Solution:
we are given that
The magnitudes of the moon and Sirius are -12.5 and -1.44 respectively.
we have been asked to find approximately how many times is the moon brighter than Sirius?
The word magnitude is used by the scientist to describe the brightness of moon/star/object etc.
So we can find the brightness by dividing the given values. so we get
Hence we can say
The moon is 8.68 times brighter than Sirius.
Step-by-step explanation:
b=a-80
c=b-61
c=a-141
a+b+c=3a-221=430
3a=651
a=217 & b =137 & c=76
It takes 8 trees to make a stack 1.2 metres tall, so if ut takes 20 minutes per tree, then it will take 8 × 20 or 160 minutes, or 2 hours 40 minutes.
Answer: He travels 280 miles.
Step-by-step explanation:
Speed = Distance / Time
Distance = speed x time
Distance covered at first 2 hours at 55 mph
= distance = 55 X 2= 101 miles
Distance covered in next hour at 70mph
Distance = 70 x 1= 70 miles
Distance covered in the last 2 hours at 50mph
Distance = 50 x 2= 100 miles
Total distance traveled = 110+70+ 100= 280 miles.
Answer:
slope=4 calculated it
Step-by-step explanation:
