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svet-max [94.6K]
3 years ago
9

What's the 25th term if the first term is 3 and the common difference is -21

Mathematics
1 answer:
Fittoniya [83]3 years ago
8 0

Answer:

this is an arithmetic sequence problem

-5,-1,3,7,...

a25=-5+(25-1)4 (look at the other problem that I did)

a25=-5+24*4

a25=-5+96

a25=91

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ANSWER THESE QUESTIONS FOR 70 POINTS I NEED THESE PLEASE
Leto [7]
1) choice 3
2) commutative property
3) 12x + 8x -3x
common factor of x
x(12+8-3)
or
4x(3+2)-3x
8 0
3 years ago
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The management of Acrosonic plans to market the ElectroStat, an electrostatic speaker system. The marketing department has deter
crimeas [40]

Answer:

(a)R(x)=-0.02x^2+610x

(b)R'(x)=-0.04x+610

(c)R'(5400)=$394

Step-by-step explanation:

Given that x is the quantity demanded and the speaker's unit price (in dollars) is p where:

p = −0.02x + 610 (0 ≤ x ≤ 20,000)

(a)Revenue function R.

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Therefore:

R(x)=xp

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(b)Marginal revenue function R'(x)

If R(x)=-0.02x^2+610x

Then, the marginal revenue function

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R'(5400)=-0.04(5400)+610\\R'(5400)=394

From the above, we can infer that the revenue that will be generated on the sales of the 5401st item is $394.

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3 years ago
Anybody know how to do these? i need help pls contact me
Oksana_A [137]
The awnser is 1!!!!! good luck!
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Question 8 pls help me please
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The correct answer is B
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One angle measures nine more than six times a number. A sequence of rigid motions maps the angle onto another angle that describ
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Answer:

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4 years ago
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