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3 years ago

8

You want to deliver a package to japan.the fed ex delivery service charges a $15 flat fee plus $2 per additional kilogram. You c

an also use the usps priority mail service which charges you $5 per kilogram

1 answer:

Blababa [14]3 years ago

7 0

Depending on how heavy the package is, you should take the Fed Ex if the package is heavy, and the UPS for something that is small

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Nolan Walker decided to buy a used snowmobile since his credit union was offering such low interest rates. He borrowed $2,700 at

Lapatulllka [165]

He pays in interest of $111.0375. Interest is calculated in the two ways, by compounding or by simple interest.

<h3>How to calculate simple interest amount?</h3>

If the initial amount (also called as principal amount) is P, and the interest rate is R % annually, and it is left for T years for that simple interest, then the interest amount earned is given by:

$I = \dfrac{P \times R \times T}{100}$

The given data in the problem is;

The principal is,P=$2700

The rate of interest = 3.5%

The total time interval is,T

The total time interval is;

$\rm T= 5+365+31+21\ days$

The simple interest is found as;

$\rm SI = P \times R \times T \\\\ \rm SI = 2700 \times 0.0035 \times 1.172222 \\\\ SI=111.0375$

Hence, he pays in interest of $111.0375.

To learn more about simple interest, refer to the link;

brainly.com/question/5319581

#SPJ1

8 0

2 years ago

Determine the solution to the system of equations graphed below and explain your reasoning in complete sentences.

Sonbull [250]

Answer:

(0, - 3 )

Step-by-step explanation:

the solution to the system is at the point of intersection of the graphs.

the graphs intersect at (0, - 3 )

then solution is (0, - 3 )

6 0

3 years ago

Read 2 more answers

A certain type of thread is manufactured with a mean tensile strength of 78.3 kilograms and a standard deviation of 5.6 kilogram

azamat

Answer:

(a) The variance decreases.

(b) The variance increases.

Step-by-step explanation:

According to the Central Limit Theorem if we have a population with mean <em>μ</em> and standard deviation <em>σ</em> and we take appropriately huge random samples (<em>n</em> ≥ 30) from the population with replacement, then the distribution of the sample mean will be approximately normally distributed.

Then, the mean of the sample mean is given by,

$\mu_{\bar x}=\mu$

And the standard deviation of the sample mean is given by,

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}$

The standard deviation of sample mean is inversely proportional to the sample size, <em>n</em>.

So, if <em>n</em> increases then the standard deviation will decrease and vice-versa.

(a)

The sample size is increased from 64 to 196.

As mentioned above, if the sample size is increased then the standard deviation will decrease.

So, on increasing the value of <em>n</em> from 64 to 196, the standard deviation of the sample mean will decrease.

The standard deviation of the sample mean for <em>n</em> = 64 is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{5.6}{\sqrt{64}}=0.7$

The standard deviation of the sample mean for <em>n</em> = 196 is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{5.6}{\sqrt{196}}=0.4$

The standard deviation of the sample mean decreased from 0.7 to 0.4 when <em>n</em> is increased from 64 to 196.

Hence, the variance also decreases.

(b)

If the sample size is decreased then the standard deviation will increase.

So, on decreasing the value of <em>n</em> from 784 to 49, the standard deviation of the sample mean will increase.

The standard deviation of the sample mean for <em>n</em> = 784 is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{5.6}{\sqrt{784}}=0.2$

The standard deviation of the sample mean for <em>n</em> = 49 is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{5.6}{\sqrt{49}}=0.8$

The standard deviation of the sample mean increased from 0.2 to 0.8 when <em>n</em> is decreased from 784 to 49.

Hence, the variance also increases.

6 0

3 years ago

Find the value of the expression 3m2 2p2 − 15 when m = 3 and p = 10.

AnnZ [28]

I think you want to say the expression 3m2+2p2-15. The only thing you need to do is to replace the letter with the number. So the expression is 3*3^2+2*10^2-15=212.

7 0

4 years ago

HELP SOON PLEASE!!!!!!!

MissTica

Answer:

Right triangles:

5) 0.75, 1, 1.25

6) 18, 80,82

Not right triangles:

1) 5,5,√50

2) 6.5, 3.2, 7.8

3) √2, √3, 4

4) 12, 13, 20

Step-by-step explanation:

Right triangles: (for right triangles the Pythagorean theorem is true)

6) 18² + 80² = 82²

6724=6724

5) 0.75² + 1² = 1.25²

1.5625 =1.5625

Not right triangles:

1) 5² + 5² ≠(√50)²

1250≠ 50

2) 6.5² + 3.2² ≠ 7.8²

52.49≠60.84

3) (√2)² +(√3)² ≠ 4²

5≠ 16

4) 12² + 13² ≠ 20²

313 ≠ 400

5 0

3 years ago

Read 2 more answers