Answer:
B) 5x+15y=30
5x-5y=10
Step-by-step explanation:
First, we solve the top equations by addition. Multiply the first one by -4.
-4x-12y=-24
4x-8y=4
This equals -20y=-20, so y=1. Now we put that back into either equation and find that x=3. So the solution set is (3,1)
Plugging those into each of the possible choices, we find that the answer is
B) 5x+15y=30. 5(3)+15(1)=30 15+15=30. 30=30 CHECK
5x-5y=10 5(3)-5(1)=10. 15-5=10. 10=10. CHECK
Answer:
GCD=11
Step-by-step explanation:
Factors of 2563 are: 1 , 11 , 233 , 2563.
Factors of 4147 are: 1 , 11 , 13 , 29 , 143 , 319 , 377 , 4147.
Answer:
15 cm²
Step-by-step explanation:
3(5)=15 cm²
