Help with word problem 29

Mathematics

1 answer:

gavmur [86]3 years ago

3 0

Hey so theirs this thing it gets you a person and all you have to do is take a pic of your problem and they will help you thank me later :)

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The radius of a circular track is 0.2 mile. Ellie ran around 3 times. How many kilometers did she run

My name is Ann [436]

Circumference = 2πr
So the circumference of the track is C = 2π .2 or .4π
3 times around the track is .4π x 3 or 1.2π - this is the answer but most teachers will want you to use 3.14 for pi.
so 1.2 x 3.14 = 3.768 km

Do you notice that I waited until the end to use the actual value of pi (3.14) in my calculations.
Keeping things in pi units until the very end saves time.

6 0

3 years ago

The line with slope negative-4/3 is steeper than the line with slope negative-2

Mama L [17]

The bigger absolute value slope will have the steeper line

so u have slopes of -4/3 and -2.....the absolute values of these are 4/3 (or 1 1/3) and 2........2 is larger then 4/3.....so the line with the slope of -2 is steeper then the line with the slope of -4/3......so the statement u wrote is false

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3 years ago

Use your TVM Solver to determine the future balance in a mutual fund account (a type of investment account) if you make weekly p

Paladinen [302]

Answer:

$46,141.71

Step-by-step explanation:

This looks about right, based on weekly deposits for the duration. However, I cannot vouch for it entirely, as the number of weekly deposits in 15 years will actually be 782.

_____

Computing this by hand doing the initial balance separately from the weekly deposits, I get a total of $46,252.10 using 782 weekly deposits. For that purpose, I tried to figure an equivalent weekly interest rate given monthly compounding and the fact there are 52 5/28 weeks in a year on average.

I suspect the only way to get this to the cent would be to build a spreadsheet with payment dates and interest computation/payment dates. Some months, there would be 5 deposits between interest computations; some years there would be 53 deposits.