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wariber [46]
4 years ago
9

Quiz !!!!! help is for today please ​

Mathematics
1 answer:
alexandr402 [8]4 years ago
4 0

-30-20-40-50will be your answer

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In which situation below would you want to use the Explicit Formula instead of the Recursive Formula?
Luden [163]

9514 1404 393

Answer:

  all of them, possibly excepting the 4th term

Step-by-step explanation:

The recursive formula is good if you have terms near the one of interest. It might be used for the 4th term, but that would require that you compute the three previous terms:

  7, 5, 3, 1 . . . . requires 3 subtractions

It can be about as easy to calculate ...

  a4 = 7 -2(3) = 1 . . . . requires two* subtractions and a multiplication

__

However, for the 7th, 11th, and 106th terms, it is impractical to list all previous terms. The explicit formula is a better choice.

A.  a4 = 7 -2(3) = 1

B.  a7 = -1 +10(6) = 59

C.  a106 = 2 +5(105) = 527

D.  a11 = -3 +4(10) = 37

_____

* The explicit formula is ...

  an = a1 +d(n -1)

The operations identified in this formula (in the order required by the Order of Operations) are subtraction, multiplication, and addition. For a negative common difference, that amounts to two subtractions and a multiplication.

For manual evaluation, the work involved in using the recursive or explicit formulas for the 4th term is about the same, if the arithmetic is easily done mentally (as here).

5 0
3 years ago
Combine like terms to simplify the expression:
masha68 [24]

Answer: k/2 - 3/5

Step-by-step explanation: This is what my calculator came up with.

3 0
3 years ago
PLZ FIND THE AREA FOR THE CIRCLE, plz show me how you got ur ANWSER thx
pishuonlain [190]

Answer:

i got 78.54 as my answer

3 0
4 years ago
Read 2 more answers
Ellie's new kitten is 412 inches long. Her rabbit is 325 inches longer than her kitten. Which equation can be used to find the l
noname [10]
412 + 325 = R
R = 737
I hope that is the answer you were looking for!
7 0
3 years ago
Read 2 more answers
drag each tile to the correct box. not all tiles will be used. one solution each is given for four quadratic equations. assuming
saw5 [17]

for the equation is, x = -4 - 5i

The  solution will be, x = -4 + 5i

for the equation is, x = 4 + 5i

The  solution will be, x = 4 - 5i

for the equation is, x = 5 - 4i

The  solution will be, x = 5 - 4i

<h3>Quadratic equation defind as:</h3>

Any equation in algebra that can be written in proper format as where x stands for an unknown, where a, b, and c stand for known numbers, and where a 0

<h3>According to the given information:</h3>

If (a + bi) is a complex number and a quadratic equation has one solution,

The second solution to the equation will be the conjugate of the first.

Consequently, the alternative solution will take the form of (a - bi).

for the equation is, x = -4 - 5i

The  solution will be, x = -4 + 5i

for the equation is, x = 4 + 5i

The  solution will be, x = 4 - 5i

for the equation is, x = 5 - 4i

The  solution will be, x = 5 - 4i

To know more about quadratic equation visit:

brainly.com/question/17177510

#SPJ4

4 0
1 year ago
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