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3 years ago

-35+7k = -7+7(k-4) is it IMS (Infinite solutions)one solutionno solution?

Mathematics

2 answers:

vova2212 [387]3 years ago

7 0

Answer:

<h2>-35+7k=-7+7 (k-4)</h2><h2>-42=-14 (k-4).</h2><h2>This the simplest way to simply the work.</h2>

Aleks04 [339]3 years ago

4 0

Answer:

Pretty sure it is infinite solution

Step-by-step explanation:

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NeTakaya

the mean of each park in cityA: is 7.5

the mean of each park in cityB: is 7.3

what i did to find the mean is that i added up all of the numbers of acres of parks in each city then divided by ten the reason i divided by ten is because there is ten numbers in each list of acres.

the range of the numbers of acres for the parks is 10

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3 years ago

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A manufacturer allows a discount of 30% on the list of prices of goods bought by wholesalers. Calculate the discount allowed on

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a) 10 percent of 800,000 is 80,000

80,000*3=240,000

They will allow a discount of 240,000, making the price 560,000.

b) 10 percent of 1,000,000 is 100,000

100,000*3=300,000

They will allow a discount of 300,000, making the price, 700,000.

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3 years ago

What adds to get 12 and multiply to 45

bixtya [17]

The answer is 3 and 15

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Triangle ABC has coordinates A(1,-1), B(0,2), and C(2,1) and it is reflected over the line y = x to form triangle A'B'C'. What a

liberstina [14]

Answer:

The coordinates of triangle A'B'C' are A' (-1 , 1) , B' (2 , 0) , C' (1 , 2)

Step-by-step explanation:

* Lets revise some transformation

- If point (x , y) reflected across the x-axis

∴ Its image is (x , -y)

- If point (x , y) reflected across the y-axis

∴ Its image is (-x , y)

- If point (x , y) reflected across the line y = x

∴ Its image is (y , x)

- If point (x , y) reflected across the line y = -x

∴ Its image is (-y , -x)

* Lets solve the problem

- ABC is a triangle, where A = (1 , -1) , B = (0 , 2) , C = (2 , 1)

- The Δ ABC reflected over the line y = x to form ΔA'B'C'

∵ The image of the point (x , y) after reflected across the line y = x

is (y , x)

∴ We will switch the coordinates of each point in Δ ABC to find the

coordinates of Δ A'B'C'

# Vertex A

∵ A = (1 , -1) ⇒ x = 1 , y = -1

∴ The x-coordinate of the image is -1

∴ The y-coordinate of the image is 1

∴ A' = (-1 , 1)

# Vertex B

∵ B = (0 , 2) ⇒ x = 0 , y = 2

∴ The x-coordinate of the image is 2

∴ The y-coordinate of the image is 0

∴ B' = (2 , 0)

# vertex C

∵ C = (2 , 1) ⇒ x = 2 , y = 1

∴ The x-coordinate of the image is 1

∴ The y-coordinate of the image is 2

∴ C' = (1 , 2)

* The coordinates of triangle A'B'C' are A' (-1 , 1) , B' (2 , 0) , C' (1 , 2)

8 0

4 years ago

Older people often have a hard time finding work. AARP reported on the number of weeks it takes a worker aged 55 plus to find a

Norma-Jean [14]

Answer:

Step-by-step explanation:

Hello!

Be the variable of interest:

X: Number of weeks it takes a worker aged 55 plus to find a job

Sample average X[bar]= 22 weeks

Sample standard deviation S= 11.89 weeks

Sample size n= 40

The point estimate of the population mean is the sample mean

X[bar]= 22 weeks

It takes on average 22 weeks for a worker aged 55 plus to find a job.

To estimate the population mean using a confidence interval, assuming the variable has a normal distribution is

X[bar] ± $t_{n_1; 1-\alpha /2}$ * $\frac{S}{\sqrt{n} }$

$t_{n-1; 1-\alpha /2}= t_{39; 0.975}= 2.023$

The structure of the interval is "point estimate" ± "margin of error"

d= $t_{n_1; 1-\alpha /2}$ * $\frac{S}{\sqrt{n} }$ = 2.023* $(\frac{11.89}{\sqrt{40} })$ = 3.803

The interval can be calculated as:

[22 ± 3.803]

[18.197; 25.803]

Using s 95% confidence level, you'd expect the population mean of the time it takes a worker 55 plus to find a job will be within the interval [18.197; 25.803] weeks.

Job Search Time (Weeks)

21 , 14, 51, 16, 17, 14, 16, 12, 48, 0, 27, 17, 32, 24, 12, 10, 52, 21, 26, 14, 13, 24, 19 , 28 , 26 , 26, 10, 21, 44, 36, 22, 39, 17, 17, 10, 19, 16, 22, 5, 22

To study the form of the distribution I've used the raw data to create a histogram of the distribution. See attachment.

As you can see in the histogram the distribution grows gradually and then it falls abruptly. The distribution is right skewed.

3 0

4 years ago

-35+7k = -7+7(k-4) is it IMS (Infinite solutions)one solutionno solution?​

-35+7k = -7+7(k-4) is it IMS (Infinite solutions)one solutionno solution?