Answer: x = -2
Step-by-step explanation:
Given:
Perimeter = 50 cm
=> 2 (2x+15)+ 2(3x+20) =50
=> 4x+30+6x+40=50
=> 10x= -20
=> x= -20/10
=> x = -2
Answer: 5>y
Step-by-step explanation:
Answer:

Step-by-step explanation:

Answer:
125
Step-by-step explanation:
The answer is 19,657. I multiplied the expressions first (10^4=10,000) (7^3=343), then I plugged them back into the equation. 2•10,000-343=19,657