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AnnyKZ [126]
2 years ago
14

Sam opened a money-market account that pays 5% simple interest. he started the account with $7,000 and made no further deposits.

when he closed the account, he had earned $1,400 in interest. how long did he keep his account open?
Mathematics
1 answer:
Eddi Din [679]2 years ago
7 0
Assuming he gets 5% annually then the answer is 4 years
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A restaurant bill is $76.25. How much would a 15% tip be?
miv72 [106K]

Answer:

$11.43

Step-by-step explanation:

use a calculator and type in 76.25 + 15%, which will equal 87.68.

Then you subtract 76.25 from 87.68. 87.68 - 76.25 = 11.43.

A 15% tip would be $11.43

6 0
2 years ago
Read 2 more answers
Which statement shows the associative property of addition?
DaniilM [7]
<span>associative property of addition

answer is 
</span><span>(u + 7) + 13 = u + (7 + 13)</span>
8 0
3 years ago
What is the slope of the line that passes through the points listed in the table?
brilliants [131]

Answer:

B. 2

Step-by-step explanation:

(4, 3) (7, 9)     M = Slope

M = \frac{y^2-y^1}{x^2-x^1}      Slope formula

M=\frac{9-3}{7-4}       Using the slope formula, plot both x and y intercepts

M=\frac{6}{3}           Slope needs to be simplified into a whole number

M=2          

4 0
2 years ago
Assume that f(x)=ln(1+x) is the given function and that Pn represents the nth Taylor Polynomial centered at x=0. Find the least
WINSTONCH [101]

Answer:

the least integer for n is 2

Step-by-step explanation:

We are given;

f(x) = ln(1+x)

centered at x=0

Pn(0.2)

Error < 0.01

We will use the format;

[[Max(f^(n+1) (c))]/(n + 1)!] × 0.2^(n+1) < 0.01

So;

f(x) = ln(1+x)

First derivative: f'(x) = 1/(x + 1) < 0! = 1

2nd derivative: f"(x) = -1/(x + 1)² < 1! = 1

3rd derivative: f"'(x) = 2/(x + 1)³ < 2! = 2

4th derivative: f""(x) = -6/(x + 1)⁴ < 3! = 6

This follows that;

Max|f^(n+1) (c)| < n!

Thus, error is;

(n!/(n + 1)!) × 0.2^(n + 1) < 0.01

This gives;

(1/(n + 1)) × 0.2^(n + 1) < 0.01

Let's try n = 1

(1/(1 + 1)) × 0.2^(1 + 1) = 0.02

This is greater than 0.01 and so it will not work.

Let's try n = 2

(1/(2 + 1)) × 0.2^(2 + 1) = 0.00267

This is less than 0.01.

So,the least integer for n is 2

7 0
3 years ago
What are these slopes?
Nookie1986 [14]

Answer:

4. \frac{-5}{1} or -5 (It's a negative slope)

5. 0 (It's a horizontal line)

6. \frac{2}{3}

Formula: \frac{rise}{run}

4 0
2 years ago
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