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2 years ago

Check #4, explain. i need answers.

Mathematics

1 answer:

ra1l [238]2 years ago

3 0

It may be misleading because it only tells you those two years, not what happened between those years

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PLEASE HELP!!!!!

Katena32 [7]

Answer:6018

Step-by-step explanation:

Given Sequence

$-282-266-250-234.....$

It represent an A.P. with

first term $a=-282$

common difference $d=16$

So sum of 51 term

$S_n=\frac{n}{2}[2a+(n-1)d]$

$S_{51}=\frac{51}{2}\times [2\times (-282)+(51-1)16]$

$S_{51}=\frac{51}{2}\times [-564+800]$

$S_{51}=\frac{51}{2}\times [236]$

$S_{51}=51\times 118$

$S_{51}=6018$

7 0

2 years ago

A pack of oranges weight 7.4kg . how much is that in grams

const2013 [10]

<h2>Answer: </h2>

formula = Multiply mass with 1000.

weight of a pack of oranges = 7.4 kg

weight of the pack of oranges in grams = 7.4 x 1000 = 7,400g

<h2><u>Weight of the pack of oranges in grams is 7,400g</u></h2>

5 0

1 year ago

Read 2 more answers

How do I explain the steps to the question involving the pie?

jok3333 [9.3K]

Answer:

Area = pi x radius squared

the radius is 2.39 so that's squared that is 5.7121pi

Step-by-step explanation:

4 0

2 years ago

According to Scarborough Research, more than 85% of working adults commute by car. Of all U.S. cities, Washington, D.C., and New

tamaranim1 [39]

Answer:

The 99% confidence interval for the mean commute time of all commuters in Washington D.C. area is (22.35, 33.59).

Step-by-step explanation:

The (1 - <em>α</em>) % confidence interval for population mean (<em>μ</em>) is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

Here the population standard deviation (σ) is not provided. So the confidence interval would be computed using the <em>t</em>-distribution.

The (1 - <em>α</em>) % confidence interval for population mean (<em>μ</em>) using the <em>t</em>-distribution is:

$CI=\bar x\pm t_{\alpha /2,(n-1)}\frac{s}{\sqrt{n}}$

Given:

$\bar x=27.97\\s=10.04\\n=25\\t_{\alpha /2, (n-1)}=t_{0.01/2, (25-1)}=t_{0.005, 24}=2.797$

*Use the <em>t</em>-table for the critical value.

Compute the 99% confidence interval as follows:

$CI=27.97\pm 2.797\times\frac{10.04}{\sqrt{25}}\\=27.97\pm5.616\\=(22.354, 33.586)\\\approx(22.35, 33.59)$

Thus, the 99% confidence interval for the mean commute time of all commuters in Washington D.C. area is (22.35, 33.59).

8 0

2 years ago

Amelia makes $8 per hour at her job and then earns an additional $15 for every tablet she sells. She uses the expression 8h + 15

vivado [14]

The 8h stands for how much she makes an hour the 15t is how much she makes per tablet she sells. two terms in the expression, h and t, because you are solving for them. t for part c

3 0

2 years ago