Answer:

Step-by-step explanation:
This can be simplified by combing like terms.
8x^2 and 15x^2 are like terms. Since both numbers are positive, we add them together.
The sum of 8x^2 and 15x^2 is 23x^2
I hope this helps.
Answer:
Step-by-step explanation:
3x + 3x + 5 + 5 = 6x + 10
Answer:

Step-by-step explanation:
Midpoint of a segment with the given endpoints
and
is defined by,

In this question endpoints of the segment are,
and 
Coordinates of the midpoint will be,

= 
Therefore, coordinates of the midpoint are
.
X= log 53/log 3
Decimal form: 3.613915