Answer:
Step-by-step explanation:
<h3><u>Formula to be used in the question:</u></h3>
<h3><u>Distance for the first 2 hours:</u></h3>
= 130 km
<h3><u>Distance for the next 3 hours:</u></h3>
Speed = 85 km/h
Time = 3 hours
So,
Distance = Speed × Time
Distance = 85 × 3
Distance = 255 km
So,
<h3><u>Total distance from home to destination:</u></h3>
= 130 + 255
= 385 km
<h3><u>Speed on the return journey:</u></h3>
Total distance = 385 km
Time = 5 hours
Speed = Distance / Time
Speed = 385 / 5
Speed = 77 km/hr
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
It easiest to like take the percentages from each answer choice.
d would be the answer because 40% (25%+15%) of $97.39 is abt $57.37
The percentage shows that they were 28% more likely to come from Riverdale High school.
<h3>How to calculate the percentage?</h3>
From the information given, the percentage of those from Rockport will be:
= 25/(25 + 44) × 100.
= 25/69 × 100
= 36.23%
The percentage of those from Riverdale will be:
= 44/(25 + 44) × 100.
= 44/69 × 100
= 63.77%
Therefore, the difference will be:
= 63.77% - 36.23%
= 28% approximately.
Learn more about percentages on:
brainly.com/question/24304697
500,000,000 and 2,000,000
10 exponent 8 is 100000000 because it has 8 0s
multiply that by 5 to get 500,000,000
10 exponent 6 is 1000000 because it has 6 0s
multiply by 2 to get 2,000,000
The volume of the mineral = increase in volume of the water whuich is 16 - 8 = 8mls.
Therefore the mineral's density = 9.6 / 8
= 1.2 g/ ml answer
