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igor_vitrenko [27]
3 years ago
9

ohn is driving around town. When he reaches the gas station, he notes that he has traveled 20 miles. He reaches home 2 hours lat

er and notes that he has traveled 35 miles. If d represents the distance and t represents the time, in hours, John has traveled since the gas station, which of the following equations can be used to model this situation?
Mathematics
1 answer:
lyudmila [28]3 years ago
3 0

Answer:

what are the equations?

Step-by-step explanation:

If you tell me what they are, I can change it and tell you the answer is.

I don't see the equations. :(

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A biologist was interested in determining whether sunflower seedlings treated with and an extract from Vinca minor roots resulte
Aleksandr-060686 [28]

Answer:

Kindly check explanation

Step-by-step explanation:

H0 : μ = 15.7

H1 : μ < 15.7

This is a one sample t test :

Test statistic = (xbar - μ) ÷ (s/√(n))

n = sample size = 33

Using calculator :

The sample mean, xbar = 15.41

The sample standard deviation, s = 0.419

Test statistic = (15.41 - 15.70) ÷ (0.419/√(33))

Test statistic = - 3.976

Using the Pvalue calculator :

Degree of freedom, df = n - 1 ; 33 - 1 = 32

Pvalue(-3.976, 32) = 0.000187

Decison region :

Reject H0 if Pvalue < α

Since Pvalue < α ; we reject H0

There is significant evidence to conclude that the true average height of the seedlings treated with an extract from Vinca minor roots is less than 15.7 cm.

4 0
2 years ago
I want to know how to solve this equation
Sphinxa [80]

Answer:

one property of log is that if the log expressions have the same base (in this case, 2), then you can multiply the added logs.

The answer would then be D

3 0
3 years ago
What is the solution to the inequality?
Lilit [14]
The answer would be x>-3
6 0
3 years ago
Can someone help me with this? I will mark you as brainliest
Tresset [83]

Answer:

1372$

Step-by-step explanation:

the  price =15600+20/100*15600=15600*120/100=18720

18720-5000=13720 $

13720:10=1372 $

8 0
3 years ago
Which phrase is the best description of the association between variables X and Y?
Elodia [21]
The variables have a negative association/correlation, because when one value increases (ex: x) the other decreases (see y)
If you would put a line through the dataset most of the points would be quite a bit off the line so the association is only moderate and not strong

so the answer is it is a "moderate negative association"
3 0
3 years ago
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