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FrozenT [24]
2 years ago
14

The current in a river is 1.0 meters/second. Britney swims 300 meters against the current. If she normally swims with a speed of

2.0 meters/second in still water, how long does it take her to complete the trip?
A.
100 seconds
B.
200 seconds
C.
400 seconds
D.
300 seconds
Mathematics
2 answers:
AVprozaik [17]2 years ago
5 0

Answer:

D) 300 seconds

Step-by-step explanation:

if the river is traveling 1 m/s and Britney is traveling 2 m/s, then half of her speed would be canceled out, resulting in her only traveling 1 m/s taking her 300 seconds or 5 minutes to complete the trip.

AnnZ [28]2 years ago
4 0
Her speed against current= speed in still water - speed of current
= 2 - 1 =1 meter/seconds
Time taken = distance/ speed
= 300/1
= 300 seconds
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Suri's age is 4 less than 3 times her cousin's age. Suri is 17 years old. Which method can be used to find c, her cousin's age?
Mila [183]

Answer:

7 years

Step-by-step explanation:

Suri's age=17 years

Her cousin's age =c

Suri's age is 4 less than 3 times her cousin's age

4 less than 3 times her cousin's age means subtract 4 from 3 times her cousin's age

17=3c - 4

Find c which is her cousin's age

Add 4 to both sides

17+4=3c - 4 + 4

17+4=3c

21=3c

Divide both sides by 3

21/3=3c/3

7=c

Therefore,

C= 7

Her cousin's age = 7 years

4 0
3 years ago
Which is an algebraic expression for five more then Z?
faltersainse [42]
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4 0
3 years ago
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What do i do for this problem
Margaret [11]
<span>The answer would be 20.

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3 years ago
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Which equation represents this situation
EastWind [94]

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5 0
3 years ago
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OLEGan [10]

Answer:

18x + 13y = 60

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Substitution

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--------------------------

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3 years ago
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