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Dimas [21]
3 years ago
12

Marla bought one necklace and two bracelets for $67.50. Use the following information to determine the amount she paid for each

bracelet:
The price of the necklace was $27.
The bracelets were both the same price.
Mathematics
2 answers:
alexdok [17]3 years ago
8 0
Ooh, scary math

n+2b=67.5
n=27
27+2b=67.5
minus 27 both sides
2b=40.50
divide both sides by 2
b=20.25

a bracelet costs $20.25
fiasKO [112]3 years ago
8 0
Marla paid a total of $20.25 for each bracelet, im 100% sure
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A biker rode 45 miles in 180 minutes. At what speed (in miles per hour) was the biker travelling? A. 4 B. 17 C. 9 D. 12
Anastasy [175]

Answer:

v = 15 miles / hour

Step-by-step explanation:

Given:

Distance covered by biker = s=45 miles

time taken by him = t=180 minutes

TO Find:

speed in miles per hour = v = ?

Solution:

As it is given that the distance covered is 45 miles

and time taken by him is 180 minutes

as one hour have 60 minutes

so time taken by rider = t = 180 /60

                                          = 3 hours

this step is done because we have to find speed in miles per hour

Now

The formula for finding the distance is

distance = speed * time

or

s = v * t

we have to find v

so dividing both sides by t

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it becomes

v = \frac{s}{t}

Putting the values

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