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MAVERICK [17]
3 years ago
8

I need helppppppppp​

Mathematics
2 answers:
marshall27 [118]3 years ago
7 0

Answer:

C.

Step-by-step explanation:

I checked it and it’s right I hope this helps!!

Stolb23 [73]3 years ago
5 0
The answer is C
Hope this helps
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Ten samples of coal from a northern appalachian source had an average mercury content of 0.242 ppm with a standard deviation of
Dovator [93]
The confidence interval is from 0.2191 to 0.2649, given by

0.242\pm0.0229.

The z-score we need is found by first subtracting the confidence level from 1:
1 - 0.95 = 0.05

Divide that by 2:
0.05/2 = 0.025

Subtract that from 1:
1 - 0.025 = 0.975

Look this up in the middle of a z-table (http://www.z-table.com) and we see that the z-score is 1.96.

Now our confidence interval is given by
\overline{x} \pm z\times \frac{\sigma}{\sqrt{n}}
\\
\\0.242\pm 1.96 \times (\frac{0.037}{\sqrt{10}})
\\
\\0.242 \pm .0229
\\
\\0.242-0.0229=0.2191
\\
\\0.242+0.0229 = 0.2649
5 0
3 years ago
Create an equivalent trinomial for 2 (3x + 5)(2x - 6)​
emmainna [20.7K]

Answer:

24x^2+112x+120

Step-by-step explanation:

distribute the 2

(6x+10)(4x+12)

foil it

24x^2+112x+120

5 0
3 years ago
24. q + r t s, for q = 46, r = 19. s = 54​
Kaylis [27]

(24 \times 46 )+ (19 \times t \times 54) =

1104 + 1026t

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

8 0
3 years ago
Dalia bought a few swirl marbles and divided it equally among four of her friends and her brother, Jake. While playing, Jake los
Licemer1 [7]

Answer:

45÷5=9-2=7 is this the equation took so long but got the right answer

3 0
3 years ago
Select the correct answer.
ale4655 [162]

Answer:

i think its b

Step-by-step explanation:

5 0
3 years ago
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