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LuckyWell [14K]

3 years ago

11

A factory employee worked of an hour to finish of a project. At this rate, how many additional hours will the employee require t

o finish the project?
0.45
0.5
1.125
1.25
1.875

1 answer:

MakcuM [25]3 years ago

6 0

At hhisnsisusbusbyssbbsbsbsbsbsvsjisjdbbxixidbbiajabs bc xhhdbbzusjsbjzjdb

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Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a rando

Lisa [10]

Answer:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

Step-by-step explanation:

$m=\frac{S_{xy}}{S_{xx}}$

Σx = 77, Σy = 587, Σx2 = 1593, Σy2 = 70,533, and Σxy = 10040.

Where:

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}$

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}$

With these we can find the sums:

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=1593-\frac{77^2}{6}=604.833$

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=10040-\frac{77*587}{6}=2506.833$

And the slope would be:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

5 0

3 years ago

Question 2 In the fall, a community service club sold 10 shirts and 20 hats for a total of $490. In the spring, the club sold 20

Stells [14]

To answer the question above, we let s be the cost of a shirt and h be the cost of each hat such that the equations that would best represent the given are:
10s + 20h = 490
20s + 30h = 860
The system of equations is the answer to the first question and the values of s and h are $25 and $12, respectively.

8 0

4 years ago

Please Help!!!!! Extra points and brainiest will be given.

Whitepunk [10]

Answer:

The volume of the cylinder would be 226.19in however if you need it in terms of pi it would be V = 72 π in3

Step-by-step explanation:

V=πr2h=π·62·2≈226.19467, hope I was able to help you

And that is basically what you have to do

7 0

3 years ago

Read 2 more answers

Blank plus blank plus blank =30 you can only use 1 3 5 7 9 11 13 15

Molodets [167]

If you add only three odd numbers you get an odd answer. So you can't answer that without using more numbers.

5 0

4 years ago

Given that the length of the side of a right square-based prism is 5 inches, and its volume is 125 cubic inches, find its height

hram777 [196]

Answer:

A. 5 in.

Step-by-step explanation:

A <em>square</em><em> </em><em>prism</em><em> </em>is another name for <em>cube</em><em>,</em><em> </em>and all vertices, edges, and faces are congruent, so this is an automatic giveaway.

I am joyous to assist you anytime.

5 0

4 years ago