Answer:
No solution
Step-by-step explanation:
Using substitution, we get to the answer 12=0, which is untrue meaning no solution.
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Answer:
Step-by-step explanation:
15x+40=-47+27
15x+40=-20
15x=-60
X=-4
Answer:
24
Step-by-step explanation:
use Pythagoras theorem
a^2 + b^2 = c^2
18^2+b^2=30^2
b^2 = 30^2 - 18^2
b = √576 =24