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dedylja [7]
4 years ago
12

What conclusions can be made about the series ∞ 7 cos(πn) n n = 1 and the integral test?

Mathematics
1 answer:
Fiesta28 [93]4 years ago
4 0
A conclusion can be made that nobody on brainly knows what that sentence means 




sorry ^-^
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I need help thank you
IRISSAK [1]

Answer:

1) k = 3

2) 3, 4, 5

3) k + (k + 2) + (k + 4) = 4k

4) 6, 8, 10

Step-by-step explanation:

Jared used the equation;

k + (k + 1) + (k + 2) = 4k

Let's find k.

3k + 3 = 4k

4k - 3k = 3

k = 3

Thus,the integers will be;

3, (3 + 1) and (3 + 2)

This is; 3, 4, 5

He is looking for consecutive even integers but yet got 3 and 5 which are odd numbers. However, he should have used the format;

k, (k + 2), (k + 4) as the 3 consecutive even integers.

Thus, rewriting the main equation gives;

k + k + 2 + k + 4 = 4k

3k + 6 = 4k

4k - 3k = 6

k = 6

Thus,the integers are;

6, (6 + 2), (6 + 4)

This is; 6, 8, 10

6 0
3 years ago
Follow the steps to solve for the variable in this two-step equation: 5x – 10 = 0
dlinn [17]
Answer: x=2

-10 is added to 0 making is 5x=10
Divide 5 on both sides making is x=2
6 0
3 years ago
Which of the following is a rational number
levacccp [35]

Answer:

pi

Step-by-step explanation:


7 0
4 years ago
Read 2 more answers
If Sarah has 30 bills in her wallet worth $240, all fives and tens, how many of each bill does she have? Show work if possible
bonufazy [111]

Answer:

Step-by-step explanation:

3 0
3 years ago
Clark has a box of nickels and dimes that totals $1.90. there are a total of 27 coins. how many nickels and dimes does he have?
Andrej [43]
$0.05(n) + $0.10(d) = $1.90
n + d = 27
n + d - d =27 - d
n = 27 - d

$0.05(27-d) + $0.10(d) = $1.90
1.35 - 0.05d + 0.10d = $1.90
1.35 +0.05d = $1.90
1.35 - 1.35 +0.05d = $1.90 -1.35
0.05d = 0.55
0.05d/0.05 = 0.55/0.05
d = 11

n = 27 - 11
n = 16

$0.05(16) + $0.10(11) = $1.90
$0.80 + $1.10 = $1.90
$1.90 = $1.90
4 0
3 years ago
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