You're correct with the answer you have selected. It's 7.2 x 10^7
(1) Option B: –10
(2) Option A: –3
Solution:
(1) Given expression is 37 + n.
To evaluate the value of the expression when n = –47.
Substitute n = –47 in the given expression.
37 + n = 37 + (–47)
Since positive of a negative number is negative.
37 + n = 37 – 47
Subtract 37 from 47 and put the greater number sign for the answer.
37 + n = –10
Option B is the correct answer.
Hence 37 + n = –10.
(2) Given expression is p – q.
To find the the value of the expression when p = –37 and q = –34
p – q = (–37) – (–34)
Since negative of a negative number is positive.
p – q = (–37) + 34
Subtract 34 from 37 and put the greater number sign for the answer.
p – q = –3
Option A is the correct answer.
Hence p – q = –3.
The second one is the right answer
Answer:
a. (x = 1, y = -1, z = 1)
I don’t really understand what you mean?
