Step-by-step explanation:
I don't know if this helps but there is an app call symbols which is free which maybe it can help you to grapgh.
This is an obtuse angle.
Obtuse is big and a show-off, acute is cute and shy and small. right angle is striaght angle up and right-down...
Answer:

Step-by-step explanation:

short explanation: 1) to add the 1st equation to the 2d; 2) to calculate the value of 'x', then to substitute x=13/5 into the 2d equation and calculate the value of 'y'.
8 apples were purchased.
4 oranges were purchased.
8 + 4 = 12
Answer:
Her unit rate remained the same
Step-by-step explanation:
80 is twice as much as 40. 5 minutes is twice as long as 2 1/2 minutes. Her unit rate never changed.