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
NeTakaya
3 years ago
14

A student is running a 3-kilometer race. He runs 1 kilometer every 2 minutes. Select the function that describes his distance fr

om the finish line after x minutes
A. f(x) = − 1/3x + 2
B. f(x) = − 1/2x + 3
C. f(x) = 1/2x + 3
D. f(x) = 1/3x + 2
Mathematics
2 answers:
larisa86 [58]3 years ago
6 0
To answer your question the best option would be B. I hope this helps you out :D
snow_lady [41]3 years ago
4 0
The answer to this question is B
You might be interested in
3. Francis has an unpaid balance of $480 on his credit card.
GarryVolchara [31]

Answer:

4 dollars 80 cents

Step-by-step explanation:

if annual is 12%, find monthly, 12/12=1

monthly rate is 1%

convert to decimal

0.01

480*0.01

4.8

6 0
3 years ago
The one i chose is wrong i think help.
const2013 [10]

Answer:

You are correct

Step-by-step explanation:

collinear means that they are on the same line, so they are collinear because of the definition of collinear

7 0
3 years ago
The paint used to make lines on roads must reflect enough light to be clearly visible at night. Let µ denote the true average re
Zolol [24]

Answer:

a) df=n-1=16-1=15

The statistic calculated is given by t=3.3  

Since is a one-side upper test the p value would be:      

p_v =P(t_{15}>3.3)=0.0024  

So since the p value is lower than the significance level pv we reject the null hypothesis.

b) df=n-1=8-1=7

The statistic calculated is given by t=1.8  

Since is a one-side upper test the p value would be:      

p_v =P(t_{7}>1.8)=0.057  

So since the p value is higher than the significance level pv>\alpha we FAIL to reject the null hypothesis.

c) df=n-1=26-1=25

The statistic calculated is given by t=-0.6  

Since is a one-side upper test the p value would be:      

p_v =P(t_{25}>-0.6)=0.723  

So since the p value is higher than the significance level pv>\alpha we FAIL to reject the null hypothesis.

Step-by-step explanation:

1) Data given and notation      

\bar X represent the sample mean

s represent the standard deviation for the sample

n sample size      

\mu_o =20 represent the value that we want to test    

\alpha represent the significance level for the hypothesis test.    

t would represent the statistic (variable of interest)      

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.      

We need to conduct a hypothesis in order to determine if the true mean is higher than 20, the system of hypothesis would be:      

Null hypothesis:\mu \leq 20      

Alternative hypothesis:\mu > 20      

We don't know the population deviation, so for this case is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:      

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

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

(a) n = 16, t = 3.3, a = 0.05, P-value =

First we need to calculate the degrees of freedom given by:  

df=n-1=16-1=15

The statistic calculated is given by t=3.3  

Since is a one-side upper test the p value would be:      

p_v =P(t_{15}>3.3)=0.0024  

So since the p value is lower than the significance level pv we reject the null hypothesis.

(b) n = 8, t = 1.8, a = 0.01, P-value =

First we need to calculate the degrees of freedom given by:  

df=n-1=8-1=7

The statistic calculated is given by t=1.8  

Since is a one-side upper test the p value would be:      

p_v =P(t_{7}>1.8)=0.057  

So since the p value is higher than the significance level pv>\alpha we FAIL to reject the null hypothesis.

(c) n = 26,t = -0.6, P-value =

 First we need to calculate the degrees of freedom given by:  

df=n-1=26-1=25

The statistic calculated is given by t=-0.6  

Since is a one-side upper test the p value would be:      

p_v =P(t_{25}>-0.6)=0.723  

So since the p value is higher than the significance level pv>\alpha we FAIL to reject the null hypothesis.

3 0
3 years ago
In the table, hoe many cups of flour would you need to make 90 cookies? Graph the relationship below
-Dominant- [34]
Not sure what we need to do for this question, as it appears that you have already completed it, but looking over your answer, the graphed relationship looks correct! And it would take 3 cups of flour to make 90 cookies, as per the table.
3 0
3 years ago
[50 POINTS] WILL MARK BRAINLIEST!!! Please solve the whole page with work!! It will be very much appreciated and I will heart th
Gre4nikov [31]

Answer:

wait, it only 25 points...

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Can you please help me​
    11·1 answer
  • A complicated mechanical system contains 8 components. If there is a 18% chance that each component will fail during processing,
    9·1 answer
  • What is the value of 8x135
    11·2 answers
  • Which graph might represent a polynomial function of degree 5 with a negative leading coefficient?
    7·1 answer
  • What is -3y-y equal to
    6·2 answers
  • Henry is making a recipe for biscuits.A recipe calls for 5/10 kilogram flour and 9/10 kilogram sugar.If henry measures correctly
    10·1 answer
  • A bookstore is deciding what price it should charge for a certain book. After research, the store finds that if the book's price
    10·1 answer
  • A solid object is made up of two cubes resting side by side. One cube has an edge length of 5.3 ft, and the other cube has an ed
    5·1 answer
  • The table shows data from a survey about the number of times families eat at restaurants during a week. The families are either
    8·2 answers
  • Solve the following surd given below <br>(1-√5)÷(1+√5)​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!