7.8}}{ln(5)}\bigg)=1.09}](https://tex.z-dn.net/?f=%5Cbold%7B%5Ctext%7BAnswer%7D%3A%5Cquad%20x%3D3%5Cbigg%28%5Cdfrac%7Bln%5Cfrac%7B14%7D%7B7.8%7D%7D%7Bln%285%29%7D%5Cbigg%29%3D1.09%7D)
<u>Step-by-step explanation:</u>
![7.8e^{\frac{x}{3}\cdot ln(5)}=14\\\\\\e^{\frac{x}{3}\cdot ln(5)}=\dfrac{14}{7.8}\\\\\\ln\bigg(e^{\frac{x}{3}\cdot ln(5)}\bigg)=ln\bigg(\dfrac{14}{7.8}\bigg)\\\\\\\frac{x}{3}}\cdot ln(5)=ln\bigg(\dfrac{14}{7.8}\bigg)\\\\\\\large\boxed{x=3\bigg(\dfrac{ln\frac{14}{7.8}}{ln(5)}\bigg)}\\](https://tex.z-dn.net/?f=7.8e%5E%7B%5Cfrac%7Bx%7D%7B3%7D%5Ccdot%20ln%285%29%7D%3D14%5C%5C%5C%5C%5C%5Ce%5E%7B%5Cfrac%7Bx%7D%7B3%7D%5Ccdot%20ln%285%29%7D%3D%5Cdfrac%7B14%7D%7B7.8%7D%5C%5C%5C%5C%5C%5Cln%5Cbigg%28e%5E%7B%5Cfrac%7Bx%7D%7B3%7D%5Ccdot%20ln%285%29%7D%5Cbigg%29%3Dln%5Cbigg%28%5Cdfrac%7B14%7D%7B7.8%7D%5Cbigg%29%5C%5C%5C%5C%5C%5C%5Cfrac%7Bx%7D%7B3%7D%7D%5Ccdot%20ln%285%29%3Dln%5Cbigg%28%5Cdfrac%7B14%7D%7B7.8%7D%5Cbigg%29%5C%5C%5C%5C%5C%5C%5Clarge%5Cboxed%7Bx%3D3%5Cbigg%28%5Cdfrac%7Bln%5Cfrac%7B14%7D%7B7.8%7D%7D%7Bln%285%29%7D%5Cbigg%29%7D%5C%5C)
x ≈ 1.09
Answer:
Thời gian vận chuyển hàng hóa trên tuyến đường AB là biến ngẫu nhiên X có phân phối
chuẩn với trung bình 5 giờ, độ lệch chuẩn 0, 25 giờ.
a. Chuyến có thời gian lớn hơn 5,2 ( ) /100 a b giờ được xem là trễ, tính tỉ lệ chuyến trễ?
Step-by-step explanation: