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3 years ago

Plz help! Due tonight!

Mathematics

2 answers:

Alecsey [184]3 years ago

7 0

the answer will be

48$ dollars

quester [9]3 years ago

7 0

Answer:

20 + 6x

$44

Step-by-step explanation:

So 5 CD's for 20 dollars is $4 ea. then each one added will be +6 with the variable (x).

so you can't have the first 5 becuase x is used for every one OVER 5.

$ or price = 20 + 6x

plug 4 in because 9-5 = 4

20 + 6(4)

20 + 24

$44

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if Sn is the nth partial sum of the harmonic series, show that e^Sn > n+1. Why does this imply that the harmonic series is di

yanalaym [24]

$S_n=\displaystyle\sum_{k=1}^n\frac1k$

You have

$\ln e^{S_n}=S_n\ln e=S_n$

so showing that $e^{S_n}>n+1$ amounts to the same as showing that $S_n>\ln(n+1)$ .

As $n\to\infty$ , you have $\ln(n+1)\to\infty$ . By comparison, then, it follows that $S_n\to\infty$ at a faster rate, which means $S_\infty$ must diverge.

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4 years ago

HELP HELP Point F is the midpoint of segment DE. DF = 2x+6 and DE = 2x+36. Find DE.

Jobisdone [24]

Answer:

since F is midpoint

DF= FE = 2x+6

DF +FE=DE

2x+6 + 2x+6 = 2x+36

4x + 12 = 2x+36

2x = 24

x=12

DE =2x+36 =2*12 + 36 = 60

Step-by-step explanation:

4 0

3 years ago

Mark invests $8,008 in a retirement account with a fixed annual interest rate of 2% compounded 6 times per year. What will the a

love history [14]

Given:

Principal value = $8,008

Rate of interest = 2% compounded 6 times per year.

Time = 16 years

To find:

The account balance after 16 years.

Solution:

The formula for amount is:

$A=P\left(1+\dfrac{r}{n}\right)^{nt}$

Where, P is principal, r is the rate of interest, n is the number of times interest compounded in an year and t is the number of years.

Putting $P=8,008, r=0.02,n=6,t=16$ in the above formula, we get

$A=8008\left(1+\dfrac{0.02}{6}\right)^{6(16)}$

$A=8008\left(\dfrac{6.02}{6}\right)^{96}$

$A=11022.1721148$

$A\approx 11022.17$

Therefore, the account balance after 16 years is $11022.17.

4 0

3 years ago

What is 524.47 rounded to the nearest tenth?

kolbaska11 [484]

The tenth place is the first number to the right of a decimal. To determine if you're rounding or not, check the hundred's place, 2 numbers to the right of a decimal, for 5 or higher. If it's .45, round to .5, if it's .44, round to .4
Your answer is 524.5, which is B.)

3 0

4 years ago

Read 2 more answers

If G^-1(x) is the inverse of G(x), what is the value of G^-1(G(x))?

Ber [7]

Answer:

$G^{-1}(G(x))=x$

Step-by-step explanation:

Definition: Let f be one-to-one function with the domain A and the range B. Then the inverse function $f^{-1}$ has the domain B and the range A and is defined as

$f^{-1}(y)=x\ \Leftrightarrow \ f(x)=y$

Facts:

1) For every $x\in A:$

$f^{-1}(f(x))=x$

2) For every $y\in B:$

$f(f^{-1}(y))=y$

So, $G^{-1}(G(x))=x$

5 0

4 years ago