Answer:
-5m/2
Step-by-step explanation:
-m+ (-2m) +(-3m)+(-4m) +(-4m)+(-3m)+(-2m)+(-m)/8
-m-2m-3m-4m-4m-3m-2m-m/8
-20m/8
-5m/2
Answer:
x=-5
Step-by-step explanation:
-3x+25=40. You want to isolate x so you have to subtract 25 from both sides. -3x=15. We then want x to be isolated so we have to divide both sides by -3 to make x by itself. x=-5. Therefore, x=-5.
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Answer:
(A) 6 ft long
Step-by-step explanation:
6.25/3 is almost 2. 12.5/2 is almost 6, which is the answer.
Answer:
2352
Step-by-step explanation:
You just multiply them
Answer:
29107
Step-by-step explanation:
Every next 'level', a ring of balls is added.
The ring has 6 sides of n balls, but you would then count all 6 corners double, so you have to subtract 6.
So Bₙ = Bₙ₋₁ + 6n - 6
This gives you a sequence of 1, 7, 19, 37, 61, 91, 127, 169, 217, 271, 331, ...
All the way up to 29107 at 100 balls.