Answer: x= 1
Step-by-step explanation: Look at pic down below.
answer is 9
Change the sign of the exponent by rewriting the base as its reciprocal
3^2
raise 3 to the power of 2
you get 9
The upstream speed is 4 km/hour and the down stream speed is 6 km/hour
<h3>Calculating Speed </h3>
From the question, we are to calculate the speed of each stream
From the given information,
"<em>Rahul rows 16 km upstream and 24 km down stream taking 4 hours each</em>"
For the Upstream,
Distance = 16 km
Time = 4 hours
Using the formula,
Speed = Distance/ Time
Speed = 16 km / 4 hours
Speed = 4 km/hour
For the Down stream,
Distance = 24 km
Time = 4 hours
Thus,
Speed = 24 km / 4 hours
Speed = 6 km/hour
Hence, the upstream speed is 4 km/hour and the down stream speed is 6 km/hour
Learn more on Calculating Speed here: brainly.com/question/24571540
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The last option c is right because each book selected represents the sample from the population of full library books.
We have given that,
Sahira chooses a random sample from the library and records the type of books in the chart below.
Type of Book Number
Fantasy 10
Literature 25
Children’s 4
Nonfiction 11
t, showing the distribution of the number of books in a library.
Also given that Sahira chooses a random sample from the library and records the type of books in the chart below.
Sahira's sample can be said to be representative because given that books are taken at random.
So just because books literature more we cannot say it is not representative II option is not right, because each book was not chosen uniquely, just random books were drawn.
<h3>
What is the population?</h3>
A population is defined as a group of individuals of the same species living and interbreeding within a given area. Members of a population often rely on the same resources, are subject to similar environmental constraints, and depend on the availability of other members to persist over time.
The last option c is right because each book selected represents the sample from the population of full library books.
To learn more about the population visit:
brainly.com/question/27883697
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2/4 and 1/2
5/10 and 1/2
1/3 and 2/6
40/90 and 4/9
