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8090 [49]
3 years ago
14

Suppose a runner completes one lap around a 400-m track in a time of 50 s. Calculate the magnitude of the average velocity of th

e runner.
Mathematics
1 answer:
allochka39001 [22]3 years ago
3 0

Answer:

8m/s

Step-by-step explanation:

The formula to calculate the average velocity would be

V=meters/second

in this case we have that

V=400m/50s = 8m/s

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7 0
4 years ago
What is the total cost of a sweatshirt if the regular price is $42 and the sales tax is 5 1/2
leonid [27]

Answer:

$44.31

Step-by-step explanation:

Regular Price = $42

Sales Tax Rate = 5  1/2% or 5.5%

The total cost would be the regular price PLUS the sales tax. We find the sales tax by finding 42's 5.5%.

First, converting percentage to decimal (dividing by 100):

5.5% = 5.5/100 = 0.055

Now finding 5.5% of $42:

42 * 0.055 = $2.31

Now, the total price is the SUM of regular and this sales tax:

Total Price = 42 + 2.31 = $44.31

6 0
3 years ago
Juana’s dad gave her an exponentially increasing allowance as an experiment. On the first day, he gave her 1¢. On the second day
borishaifa [10]
$5.12

Make a chart for this sort of problem it makes it easier. Excel is good for it
5 0
3 years ago
What is 5b^-2/b^-3? I need to know
qaws [65]

Answer:

5b

Step-by-step explanation:

<em>Hope this helps <3</em>

6 0
2 years ago
Joakkm is icing 30 cupcakes. He spreads mjnt icing on 1/5 of the cupcakes and chocolate on 1/2 of the remaining. The rest will g
VladimirAG [237]

Answer:

12 cupcakes will have vanilla icing

Step-by-step explanation:

1/5 of 30 = 6

30- 6 = 24

24/ 2 = 12

6 mint icing

12 chocolate icing

12 vanilla icing

4 0
3 years ago
Read 2 more answers
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