PLEAS HELP

Mathematics

1 answer:

PSYCHO15rus [73]2 years ago

4 0

2312 FPM for 2.6 minutes

2312 x 2.6 = 6011.2

28 FPM for 2 minutes

28 x 2 = 56

6011.2 descend

55 ascend

0-6011.2 = -6011.2

ans + 56 = -5955.2

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(9c2−3cw−6w2)−(−9c2+9cw−w2)

denis23 [38]

Answer: The answer is $18c^{2}$ - $12cw$ - $5w^{2}$

Step-by-step explanation:

The first thing you want to do is to add the $9c^{2}$ to the other one. You add instead of subtracting because the second one has a minus sign, and there is a minus sign in front of the parentheses. Two minus' make a plus. Adding these two together gives you a sum of $18c^{2}$ .

Next, you want to simplify 9cw. Remember that since 9cw is positive, and there is a minus sign if front of the parentheses, you need to subtract here. Subtracting 3cw and 9cw gives you a difference of $-12cw$ . The new equation is $18c^{2}-12cw$ .

Finally, we need to combine -w2 with -6w2. Remember that -w2 has a minus sign in front of it, so you need to add w2 to -6w2. This gives you $-5c^{2}$ . You combine this answer with the two answers above, and you get: $18c^{2}-12cw-5w^{2}$ . I hope this helps.