9514 1404 393
Answer:
Step-by-step explanation:
The midpoint formula is useful here. For midpoint M, we have ...
M = (C + D)/2
2M = C + D
2(10, 10) = (15, s) +(t, 3)
(20, 20) = (15+t, s+3)
t = 20 -15 = 5
s = 20 -3 = 17
__
<em>Check</em>
(C +D)/2 = ((15, 17) +(5, 3))/2 = (20, 20)/2 = (10, 10) . . . checks OK
The experiment described is an example of matched pairs because it is going to compare the reaction of drivers at two different volume levels.
<h3>What is the matched pairs type of experiment about?
</h3>
Matched pairs are a type of experiment that puts one or more individuals in two different situations to compare the results and draw a conclusion regarding this reaction.
According to the above, the situation described is an example of matched pairs because it requires the driver to respond to obstacles by listening to music at two different volume levels and in this respect their results are compared to establish whether the volume affects their performance reaction speed.
Learn more about experiments in: brainly.com/question/9199868
Answer:
Step-by-step explanation:
Answer:
The two numbers are
4
and
6
.
Explanation:
Let one number be represented as
x
and the other as
y
.
According to the problem:
x
=
2
3
y
and
x
+
y
=
10
From the second equation we get:
x
+
y
=
10
∴
y
=
10
−
x
(subtracting
x
from both sides)
Replacing the value of
y
in the first equation we get:
x
=
2
3
y
x
=
2
3
(
10
−
x
)
Multiplying both sides by
3
we get:
3
x
=
2
(
10
−
x
)
Opening the brackets and simplifying we get:
3
x
=
20
−
2
x
Add
2
x
to both sides.
5
x
=
20
Divide both sides by
5
.
x
=
4
Since from the second equation we have:
x
+
y
=
10
substituting
x
with
4
we get:
4
+
y
=
10
Subtract
4
from both sides.
y
=
6
Subtract 89 from -42. k=-131
11% right? ‘Cause all you have to do is subtract all those numbers from 100