Answer:
43
Step-by-step explanation: Ive took the test :)
Answer:
i don't know sorry...........
Answer: 35 degrees
Step-by-step explanation:
A triangle always adds up to 180 degrees
? + 125 + 20 = 180
? + 145 = 180
? = 35
Steps
I’m using elimination so I’m trying to get rid of y
To do that I multiply the first equation by 2 and the second by -3. Then solve
4x + 6x = 12
15x + -6x = -12
—————————
19x + 0 = 0
Divid by 19 to get x to one side. 0/19 is 0 so
X= 0
Plug that into an equation so 0 + 3y = 6
Divid by 3 and y = 2
Answer x = 0 y = 2
Area of trapezoid = Average length of parallel lines x height
3+22=25
25/2= 12.5
12.5x6=75cm^2