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PilotLPTM [1.2K]
3 years ago
5

A river flows at the rate of 10 feet per minute. What is the rate in seconds per foot​?

Mathematics
1 answer:
kicyunya [14]3 years ago
7 0
The rate of change is 6 secs/foot in terms of seconds per foot. 
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Pls help me with this question
igor_vitrenko [27]

Answer:

D, C

Step-by-step explanation:

for part a, there is a negative slope with the graph shifted two units upwards

for part b, if you plug in C, you get an answer that works

8 0
2 years ago
Weinstein, McDermott, and Roediger report that students who were givne questions to be answered while studying new material had
emmainna [20.7K]
<h2>Answer with explanation:</h2>

Let \mu be the population mean.

By considering the given information , we have

Null hypothesis : H_0: \mu=73.4

Alternative hypothesis :  H_a: \mu>73.4

Since alternative hypothesis is right-tailed , so the test is a right-tailed test.

Given : Sample size : n=16 , which is a small sample , so we use t-test.

Sample mean: \overline{x}=78.3  ;

Standard deviation: s=8.4

Test statistic for population mean:

t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}

i.e. t=\dfrac{78.3-73.4}{\dfrac{8.4}{\sqrt{16}}}\approx2.333

Using the standard normal distribution table of t , we have

Critical value for \alpha=0.01 : t_{(n-1,\alpha)}=t_{(15,0.01)}=2.602

Since , the absolute value of t (2.333) is smaller than the critical value of t (2.602) , it means we do not have sufficient evidence to reject the null hypothesis.

Hence, we conclude that we do not have enough evidence to support the claim that answering questions while studying produce significantly higher exam scores.

3 0
3 years ago
How do I change my username because it is stuck on the email. I will give Brainliest.
Aleonysh [2.5K]

Answer:

Stated below:

Step-by-step explanation:

You can't change your Brainly username unless you want to make a new account.  

6 0
3 years ago
Read 2 more answers
Given f(x)= x + 6 and g(x) = 12X –7, what is f(x) + g(x)?
quester [9]
13x-1
Is the answer, you have to get all you terms that being x+6+12x-7
6-7=-1
X+12x=13x
Put them together with the Xs first
13x-1
5 0
3 years ago
7x-2y=-5which ordered pair is a solution of the equation
sashaice [31]

Answer:

What ordered pair my closest answer is y = 5/2+7x/2

Step-by-step explanation:

Subtract 7x from both sides of the equation.

3 0
3 years ago
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