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2 years ago

Insert space to express 725895213 in International numbersystem

Mathematics

1 answer:

Nataly_w [17]2 years ago

6 0

Answer:

725 895 213

Step-by-step explanation:

Seven hundred and twenty five million, eight hundred and ninety five thousand, two hundred and thirteen.

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Your parents will retire in 19 years. They currently have $350,000 saved, and they think they will need $800,000 at retirement.

patriot [66]

Answer:

The annual interest is 6.77%

Step-by-step explanation:

Simple Interest

Definition: Interest calculated on the original principal only of a loan or on the balance of an account.

Unlike compound interest where the interest earned in the compounding periods is added to form the new principal, simple interest only considers the principal to calculate the interest in every period.

The interest earned is calculated as follows:

$I=Prt$

Where:

I = Interest

P = initial principal balance

r = interest rate

t = time

Your parents will retire in t = 19 years. They have P=$350,000 in their savings account and they need to have $800,000 when they retire.

The interest earned is the difference between the final balance and the principal:

I = $800,000 - $350,000 = $450.000

Solving the first equation for r:

$\displaystyle r=\frac{I}{P.t}$

Substituting:

$\displaystyle r=\frac{450,000}{350,000\cdot 19}$

Calculating:

r = 0.0677

Or, equivalently:

r = 6.77%

The annual interest is 6.77%

5 0

2 years ago

You apply for a job and have to take a drug test. You are curious about the error rate for the test so you do some research. You

Ber [7]

Answer:

Test statistic Z = -1.0

|Z| = |-1.0| < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

Step-by-step explanation:

Step(i):-

Given that the population proportion P = 14% =0.14

Given that the sample size 'n' = 382 tests

Given that find a study where 47 out of 382 test results using this test were wrong (either a false positive or a false negative).

Sample proportion

$p = \frac{x}{n} = \frac{47}{382} = 0.1230$

Null hypothesis: H₀ : P = 0.14

Alternative Hypothesis:H₁ : P≠ 0.14

Step(ii):-

Test statistic

$Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }$

$Z = \frac{0.1230-0.14}{\sqrt{\frac{0.14 X0.86}{382} } }$

Z = - 1.0

|Z| = |-1.0| < 1.96 at 0.05 level of significance.

Final answer:-

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

4 0

2 years ago

Question 2 Which of the following is not shown on the scatter plot below?

Anton [14]

Answer:

Step-by-step explanation:

Outlier

6 0

2 years ago

What is the divisor of 4/12=1/3

gregori [183]

Answer:

Im pretty sure its 1. Not 100% sure but im 99.99% sure

Step-by-step explanation:

3 0

1 year ago

Use the Pythagorean identity

kirza4 [7]

Answer:

2√61/19

Step-by-step explanation:

sin^2 x = 1 - cos^2 x

= 1 - (3√13/ 19)^2

= 1 - 117/361

= 244/361

sin x = √244/19

= 2√61/19.

8 0

1 year ago

Insert space to express 725895213 in International numbersystem​

Insert space to express 725895213 in International numbersystem