ANSWER
The correct answer is
EXPLANATION
The expression given to us is,
We plug in
. That means we substitute 12 wherever we see x to obtain,
We simplify the parenthesis first to obtain,
Hence the expression evaluates to
Answer:
x > 4
Step-by-step explanation:
4x + 3 > 19
4x + 3 - 3 > 19 - 3
4x > 16
4x/4 > 16/4
x > 4
Hope this helps.
He should have subtracted the discount and added the sales tax
10. B
11. D
12. C
13. B
14. B
15. D
Hello!
Since we are given that the speed of sound in the air travels about 343 meters per second, we can multiply 343 meters per second by 5, and then we convert the meters to kilometers.
343 · 5 = 1715 meters per 5 seconds.
1000 meters are equal to 1 kilometer. So, we can divide 1715 by 1000 to convert meters to kilometers.
1715 / 1000 = 1.715
Therefore, the speed of sound in air is about 1.715 kilometers per 5 seconds.
