Answer:
B. 4
Step-by-step explanation:
Interval: 19-21
Scores that are between 19 and 21 are underlined:
Scores in order: <u>20, 21, 21, 21</u>, 23, 25, 26, 27, 27, 29
Answer:
a)
for every n>3
b)
Step-by-step explanation:
a)
From the definition of the relation we see that
R(1) = 1, R(2) = 1, R(3) = 2 and R(4) = 3
is the composite relation
Let's compute it
so
is computed in a similar way,
So we have
And
From here we see that
for every n>3
b)
We must look for the missing elements that would make R transitive, and those elements are
Answer:
<h2>x = 10√3</h2>
<u>Step-by-step explanation:</u>
cos 45° = base / hypotenuse
1/√2 = base / 15√2
15√2 = base√2
Base, = 15
sin 60° = perpendicular / hypotenuse
hypotenuse = x
√3/2 = 15 / x
x √3 = 30
x = 30 / √3
x = 10√3
1. x.x=7.7 (nhân chéo)
<=>x^2 = 49
<=>x = 7
2. x= 31/40
I did this using the method of substitute the answer is the first one (5/7, 12/7)
My work is in the picture below