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SSSSS [86.1K]
1 year ago
12

Describing trends in scatter plots1The graph below shows the relationship between life expectancyand infant mortality rate in a

random sample of countries,Which statement is the best description of the associationbetween these variables?Choose 1 answerCountries with higher infant mortality rates tended to have longerlife expectanciesCountries with higher infant mortality rates tended to haveshorter life expectancies.There is no clear relationship between infant mortality rates andlife expectancyWhich statement is the best description of the association between these variables

Mathematics
1 answer:
rosijanka [135]1 year ago
5 0
Given

The graph of the infant mortality rate and life expectancy is given in the scatter form.

Explanation

To determine the relation between the life expectancy and infant mortality rate ,

use the given graph.

From the graph given, it is clear that as the infant mortality rate increases then the life expectancy decreases.

Therefore, the countries with high mortality rates tended to have shorter life expectancies.

Answer

Hence the correct option is B.

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7 0
3 years ago
The data below represent the ages of people working at a store.
Slav-nsk [51]

Answer:

The first step is sort the values on increasing order and we got:

18, 18, 19, 19, 19, 20, 22, 23. 25,  26, 31

And in order to find the first quartile we can separate the first 5 lowest values from the largest 5 values. And for this case we focus on these values:

18, 18, 19, 19, 19

And if we find the median of the last 5 values we can find the first quartile and we got:

Q_1 = 19

The best answer would be:

19

Step-by-step explanation:

For this problem we have the following dataset:

18, 26, 19, 25, 19, 23, 31, 22, 19, 18, 20

The first step is sort the values on increasing order and we got:

18, 18, 19, 19, 19, 20, 22, 23. 25,  26, 31

And in order to find the first quartile we can separate the first 5 lowest values from the largest 5 values. And for this case we focus on these values:

18, 18, 19, 19, 19

And if we find the median of the last 5 values we can find the first quartile and we got:

Q_1 = 19

The best answer would be:

19

4 0
4 years ago
A sequence has three terms the term to term rule for sequence is multiple by3 and then add 7 given that the first term of the se
olasank [31]

Answer:

Step-by-step explanation:

a₁ = -1

a₂ = 3a₁ + 7 = 3(-1)+7 = 4

a₃ = 3a₂ + 7 = 3·4+7 = 19

8 0
3 years ago
Lilia is saving money for dance lessons. She already has $10. Each week she is going to save $5. Write an equation, in slope-int
katrin [286]

The equation which represents the amount of money, y, that Lilia will save in x weeks is;

  • y =$5x + $10.

<h3>Slope-intercept form of linear equations</h3>

The slope-intercept form of linear equations usually takes the form;

  • y = mx + c

According to the information given;

  • Lilia already has $10.

Therefore, the y-intercept of the equation is; $10.

  • And since she saves $5 each week;

The slope of the equation is; $5.

By substitution, the required equation is;

  • y =$5x + $10.

Read more on slope-intercept form of equations;

brainly.com/question/1884491

4 0
2 years ago
How do you find the x and y intercepts of x^2+x-2/x^2-3x-4?
melomori [17]
First equal the equation to f(x) or y 

f(x)= (x²+x-2)÷(x²-3x-4) 

To find y-intercept, x coordinates have to be 0 

f(0)=(0²+0-2)÷(0²-3(0)-4) 
f(0)=-2/-4
f(0)=1/2 (y-intercept)

To find x-intercept, make y=0 

0=(x²+x-2)÷(x²-3x-4) 
0((x²-3x-4)=(x²+x-2) 
0=x²+x-2 
0=(x-1)(x+2) 
x-1

x-1=0 
x=1 

x+2=0 
x=-2 

The x-intercepts would be 1, -2 

Hope I helped :) 


3 0
3 years ago
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