500,000 is that number rounded.
Hi! -3/7 X -2/7 equals 6/35
( The -2 is only negative not the 7 by the way )
I hope this helps you, Goodluck :)
Answer:
92.65 % light bulbs last less than 2080 hours
Step-by-step explanation:
We are given that The amount of time a certain brand of light bulb lasts is normally distributed
Mean =
Standard deviation =
We are supposed to find What percentage light bulbs last less than 2080 hours, to the nearest tenth

Z=1.45
Refer the z table for p value
p value = 0.9265
Hence 92.65 % light bulbs last less than 2080 hours
csc(-120°)= -(2√(3))/3
or in decimal form -1.154700538
Answer:
25/100×52
1/4×52
1×13
13
Step-by-step explanation:
hope this helps you!!!