(7x^2-3x)+4x^2
7x^2+4x^2-3x
11x^2-3x
Answer: 11x^2-3x.
You just combine like terms.
Looks like 7 games scored 73 or 74, 1 scored 75 or 76 and 1 scored 77 or 78, so
Answer: 9 games, second choice
Intersects a given segment at a 90 degree angle,and passes through the given segment's midpoint.
Given:
The triangle ABC is reflected over the x-axis.
The distance between point A and A’ is 14.
To find:
The distance between the x-axis and A’.
Solution:
If a figure is reflected across the x-axis then the corresponding parts are mirror image of each other about the x-axis.
It means the distance between A and x-axis is same as the distance between x-axis and A'.
The distance between point A and A’ is 14.
Let d be the distance between the x-axis and A’. Then,




Therefore, the correct option is 1.