1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Katyanochek1 [597]
2 years ago
12

The variables x and y have a proportional relationship, and y= 2/5 when x = 5/8

Mathematics
1 answer:
Archy [21]2 years ago
3 0

Answer:

B. 16/25 x is the answer

Step-by-step explanation:

lets find the proportional relationship,

y = kx

2/5 = k * 5/8

k = (2/5) /  (5/8)

k = 16/25

so if k, constant is 16/25

<u>equation is:</u>

<em>y = 16/25 x</em>

You might be interested in
Been struggling with this question can someone help?
Genrish500 [490]

Answer:

a and b

Step-by-step explanation:

............. ...... ..

4 0
2 years ago
Read 2 more answers
Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the results from other research
kolbaska11 [484]

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

Yes the researcher can  conclude that the supplement has a significant effect on cognitive skill

b

d =  0.5778

c

The result of this hypothesis test shows that there is sufficient evidence to  that the supplement had significant effect.The measure of effect size is  large due to the large value of Cohen's d (0.5778 > 0.30 )

Step-by-step explanation:

From the question we are told that

  The sample size is  n=16

    The sample mean is  M  =  50.2

    The standard deviation is \sigma  = 9

    The  population mean is  \mu =  45

     The level of significance is  \alpha =  0.05

The null hypothesis is H_o  \mu =45

The alternative hypothesis is H_a  \mu \ne 45

Generally the test statistics is mathematically represented as

          z =  \frac{M -  \mu}{\frac{\sigma}{\sqrt{n} } }

=>       z =  \frac{50.2 - 45}{\frac{9}{\sqrt{16} } }

=>       z =  2.31

Generally the p-value is mathematically represented as

     p-value  =  2 *  P(Z >  z )

      p-value  =  2 *  P(Z >  2.31 )

From the z-table  

      P(Z >  2.31 ) = 0.010444

=>     p-value  =  2 *  0.010444

=>     p-value  =  0.021

From the obtained values we see that p-value <  0.05

 Decision Rule

 Reject the null hypothesis

Conclusion

There is sufficient evidence to conclude that the supplement has a significant effect on the cognitive skill of elderly adults

Generally the Cohen's d for this study is mathematically represented as

    d =  \frac{M  -  \mu}{\sigma }

=>  d =  \frac{50.2 -45}{9 }

=>  d =  0.5778

3 0
3 years ago
What are the slope and the y-intercept of the linear function that is represented by the equation Y=9X-2?
Novosadov [1.4K]

Slope intercept form is

y = mx + b

where m is the slope and b is the y intercept.

Here we have

y = 9x - 2

so a slope of 9 and y intercept of -2

Answer: third choice


3 0
3 years ago
HELP ME please!<br><br><br> explain how to do also
kati45 [8]

Answer:

X = 103

Step-by-step explanation:

if a circle is 360

half would be 180

the angle is 77

so 180 - 77 = 103

7 0
2 years ago
Please help me with these it’s due TODAY!!!!! ( This is Simplifying expressions in 7th grade)
son4ous [18]
Picture won’t open for me... if you reply to this with the questions I can definitely help you.
5 0
2 years ago
Read 2 more answers
Other questions:
  • Prism A is similar to Prism B. The ratio of the surface area of Prism A to Prism B is 81:4. Find the volume ratio of Prism A to
    11·1 answer
  • David bought 30 shares of Amazon at the close price of $121.00. In a few years, David sells all of his shares at $143.50. How mu
    5·1 answer
  • What is an equation with more than one operation called
    5·1 answer
  • A male lion eats about 108 pounds of meat in a week about how much does it eat in a day
    15·1 answer
  • Finish multiplying<br> 10/3 ⋅11/12?
    8·2 answers
  • Which graph shows a set of ordered pairs that represents a function?
    11·1 answer
  • 20 x 10 3 but the 3 is small please i need this ...
    8·2 answers
  • Please help I need to pass :(
    7·1 answer
  • Write the equation of a line in slope-intercept form with the given slope that passes through the given point:
    14·1 answer
  • Guys please which one is the right answer
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!