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
Dahasolnce [82]
3 years ago
15

The equation y = kx represents a proportional relationship between x and y, where k is the constant of proportionality. For a mo

ving object, the equation d = st represents a proportional relationship between distance (d) and speed (s) or between distance (d) and time (t). Explain the different ways that you can define the constant of proportionality for this equation. Then describe some other equations that represent proportional relationships in the real world and explain why they’re useful
Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
7 0

Answer:

Step-by-step explanation:

for this equation

  d=st

we can represent s as d/t

we can represent t as d/s

and in real world we have a lot of this type of equations

some of them are,

 d=m/v  ( density = mass / volume )

 C = m.c  ( heat capacity = mass x specific heat )

You might be interested in
An educator claims that the average salary of substitute teachers in school districts is less than $60 per day. A random sample
valentina_108 [34]

Answer:

t=\frac{58.875-60}{\frac{5.083}{\sqrt{8}}}=-0.626    

The degrees of freedom are given by:

df=n-1=8-1=7  

The p value would be given by:

p_v =P(t_{(7)}  

Since the p value is higher than 0.1 we have enough evidence to FAIl to reject the null hypothesis and we can't conclude that the true mean is less than 60

Step-by-step explanation:

Information given

60, 56, 60, 55, 70, 55, 60, and 55.

We can calculate the mean and deviation with these formulas:

\bar X= \frac{\sum_{i=1}^n X_i}{n}

s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

Replacing we got:

\bar X=58.875 represent the mean

s=5.083 represent the sample standard deviation for the sample  

n=8 sample size  

\mu_o =60 represent the value that we want to test

\alpha=0.1 represent the significance level

t would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true mean is less than 60, the system of hypothesis would be:  

Null hypothesis:\mu \geq 60  

Alternative hypothesis:\mu < 60  

The statistic would be given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Replacing the info we got:

t=\frac{58.875-60}{\frac{5.083}{\sqrt{8}}}=-0.626    

The degrees of freedom are given by:

df=n-1=8-1=7  

The p value would be given by:

p_v =P(t_{(7)}  

Since the p value is higher than 0.1 we have enough evidence to FAIl to reject the null hypothesis and we can't conclude that the true mean is less than 60

3 0
3 years ago
PLS HELP ASAP THIS IS DUE IN 5 MINUTES
MA_775_DIABLO [31]

Answer:

A and B

Step-by-step explanation:

6 0
2 years ago
Evaluate the following expression
lina2011 [118]

Answer:

Hope this is correct

Step-by-step explanation:

HAVE A GOOD DAY!

6 0
3 years ago
Prove algebraically that the recurring decimal 0.35 (the 5 recurring) has the value <img src="https://tex.z-dn.net/?f=%5Cfrac%7B
DedPeter [7]

Answer:

Step-by-step explanation:

r10 = 3.555555555...

r100 = 35.55555555...

then, r100-r10 = 35.555... - 3.555...

r90= 32

to find r, divide both sides by90

which will give as ;

r = 32

------

90

4 0
2 years ago
10 points!!!!!?!!!! Tyrone wants to know how much wrapping paper is needed to cover a box with the dimensions shown
Leviafan [203]

Answer: B.54 Square inches

Step-by-step explanation:  Surface Area

= 2(lb + bh + lh)

= 2(6 x 3 + 3 x 1 + 6 x 1)

= 2(18 + 3 + 6)

= 2(27)

= 54 square inches

7 0
2 years ago
Other questions:
  • Un granjero vende 1/4 parte de su granja,dedica a la ganadería 1/8 parte y cultiva lo que queda,¿que parte de la granja cultiva?
    8·1 answer
  • Michael paid $11.48 for sliced cheese at the deli counter. The cheese cost $3.28 per pound. How much cheese did he buy?
    12·2 answers
  • Assume that you mow lawns. If you charge $8 per lawn and find 4 people to pay
    13·2 answers
  • Miguel and Grace started collecting rare coins at the same time. Back then, they had the same number of rare coins. Miguel has b
    7·1 answer
  • Help plz answer quick
    8·1 answer
  • An arithmetic sequence has the following properties:
    13·1 answer
  • Your uncle won the powerball jack[ot and decided to give you 50000 dollars. You want to save this money for college so you find
    13·1 answer
  • What is the slope of y=-4?
    13·2 answers
  • I'll put this as random but you can answer it... <br> ill give yall 10 points if yall do it!
    10·2 answers
  • Tim has read ​10% of a book. He has 45 more pages to finish. How many pages are there in the​ book?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!