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3 years ago

What formula should I use for this?

Mathematics

1 answer:

mr_godi [17]3 years ago

8 0

If they're asking for the nth term, you should use n in your formula, ie.,

a(n) = 6000 * 0.5ⁿ

However, the first term is when n=1, so your formula should really be:

a(n) = 6000 * 0.5⁽ⁿ⁻¹⁾

Then the 8th term is 46.875

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Which is the least value 2.65, 2 4/5 or 2 3/4?

satela [25.4K]

2 4/5 I believe is the least value.

5 0

3 years ago

John lost 1.44 kilograms after a week of exercise. One kilogram is equal to approximately 2.2 pounds. How many pounds did John l

uranmaximum [27]

Answer:

Step-by-step explanation:

1.44x2.2=3.168 pounds

7 0

3 years ago

The population of medfield is 7000 Capitol City's population is 8/25 of Medfields what is capitol city's population

Dmitry_Shevchenko [17]

8/25 of medfield....." of " means multiply

8/25(7000) = 56,000/25 = 2240 <== capital city's population

5 0

3 years ago

Here are summary statistics for randomly selected weights of newborn girls: n=185,

Anna11 [10]

Answer:

The confidence interval for the population mean μ is $32.487$

Step-by-step explanation:

Given :

Number of weights of newborn girls n=185.

Mean $\bar{x}=31.4$ hg

Standard deviation s=7.5 hg

Use a 95% confidence level i.e. cl=0.95

To find : What is the confidence interval for the population mean μ?

Solution :

Using t-distribution,

The degree of freedom $DF=n-1=185-1=184$

$\alpha=\frac{1-0.95}{2}$

$\alpha=0.025$

The t critical value is t=1.973.

The confidence interval build is

$CI=\bar{x}\pm(t\cdot \frac{s}{\sqrt{n}})$

Substitute the values,

$CI=31.4\pm(1.973\cdot \frac{7.5}{\sqrt{185}})$

$CI=31.4\pm(1.973\cdot 0.5514)$

$CI=31.4\pm(1.087)$

$31.4+1.087$

$32.487$

Therefore, the confidence interval for the population mean μ is $32.487$

6 0

3 years ago

You are asked to tutor a friend in algebra with adding and subtracting trinomials. Create an example of how to add two trinomial

vesna_86 [32]

Addign trinomials (2x+4xy+8z)+(8x+5xy+23z) all you have to do is combine the like terms 2x and 8x= 10x, 4xy+5xy=9xy, and 8z+23z=31z. so the simplified answer to adding the trinomials would be 10x+9xy+31z.

Subtacting trinomials (4x+9y+3) - (-1+3x-2y) .
When doing subtracting you still combine like terms but this time you change the sign before every term. If that is confusing, just pretend there is a negative 1 infront of parenthases and multiply that before you subtracts the two trinomials. so...
4x - 3x= x, 9y+2y=11y and 3+1=4. so simplified answer of the subtraction would be x+11y+4

I hope this helped :) Good luck !

4 0

3 years ago