Answer:
789
Step-by-step explanation:
Answer:
55°
Step-by-step explanation:
180 - 35 - 90 = 55°
Answer: It will be D
Step-by-step explanation: 5 divided by 8 is 1.2
Answer:
The first one
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)
1)
x + 2y = 21
+ -x + 3y = 29
--------------------------
5y = 50
y = 10
x + 2(10) =21
x = 1
2)
6x + 6y = 30
+ 15x - 6y = 12
-------------------------------
21x = 42
x = 2
6(2) + 6y = 30
6y = 18
y = 3