You will need to subtract 3x from 5x, then since there is a minus sign in front of the 7 it will count as a -7, so u add 7 cross it out and then add 7 to the -4(which is also negative cause it has a minus sign in front) and then you have ur answer
5x-3x=2x
7+ -4= 3
Answer: 2x-3
Answer:
2n-3
Step-by-step explanation:
n represents the number of hours Darcy practices.
The number of hours Hannah practices each week is 3 hours less than twice the number of hours Darcy practices.
Twice the number of hours Darcy practices is 2n.
Hannah practices for : 2n-3
Hence, the expression that represents the number of hours Hannah practices is "2n-3".
In order to answer this one, it's really really really really helpful if you know what the law of cosines says. In fact it's absolutely necessary.
The law of cosines says if you know two sides of a triangle and the angle between them then you can use that information to find the length of the third side.
In the picture you know the lengths of two sides and you know the angle between them. So you can use the law of cosines to find the length of the third sidethat. That's side AC.
Answer:
Both
Step-by-step explanation:
You wrote the same thing.
