Afew more math problem
solve each system by elimination
1. 7x+y=10
-7x-10y=26

2. 4x-2y=-14
3x-2y=-14

3. 6x+2y=20
-3x+3y=-30

4. -5x+4y=-3
-9x-4=-30

5. -9x+6y=27
-x+3y=10

6. 5x+y=-12
5x-7y=4

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: