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Sunny_sXe [5.5K]

3 years ago

15

Sams invested $2700 in an account with annually compounded interest. After 7 years, he had $3432 in the account. What was the in

ternet rate of the account. Found your answer to one decimal place. Do not write the percentage sign.

1 answer:

OlgaM077 [116]3 years ago

3 0

Answer:

3.5

Step-by-step explanation:

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Cali ran a 400-meter race in 65.49 seconds. Suppose that she ran the first half of the race in 31.73 seconds. How long did it t

zhenek [66]

Answer:

Step-by-step explanation:

time taken to complete the second half=65.49-31.73=33.76 seconds

3 0

3 years ago

How do I find the mean absolute deviation of a data set

sergeinik [125]

1. To find the mean absolute deviation of the data, start by finding the mean of the data set.
2. Find the sum of the data values, and divide the sum by the number of data values.
3.Find the absolute value of the difference between each data value and the mean: ...
4. <span>Find the sum of the absolute values of the differences.</span>

6 0

3 years ago

Solve this system of equations.<br><br> x + y = -3<br><br> x - y = 1

Sindrei [870]

A. (-1,-2)

Because:
x + y = -3
-1 + (-2) = -3
-3 = -3

x - y = 1
-1 - (-2) = 1
-1 + 2 = 1
1 = 1

4 0

4 years ago

Read 2 more answers

Find the generating function for the sequence 1,-2,4,-8, 16, ...

kirill [66]

Answer:

$a(x)=\dfrac{1}{1+2x}$

Step-by-step explanation:

The generating function a(x) produces a power series ...

$a(x)=a_0+a_1x+a_2x^2+a_3x^3+\dots$

where the coefficients are the elements of the given sequence.

We observe that the given sequence has the recurrence relation ...

$a_0=1;a_n=-2a_{n-1} \quad\text{for n $>$ 0}$

This can be rearranged to ...

$a_n+2a_{n-1}=0$

We can formulate this in terms of a(x) as follows, then solve for a(x).

$\sum\limits^{\infty}_{n=1} {a_{n}x^n} =a(x)-a_0 \quad\text{and}\\\\\sum\limits^{\infty}_{n=1} {2a_{n-1}x^n} =(2x)a(x) \quad\text{so}\\\\\sum\limits^{\infty}_{n=1} {(a_n+2a_{n-1})x^n}=0=a(x)-a_0+2xa(x)\\\\a(x)=\dfrac{a_0}{1+2x}=\dfrac{1}{1+2x}$

The generating function is ...

a(x) = 1/(1+2x)

3 0

3 years ago

Read 2 more answers

An automobile travels 140 miles in 4 hours. Find the average rate of speed

katen-ka-za [31]

Answer:

35mph

Step-by-step explanation:

divide 140/4=35

7 0

2 years ago