marcos homework
3 3.15
9 9.75
12 13.0
30 32.5
maribellas homework
4 4.2
8 8.4
20 21.0
28 29.4
based on the tables showing the hours of homework done by marco and maribella for different periods of time, which statement is correct?
a. maribella spends less time on homework per night.
b. there is not enough information to tell who spends less time doing their homework
c. marco and maribella spen equal time doing their homework.
d. marco spends less time on homework per night.
To determine which statement is correct, we need to compare the average time spent on homework per night by Marco and Maribella.
For Marco's homework:
- Period 1: 3 hours
- Period 2: 9 hours
- Period 3: 12 hours
- Period 4: 30 hours
To find the average time spent by Marco per night, we add up the hours and divide by the number of periods:
(3 + 9 + 12 + 30) / 4 = 54 / 4 = 13.5
For Maribella's homework:
- Period 1: 4 hours
- Period 2: 8 hours
- Period 3: 20 hours
- Period 4: 28 hours
To find the average time spent by Maribella per night, we add up the hours and divide by the number of periods:
(4 + 8 + 20 + 28) / 4 = 60 / 4 = 15
Comparing the average times:
- Marco spends an average of 13.5 hours per night.
- Maribella spends an average of 15 hours per night.
Based on these calculations, it is clear that Maribella spends more time on homework per night than Marco. Therefore, the correct answer is:
a. Maribella spends less time on homework per night.
d. marco spends less time on homework per night.
community a
10 26
20 52
40 104
75 195
community b
12 30
24 60
50 125
85 212.5
based on the tables showing the average number of children per household for two different communitites, which community has the most children if both neighborhoods have the same number of households? how many children live in this community if 1,000 households?
a. community b has the most children. there are 2,500 children in this community if there are 1,000 households.
b. community b has the most children. there are 212.5 children which is greater than the 195 in the community a.
c. community a has the most children. there are 2,600 children in this community if there are 1,000 households.
d. community a has the most children. there are 260 children in this community if there are 1,000 households.
b. community b has the most children. There are 212.5 children, which is greater than the 195 in community a.
To determine which statement is correct, let's compare the hours of homework done by Marco and Maribella for each period of time:
Marco's Homework:
- 3 hours
- 9 hours
- 12 hours
- 30 hours
Maribella's Homework:
- 4 hours
- 8 hours
- 20 hours
- 28 hours
Statement a. Maribella spends less time on homework per night: Based on the given data, we can see that Maribella spends less time on homework per night compared to Marco in all four periods of time:
- Marco: 3 hours, Maribella: 4 hours
- Marco: 9 hours, Maribella: 8 hours
- Marco: 12 hours, Maribella: 20 hours
- Marco: 30 hours, Maribella: 28 hours
Therefore, statement a is correct. Maribella spends less time on homework per night than Marco.