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3 years ago

Simplify 1/a+b + 1/a-b + 2b/a^2-b^2

Mathematics

1 answer:

Simora [160]3 years ago

8 0

Answer:

−a^2 b^2 + 2a + 2b

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a^2

Step-by-step explanation:

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what interest rate is needed to turn $2500 into $15,000 in 14 years if interest is compounded weekly?

Anastasy [175]

Answer:

0.6845% per week.

Step-by-step explanation:

Simple Interest Calculation A = P(1 + rt)

Solving our equation:

r = (1/730.5)((15000/2500) - 1) = 0.00684463

r = 0.00684463

Converting r decimal to R a percentage

R = 0.00684463 * 100 = 0.6845%/week

Calculating the annual rate

0.6845%/week × 52 weeks/year = 35.594%/year.

The interest rate required to get a total amount, principal plus interest, of $15,000.00 from simple interest on a principal of $2,500.00 over 14.05 years (730.5 weeks) is 0.6845% per week.

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3 years ago

A combined total of $46,000 is invested in two bonds that pay 4% and

valkas [14]

Answer: 4%-16000 and 9.5%-30000

Why:

1) x+y=46000

x=46000-y

2) 4%x+9,5%y=3490;

4x + 9.5y=349000; so 4*(46000-y)+9.5y=349000;

5.5y=165000

y=30000

x=46000-30000=16000

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3 years ago

there are 40 black balls this is 4 more than twice the number of yellow balls how many yellow boll are there

miss Akunina [59]

Answer:

There are 5 yellow balls

Step-by-step explanation:

40/4 = 10

10/2 = 5

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3 years ago

Read 2 more answers

425 school children were surveyed about what they want to be when they grow up, out of a choice of five professions. The results

hammer [34]

Given:

425 school children

Teacher : 80
Doctor : 105
Lawyer : 70
Police Officer : 70
Firefighter : 100
Total = 425

After applying Pearson's chi-squared test, it is concluded that this data reflects a real difference in the population.

$x^{2} = summation ((O_i - E_i)^2/E_i)$

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4 years ago

Is 0.6 repeating a rational number

julsineya [31]

Any decimal number that is repeating can be written in the form $\frac{a}{b}$ with b not equal to zero, so they are rational numbers.

The short answer is yes, 0.6 repeating is a rational number.

Hope this helped :)

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3 years ago

Simplify 1/a+b + 1/a-b + 2b/a^2-b^2​

Simplify 1/a+b + 1/a-b + 2b/a^2-b^2