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zmey [24]
3 years ago
9

F(x)=-8x+20;5-2[f(-1)]​

Mathematics
1 answer:
Anni [7]3 years ago
8 0

Answer:

Step-by-step explanation:

f(x) = -8x + 20

f(-1) = -8* -1 + 20 = 8+20 =28

5 -  2[f(-1)] = 5 - 2*28 = 5 - 56 = -51

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You just purchased two coins at a price of $670 each. Because one of the coins is more collectible, you believe that its value w
DerKrebs [107]

Answer:

The value of first coin will be $151.51 more than second coin in 15 years.

Step-by-step explanation:

You have just purchased two coins at a price of $670 each.

You believe that first coin's value will increase at a rate of 7.1% and second coin's value 6.5% per year.

We have to calculate the first coin's value after 15 years by using the formula

A=P(1+\frac{r}{100})^{n}

Where A = Future value

           P = Present value

           r = rate of interest

           n = time in years

Now we put the values

A=670(1+\frac{7.1}{100})^{15}

A=670(1+0.071)^{15}

A=670(1.071)^{15}

A = (670)(2.797964)

A = 1874.635622 ≈ $1874.64

Now we will calculate the value of second coin.

A=670(1+\frac{6.5}{100})^{15}

A=670(1+0.6.5)^{15}

A=670(1.065)^{15}

A = 670 × 2.571841

A = $1723.13

The difference of the value after 15 years = 1874.64 - 1723.13 = $151.51

The value of first coin will be $151.51 more than second coin in 15 years.

8 0
3 years ago
What is the value of X in the trapezoid shown below?​
marysya [2.9K]
Answer: 17



Step by step : 146+2x=180
2x=34
X=17
4 0
3 years ago
solve the system of equations below by graphing both equations with a pencil and paper y = x + 1 y = 1/2x + 3
Brut [27]
You can use desmos! and to solve you find the point(s) where they overlap
8 0
3 years ago
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Richard goes electronics store. He buys 2 memory cards that cost 8.99 each and 3 packages of batteries that are on sales for 7.4
Licemer1 [7]
His total is (73.37) hope it helps and have a great day! 
3 0
3 years ago
#20 i
Ivahew [28]

Answer:

First, we need to know the relationship between "a" and "c". And "10" is not a co-ordinate. A co-ordinate has 2 or 3 numbers in it like 10,17, or like 10,17,5.

Step-by-step explanation:

8 0
3 years ago
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