Answer:
6
Step-by-step explanation:
if you take the number of paws minus the number of noses you get your answer so if you take
24 - 6 ( noses) =18
(4paws x6 lions= 24)
so the number of lions is 6
Answer:
The study is an experiment.
Step-by-step explanation:
From the information provided, Eighth-grade students are randomly divided into two groups.
==> The first group is taught English using traditional techniques.
==> The second group is taught English using a reform method.
The main goal is to compare the proficiency in English of the two groups. This is purely an experimental study. In this case, human experiment.
The experimental tools is the English techniques being served or taught and the experimental units are the Eighth-grade students which were grouped into 2 groups and served different techniques.
At the end of the study, the researchers wish to know the most effective or efficient method of teaching English to gain excellent proficiency of the language. They should be able to know whether Traditional techniques is better than the Reform method or vice versa.
<span>y = sqrt(25-x^2) at point (3,4)
The derivative gives us the slope at 3 to be:
-2x
------------ at x=3: -3/4
2sqrt(25-x^2)
</span><span>so we have a vector that is parallel to the slope of the tangent line is: <4,-3>
</span>
<span>the mag = 5 so; unit tangent = <4/5 , -3/5>
</span>
<span>since perpendicular lines have a -1 product between slopes we get the normal to be...
<3/5,4/5>
</span>
<span>It is <4,-3> because it is rise over run. Rise is y component of vector and run is x component of vector.</span>
<span>==> 6(15+x) = 120
==> 15+x = 20
==> x = 5.
Therefore five new workers joined the crew.</span>
