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OpenStudy (juliannegirltomboy):
is it c
OpenStudy (juliannegirltomboy):
or D
OpenStudy (juliannegirltomboy):
are you sure and do you agree @Calamitylikespie
OpenStudy (anonymous):
sorry it is b because it is time
OpenStudy (anonymous):
i'm so sorry
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OpenStudy (anonymous):
40/10 is your correct answer.
OpenStudy (anonymous):
Distance = Rate * Time
OpenStudy (anonymous):
it is b =8.5 s for the second question
OpenStudy (juliannegirltomboy):
im on the second one your on first @Calamitylikespie
OpenStudy (anonymous):
Write out the second one, I will try help dear.
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OpenStudy (juliannegirltomboy):
What is the value of time, t, for the given values of distance, d, and rate, r?
d = 425 m, r = 50 m/s
A.
8.5 m
B.
8.5 s
C.
21,250 m
D.
21,250 s
OpenStudy (juliannegirltomboy):
is it D.
OpenStudy (anonymous):
it is B
OpenStudy (anonymous):
i am sure is B, no doubt
OpenStudy (anonymous):
and don't medal me
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OpenStudy (juliannegirltomboy):
how did you get b
OpenStudy (anonymous):
i just even send the video link
OpenStudy (anonymous):
The value of time is 8.5 seconds. Choice B.
Given:
Distance = 425m
Rate = 50 m/s
Time = ?
Time = Distance / Rate
Time = 425m ÷ 50 m/s
Time = 8.5s
Therefore they are correct.
OpenStudy (juliannegirltomboy):
ok
OpenStudy (juliannegirltomboy):
4.
(1 pt)
Maria's family drove 140 miles to her grandparents' house and averaged 56 mi/h on the way there. On the return trip, they averaged 50 mi/ hr.
What was the total time Maria's family spent driving to and from her grandparents' house?
A.
2.5 h
B.
2.6 h
C.
5.2 h
D.
5.3 h
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OpenStudy (anonymous):
Is it very similar to the first question. Remember that Distance = Rate * Time
Time = Distance / Rate
Rate = Distance / Time
OpenStudy (juliannegirltomboy):
so 140*50?
OpenStudy (anonymous):
Hmm... holdon a moment.
OpenStudy (anonymous):
The answer would be D; 5.3 h
OpenStudy (anonymous):
bye i'm in class, Calamitylikespie would help you
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OpenStudy (juliannegirltomboy):
@Calamitylikespie your right i got same answer
OpenStudy (juliannegirltomboy):
@joojoe bye
OpenStudy (juliannegirltomboy):
here is my last question
OpenStudy (juliannegirltomboy):
5.
(1 pt)
A train traveled 210 miles in 3.5 hours to its first stop. It then continued on traveling another 130 miles in 2.5 hours.
What was the average speed of the train for the entire journey?
A.
52 mi/h
B.
56 mi/h
C.
56.7 mi/h
D.
60 mi/h
OpenStudy (anonymous):
One moment, I am solving it.
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OpenStudy (juliannegirltomboy):
ok
OpenStudy (juliannegirltomboy):
is it b
OpenStudy (anonymous):
You will divide the total number of miles by the total number of hours.
OpenStudy (anonymous):
The answer is 56.66666666
OpenStudy (anonymous):
So it will be B.
Because you will take 340/6.
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OpenStudy (juliannegirltomboy):
yep i got same answer so its b
OpenStudy (anonymous):
If you were to round up for the need to be exact, it will be C.
OpenStudy (anonymous):
if you need my help let me know bye
OpenStudy (anonymous):
The exact answer is 56.67.
OpenStudy (juliannegirltomboy):
im waiting for my score i passed
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OpenStudy (anonymous):
If you were to round it up it'd be 56.7
OpenStudy (juliannegirltomboy):
thanks for the help
OpenStudy (anonymous):
No problem. I wish I had help with my Trig.
OpenStudy (juliannegirltomboy):
im in middle school so i dont know much about that stuff
OpenStudy (anonymous):
Ah. I'm in 12th grade.
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