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Klio2033 [76]
3 years ago
10

I need help with this does anyone understand this?

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

Let y = f(x)

=  > y =  \frac{19}{ {x}^{3} }

=  >  {x}^{3}  =  \frac{19}{y}

=  > x =   \sqrt[ 3]{ \frac{19}{y} }

{f}^{ - 1} (x) =   \frac{ \sqrt[3]{19} }{ \sqrt[3]{x} }

<h2>option A</h2>
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Solve the equation.<br><br> 89=x+1/3(7)
ser-zykov [4K]
89=x+1/3(7)
89=x+7/3
267/3=x+7/3
260/3=x
86 2/3=x. Hope it help!
7 0
3 years ago
You have a gift card for a coffee shop worth $90. Each day you use the card to get a coffee for $4.10. Write an explicit formula
Fiesta28 [93]

Answer: The value of the card after you buy your 8th coffee will be $61.3

Step-by-step explanation:

The worth of the gift card for the coffee shop is $90. Each day you use the card to get a coffee for $4.10. This means that the worth of the gift card is reducing by $4.10 each day. This rate is in arithmetic progression.

The formula for the nth term of an arithmetic sequence, Tn is expressed as

Tn = a + (n-1)d

Where a is the first term

d is the common difference

n is the number of days

From the information given,

a = $90

d = - $4.1

The explicit formula representing the amount of money available will be

Tn = 90 - 4.1(n - 1)

The value of the card after you buy your 8th coffee will be

T8 = 90 - 4.1(8 - 1) = T8 = 90 - 4.1×7

T8 = 90 - 28.7

T8 = $61.3

7 0
3 years ago
A Honda Element with a dealer invoice price of $19,700 was retail priced at $23,000 how much is the approximate percent markup b
-BARSIC- [3]
So the mark up is 23,000-19,700 = 3,300

To figure of what the percent of markup is based on the SELLING price:

3,300/23,000 = x/100; now cross multiply and you have:
23,000x = 3,300(100)
23,000x = 330,000; isolate x by dividing both sides by 23,000, and you get x= 14.35

To check your work multiply 23,000 x 0.1435 = 3000.05, which was the approximate amount of markup
4 0
3 years ago
Use the Distributive Property to simplify
Anon25 [30]

well what i got was:

the exact form: 233/28

decimal form: 7.96428571...

mixed number form: 7 27/28

not sure if this is right at all but i hope it helps at least a little

8 0
3 years ago
Read 2 more answers
Pls help me or else...................
Kipish [7]

Answer:

i cant see the pic sorry

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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