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3 years ago

12

Is this right? Will mark branliest for the correct answer

2 answers:

wolverine [178]3 years ago

7 0

It’s the first one :)

horsena [70]3 years ago

6 0

Answer:

No

Step-by-step explanation:

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What is the sum of a 56-term arithmetic sequence where the first term is 6 and the last term is 391?

Sati [7]

$S_n=\dfrac{a_1+a_n}{2}\cdot n\\\\a_1=6;\ n=56;\ a_{56}=391\\\\subtitute\\\\S_{56}=\dfrac{6+391}{2}\cdot56=\dfrac{397}{2}\cdot56=397\cdot28=11,116$

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3 years ago

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El -2,4 es un número entero✨<br>Gracias!!! ✨✨✨

Marizza181 [45]

Answer:2

Step-by-step explanation:

subtract

3 0

3 years ago

I thought i had the right answer, but it was wrong. So anyone want to to help me with this? Please dont steal points. 7 points e

SSSSS [86.1K]

Answer:16 dollars per shirt

Step-by-step explanation:

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3 years ago

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WILL MARK BRAINLIEST!!!

wariber [46]

$f(x) = -9x^4 + 5x + 3\\\\ f(-x)= -9(-x)^4 + 5\cdot(-x) + 3=-9x^4-5x+3\\\\ f(-x)\not =f(x)\implies \text{ not even}\\\\ -f(x)=-( -9x^4 + 5x + 3)= 9x^4 - 5x - 3\\\\ -f(x)\not =f(-x) \implies \text{ not odd}$

Neither

4 0

3 years ago

out of a group of zebras 6/5 times the square root of the number of zebras are playing on the shore of the tank remaining six ar

MatroZZZ [7]

Answer:

Step-by-step explanation:

(6/5)√x = x - 6

(36/25)x = x² - 12x + 36

0 = x² - 13.44x + 36

x = (13.44 ± √(13.44² - 4(1)(36))) / (2(1))

x = (13.44 ± 6.052569702...) / 2

x = 3.69371... zebras

or

x = 9.74628... zebras

In either case we have some odd fractions of zebras hanging around. This makes me highly suspect that the question is misreported

3 0

2 years ago