Answer:
the difference is 1 and 4
Step-by-step explanation:
hope this helps
Answer:
D and A
Step-by-step explanation:
8. 1+8n^2-5n-7
8n^2-5n-6
9. -6-7
-13
141) d
121) c
23) c
51) a
49) c
Answer:
little rusty but I think its b sorry if wrong
Step-by-step explanation:
Solve the equation 1/30 + 1/45 = 1/x
where x is the required time
multiply thru by 90x:-
3x + 2x = 90
x = 90 / 5 = 18
answer 18 minutes