Nth term an = a1 r^(n-1)
= 512 (0.5)^(n-1) Answer
First 5 terms are:-
512 , 256 , 128, 64 , 32
Multiply the A by -3 this will cause d to become -3d so when the two equations are added 3d and -3d will cancel off.
Answer:
A=920 ft.
Step-by-step explanation:
Using the formulas
A=2AB+(a+b+c)h
AB=s(s﹣a)(s﹣b)(s﹣c)
s=a+b+c
2
Solving for A
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=8·20+17·20+15·20+1
2·﹣84+2·(8·17)2+2·(8·15)2﹣174+2·(17·15)2﹣154=920
I forgot how to do it :( I can ask my brother..
Answer:
Tip: 4,2
Total cost: 32,2
Step-by-step explanation:
Tip: (28×15)÷100 = 4,2
Total cost: Tip + original money
--> 4,2 + 28 = 32,2
