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ElenaW [278]
4 years ago
8

K(n)=n^3-3n; Find k(-5)

Mathematics
1 answer:
kozerog [31]4 years ago
5 0

Answer:

The answer to your question is:    k(-5) = -115

Step-by-step explanation:

Function       k(n) = n³ - 3n      find k(-5)

                    k(-5) = (-5)³ - 3(-5)             substitution

                    k(-5) = -125 + 15                simplify

                    k(-5) = -115

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What word problem could be used for the 2 step equation .5(x+40)=200
Fiesta28 [93]

Since multiplying by 0.5 is the same as dividing by 2, the problem is described by the sentence

"Half the sum of a number and 40 equals 200"

5 0
3 years ago
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How do I factorise 35x+55
densk [106]
Find what is common between 35 and 55....and that would be 5....so factor 5 out

35x + 55 =
5(7x + 11) <==


5 0
3 years ago
Read 2 more answers
3
kenny6666 [7]

Answer:

(x=days)  g(x)=15x+200

Step-by-step explanation:

the 200 is a base fee, meaning you cant tag a variable on it and in this case it works as a y-intercept, the 15 dollars a day would be 15x because x is the number of days and to calculate how much it costs to work a few days you multiply the daily rate and the number of days, then add 200 to get your cost.

5 0
3 years ago
........................
Vsevolod [243]
Do you have a question?
6 0
3 years ago
Find the surface area of the cone shown. Find the surface area of a cone with the same slant height and triple the diameter. Use
KonstantinChe [14]

Answer:

surface area = 8704.08 cm²

Step-by-step explanation:

The surface area of a cone is given by the formula;

SA = πr² + πrL

Where r is radius and L is slant height

We are given;

Diameter = 24cm

Slant height; L = 41 cm

We are told that this new cone has a diameter that is triple of the one given.

Thus, new diameter = 24 x 3 = 72 cm

Thus, Radius; r = 72/2 = 36 cm

SA = π(36)² + π(36)(41)

SA = (3.14 * 1296) + (3.14 * 1476)

SA = 8704.08 cm²

4 0
3 years ago
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