Answer: R=8
Step-by-step explanation: R-7=1, R+7=1+7, R=8.
Three values that would make this true:
5
4
3
Because she cut off a total of 4 inches, the plank is now 133 inches long. Divide 133 by 7 to get her 7 equal parts, and <u>each shelf will be 19 inches.</u>
The correct answer is B) AC = BC
We know this because the two triangles are equal due to SAS