Let length=x, witdth=x-9
Perimeter=130
2 length+2 width=130
2x+2(x-9)=130
2x+2x-18=130
4x=130+18
4x=148
X=37 cm
Length=37cm; width=37-9=28cm
Hope this can help.
Answer:
40.) the third one
42.)the last one
Step-by-step explanation:
Answer:
Situation 2 (B)
Step-by-step explanation:
I think it would be B since the power of the gear increases proportionally with the radius.
Answer:
Both be positive or both be negative
Step-by-step explanation:
Both be positive or both be negative
+ *+ = +
- * - = +
Answer:
66
Step-by-step explanation:
4^3=64
64+2(3-2)
64+6-4 =64+2.
64+2=66
