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marysya [2.9K]
3 years ago
6

What is the 20th term of the arithmetic sequence?

Mathematics
2 answers:
podryga [215]3 years ago
8 0
You just need to substitute 20 for x and then solve.

a(20) = -5 +(20-1)3

Simplify: a(20) = -5 + (60-3)

Simplify: a(20) = -5 + 57

Result: a(20) = 52

So, 52 is the 20th term of the arithmetic sequence.
Mandarinka [93]3 years ago
8 0
In the equation
a(n) =  - 5 + (n - 1)3
Let n=20 and evaluate it as:

a(20) =  - 5 + (20 - 1)3 \\  \\ a(20) =  - 5 + (19)3 \\  \\ a(20) =  - 5 + 57 \\  \\ a(20) = 52
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URGENT! find the sum. the answer is not D​
otez555 [7]
<h3>Answer:  C)  -1/2</h3>

=============================================

Explanation:

We'll apply the derivative to get

g(x) = 4x^3 + 3x^2

g ' (x) = 3*4x^2 + 2*3x

g ' (x) = 12x^2 + 6x

Set that equal to 0 and solve for x. We do this to find where the horizontal tangents are located.

g ' (x) = 0

12x^2 + 6x = 0

6x(2x + 1) = 0

6x = 0 or 2x+1 = 0

x = 0 or x = -1/2

Adding those two said solutions yields us the final answer choice C

7 0
2 years ago
Which of the following is equal to the rational expression when x 2 or -4? 5(x-2)/(x-2)(x+4)
Elena L [17]
Wait when x= 2 or -4? is the second part options or 5(x-2)/(x-2)(x+4)
6 0
3 years ago
Please help:((
kolezko [41]

Answer:

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30%=0.3

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Hey try to do these question by your self next time OwO

4 0
3 years ago
If someone could help me out with this, I would greatly appreciate it!!
kati45 [8]

We are given that revenue of Tacos is given by the mathematical expression -7x^{2}+32x+240.

(A) The constant term in this revenue function is 240 and it represents the revenue when price per Taco is $4. That is, 240 dollars is the revenue without making any incremental increase in the price.

(B) Let us factor the given revenue expression.

-7x^{2}+32x+240=-7x^{2}+60x-28x+240\\-7x^{2}+32x+240=x(-7x+60)+4(-7x+60)\\-7x^{2}+32x+240=(-7x+60)(x+4)\\

Therefore, correct option for part (B) is the third option.

(C) The factor (-7x+60) represents the number of Tacos sold per day after increasing the price x times. Factor (4+x) represents the new price after making x increments of 1 dollar.

(D) Writing the polynomial in factored form gives us the expression for new price as well as the expression for number of Tacos sold per day after making x increments of 1 dollar to the price.

(E) The table is attached.

Since revenue is maximum when price is 6 dollars. Therefore, optimal price is 6 dollars.


7 0
3 years ago
Find 6 rational numbers between 8 and 9​
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Answer:

Step-by-step explanation:

8,1                              8,2

8,3                            8,4          

8,5                            8,6

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