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scZoUnD [109]
3 years ago
10

Rectangle RSTU is similar to rectangle WXYZ. Rectangle RSTU has a length of 6 units and a perimeter of 18 units. Rectangle WXYZ

has a length of 12 units. What is the perimeter of rectangle WXYZ? A. 18 units C. 36 units B. 24 units D. 72 units
Mathematics
1 answer:
tigry1 [53]3 years ago
4 0

Answer: 36 units, i don't know how to explain it but that's the answer.

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Use the formula to evaluate the series 1+2+4+8 .....+a10
Luden [163]

Answer:

1023

Step-by-step explanation:

The formula is

S_n =  \frac{a(1 -  {r}^{n}) }{1 - r}

The given series is:

1 + 2 + 4 + 8 + ... + a_{10}

where the first term is a=1 and the common ratio is

r =  \frac{2}{1}  = 2

We plug in all these values to get:

S_{10} =  \frac{1(1 -  {2}^{10}) }{1 - 2}

S_{10} =  \frac{1 - 1024}{ - 1}  = 1023

3 0
3 years ago
I need help please just explain
Anna11 [10]
You would have to divide each number
4 0
3 years ago
1. In the file MajorSalary.xlsx, data have been collected from 111 College of Business graduates on their monthly starting salar
lara31 [8.8K]

Solution :

a.The table below shows the different distribution of the students in differnt majors :

Subjects        No. of graduates

Accounting          28

Finance               21

Management       24

Info System         16

Marketing            22

Therefore, "accounting" have the maximum number of graduates.

b. The average monthly salaries of the graduates from some of the different majors are :

Subjects                    Average salary                Overall salary

Finance                          699                                 77595

Accounting                    1014                               112560

Info Sys                          577                                 64000

Marketing                        663                                 73590

Management                  688                                  76320

Therefore, the "Accounting" group have the highest average salary.

c. The "info System" has the lowest overall salary.

2.b. The data showing is more or less the linear relationship between the "Annual Expenses" and the "Weekly usage", therefore initially, we fit the linear regression equation of the form.

$AE = a+b \times(WU)$

The ordinary least square estimates are $\hat{a} = 10.528 \text{ and} \ \hat{b} = 0.9534

So, $AE = 10.528+0.9534 \times(WU)$

c. The amount of the variation the estimated model explains for the entire variation is given by the measure of

$R^2 = \frac{\text{variance of fitted observation}}{\text{variance in original data}}$

    = 0.856

It shows the linear regression that explains the good amount of entire variability of the annual expenses. It also supports the assumption of the "Linear Model".

a. The Scatter plot is attached below.

3 0
3 years ago
What percent equals 5/7
Galina-37 [17]
The answer isn’t a pretty one: 71.428571%
8 0
3 years ago
Read 2 more answers
A principal was buying T-shirts for his school's math club and found that the total cost
alexgriva [62]

Answer: B, makes the most sence

Step-by-step explanation:

5 0
3 years ago
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