Answer:

Step-by-step explanation:
we have

step 1
Exchange the variables (x for y and y for x)
so

Isolate the variable y
step 2

subtract 3 both sides

step 3
square root both sides

step 4
Adds 2 both sides

step 5
Let


Answer:
a=25
angle abq=139 degrees
bcr=41
Step-by-step explanation:
(2a-9)+(5a+14)=180
7a+5=180
7a=175
a=25
2(25)-9=41
180-41=139
angle abq=139 degrees
bcr=41
Answer:
2 feet
Step-by-step explanation:
i hope this is correct :)
Answer:

Step-by-step explanation:
If you reverse the distributive property you would get something like this. You can double check if you want.