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3 years ago

31 POINTS!!!! I WILL MARK BRAINIEST AND AWARD POINTS, PLEASE PROVIDE WORK OR YOU WILL NOT BE QUALIFIED TO BE MARKED BRAINEST

Mathematics

2 answers:

ser-zykov [4K]3 years ago

6 0

Firstly the scattered point hare a positive correlation
Let's take 2 points on the graph, point A and point B (calculation will be approx)

A(19,41) and B(50, 76) [don't forget we are choosing the points with a certain approximation)

Slope = (76-41)/( 50-19), then slope m= 35/31 ≈ (1.12). Now let's find the equation y = mx +b, y = (1.12) x + b. To that end replace x and y by any of A or B, say A(19,41);
41 = 1.12(19) + b so b= 19.7
And the TREND LINE equatio become y = 1.12x + 19.7 , which looks very much as y = x + 20, so y=x + 20 is the line tat best represents the real trend line y ≈ 1.12 + 19.7

kondor19780726 [428]3 years ago

3 0

Here is the final answer:
y=x+20. Hope it help!

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PLEASEEE HELP !!

miss Akunina [59]

Answer: b+95+34=180, b+129=180, 51

Step-by-step explanation:

b+95+34=180 works because the angles add to form a straight angle.

From this, we can obtain b+129=180 by adding the two constants.

Subtracting 129 from both sides, we get b=51.

6 0

2 years ago

Lulu wants to get fit. She started with 50 laps a day and she intends to add 10 laps every week. Write a mathematical expression

vlabodo [156]

Answer: 10x + 50

Step-by-step explanation:

lets say that x is equal to the amount of weeks that she runs. She starts off the first week with 50

Then, since she is adding 10 every week, you would do 10x, or 10 times the amount of weeks that she runs.

Since you originally started with 50, you have to add the 50 to the 10x.

So you get...

For example

on week 2, if you plug in 2 to x you get

10(2) +50

20 + 50

70 laps after the second week

7 0

2 years ago

In the context of sampling plan, a comprehensive record of each individual in the population of interest is known as a ________.

Vitek1552 [10]

Answer:

The correct answer is Census

Step-by-step explanation:

According to the given scenario, the record for each and every individual with respect to the population who has the interest is known as the census. The census means the information received for each and every population member

Therefore as per the given situation, the term that should be used is census

5 0

3 years ago

Solve the system using elimination.<br><br> 2x + 3y = 17<br> x + 5y = 19

ale4655 [162]

$\left\{\begin{array}{ccc}2x+3y=17\\x+5y=19&|\text{multiply both sides by (-2)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}2x+3y=17\\-2x-10y=-38\end{array}\right}\qquad\text{add both sides of equations}\\.\qquad\qquad-7y=-21\qquad\text{divide both sides by (-7)}\\.\qquad\qquad \boxed{y=3}\\\\\\\text{Substitute the value of y to the second equation}\\\\x+5(3)=19\\\\x=15=19\qquad\text{subtract 15 from both sides}\\\\\boxed{x=4}\\\\Answer:\ x=4\ and\ y=3.$

5 0

3 years ago

Josie is training for a race the ratio of the number of minutes she wants to the number of miles she wants is 2043 she plans to

guajiro [1.7K]

Answer:

Josie takes 0.93 minutes to run 2 miles.

Step-by-step explanation:

We are given the following in the question:

Ratio:

Number of minutes: Number of miles = 20:43

Josie wants to run 2 miles. We have to find the number of minutes she need to run to maintain the ration.

Let x be the number of minutes Josie run.

This can be done in the following manner:

$\dfrac{20}{43} = \dfrac{x}{2}\\\\\Rightarrow x = \dfrac{20}{43}\times 2\\\\\Rightarrow x = 0.93$

Thus, Josie takes 0.93 minutes to run 2 miles.

8 0

3 years ago