If 
A
=
⎡
⎢
⎣
−
3
1
−
2
4
5
−
1
⎤
⎥
⎦
A
=
[
-
3
1
-
2
4
5
-
1

]
and 
B
=
⎡
⎢
⎣
4
−
3
0
−
2
−
2
4
⎤
⎥
⎦
B
=
[
4
-
3
0
-
2
-
2
4

]
then what is 
3
A
−
2
B
?
3
A
-
2
B
?

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

coin flip

non-answer:

choosing

sorry if this isnt what you're looking for i dont really understand the question

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3