Week 1 Quiz_ Attempt review _ GMC
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School
Georgia Military College *
*We aren’t endorsed by this school
Course
111
Subject
Mathematics
Date
Apr 3, 2024
Type
Pages
5
Uploaded by ChefArtKookabura34
Started on
Thursday, March 21, 2024, 9:50 AM
State
Finished
Completed on
Thursday, March 21, 2024, 10:17 AM
Time taken
26 mins 19 secs
Marks
8.00/10.00
Grade
80.00
out of 100.00
Question 1
Correct
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Question 2
Correct
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Concrete is sold by the cubic yard. What is the mass, in kilograms, of 3.50 cubic yard of concrete that is 2.79 times as dense as water?
(Consider that 1.00 m = 1.094 yd, a cubic meter of water has a mass of 1,000 kg, and density is mass per unit volume.)
Select one:
a.
12786 kg
b.
7460 kg
c.
10960 kg
d.
14079 kg
Your answer is correct.
The correct answer is: 7460 kg
Snuggles eats 0.086 pounds of wet cat food in a day. The wet food is available in 0.48 lb cans, priced $29.99/kg. How much it cost to feed
Snuggles for half a year? (Consider that 1.0 kg = 2.2 lb and 1 month = 365/12 days)
Select one:
a.
$39.26
b.
$35.66
c.
$213.95
d.
$215.93
Your answer is correct.
The correct answer is: $215.93
Question 3
Correct
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Question 4
Correct
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A bear travels in average 11.67 km per day. How many miles does the bear travels in 8 years? Consider that 1 mile = 1.609 km.
Select one:
a.
7990 miles
b.
29925.73 miles
c.
34.08 × 10
miles
d.
21.18 × 10
miles
3
3
Your answer is correct.
The correct answer is: 21.18 × 10
miles
3
In the sum A + B + C + A*B, A has 6 significant figures, B has 3 significant figures, and C has 5 significant figures. How many significant figures
does the sum have?
Select one:
a.
2
b.
3
c.
5
d.
Cannot Determine
Your answer is correct.
The correct answer is: 3
Question 5
Correct
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Question 6
Correct
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Question 7
Incorrect
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A contractor needs 300 cubic pavers to build a patio, priced $1.99 per paver. To reduce the cost for materials, the contractor suggests cutting
pavers in half so that a smaller number of pavers are needed to build the same patio. However, cutting pavers adds $300 to labor cost. In
addition, about 5% of pavers are damaged in the cutting process. Is it worth to cut pavers in half?
Select one:
a.
Yes, it is cheaper to cut pavers in half.
b.
No, it is cheaper to use full size pavers.
Your answer is correct.
The correct answer is: No, it is cheaper to use full size pavers.
If the sum of two vectors is zero then the two vectors must be parallel with each other?
Select one:
True
False
The correct answer is 'True'.
Concrete is sold by the cubic yard. What is the mass, in kilograms, of 2.00 cubic yard of concrete that is 3.45 times as dense as water?
(Consider that 1.00 m = 1.094 yd, a cubic meter of water has a mass of 1,000 kg, and density is mass per unit volume.)
Select one:
a.
3450 kg
b.
4025 kg
c.
9070 kg
d.
5270 kg
Your answer is incorrect.
The correct answer is: 5270 kg
Your preview ends here
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Question 8
Incorrect
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Question 9
Correct
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A contractor needs 1200 cubic pavers to build a patio. To reduce costs, the contractor suggests cutting pavers in half so that a smaller number
of pavers are needed to build the same patio. However, cutting pavers adds $300 to labor cost. In addition, about 8% of pavers are damaged
in the cutting process. What is the cost difference
between using full size vs. using pavers cut in half (1 paver costs $ 1.25)?
Select one:
a.
$816.25
b.
$300
c.
$383.75
d.
$83.75
Your answer is incorrect.
The correct answer is: $383.75
The average size of a transistor in a microprocessor is 9 nanometers. A human hair has a diameter of 65 microns (micrometers). How many
transistors fit across a human hair?
Select one:
a.
720
b.
72
c.
72,000
d.
7.2
e.
7,200
Your answer is correct.
The correct answer is: 7,200
Question 10
Complete
Mark 1.00 out of 1.00
An object moves along a linear path from A to B. Consider that the points marked in the diagram depict the position of the object at equal
time intervals
(e.g., every five seconds). Discuss if the acceleration changes its magnitude and/or direction while the object travels from A to B.
[Figure description: a set of 9 points are marked on a straight line, with the first and last points marked A and B, respectively. The distance
between consecutive points increases gradually till the mid-point between A and B. Then, the distance between consecutive points decreases
gradually from mid-point till B. The first, second, third and fourth interval marked by the points is equal to the last, seventh, sixth and fifth
interval, respectively.]
Based on the description of the image, the object is covering greater distances in each successive time interval. This indicates an increase in
speed, which is a sign of positive acceleration. Therefore, the magnitude of acceleration does change as the object moves from A to B.
Comment: