Which of the following terms can be combined in this expression?

13 minus StartFraction x over 5 EndFraction + 6.2 y + 20.5 x minus StartFraction 3 over 8 EndFraction y
Negative 13 can be combined with 20.5.
6.2 y can be combined with 20.5 x.
6.2 y can be combined with Negative StartFraction 3 over 8 EndFraction y.
Negative StartFraction x over 5 EndFraction can be combined with Negative StartFraction 3 over 8 EndFraction y.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

what are you doing do you need examples of variable questions?

step-by-step explanation:

5a-1=9               bring the one over the =

5a=10                     divide by your variable

a=2

brainliest? ?

here try this one

3a-24=0