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AnnyKZ [126]
3 years ago
14

A food safety guideline is that the mercury in fish should be below 1 part per million​ (ppm). Listed below are the amounts of m

ercury​ (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 98​% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna​ sushi?
0.550.55
0.830.83
0.110.11
0.960.96
1.251.25
0.510.51
0.950.95
Mathematics
1 answer:
posledela3 years ago
7 0

Answer:

Check the attached document for the solutions, cheers

Step-by-step explanation:

Download docx
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The owner of an office building is expanding the length and width of a parking lot by the same amount. The lot currently measure
Gnoma [55]

The best and most correct answer among the choices provided by your question is the second choice or letter B "20".

The current area is 120(80)=9600 and he want to expand it by 4400 so that the new area will be 9600+4400=14000 

14000=(120+x)(80+x) 

14000=9600+200x+x^2 

x^2+200x-4400=0 

x^2-20x+220x-4400=0 

x(x-20)+220(x-20)=0 

(x+220)(x-20)=0, since x is an increase it must be greater than zero so 

x=20ft 

(120+20)(80+20)=14000ft^2


I hope my answer has come to your help. Thank you for posting your question here in Brainly.

4 0
3 years ago
Read 2 more answers
25<br> 2<br> In long division
Andre45 [30]

Answer:

..........

Step-by-step explanation:

i don't understand 25 2 ??

3 0
3 years ago
Could you guys plesssse help me with 3 <br> and 4
SOVA2 [1]
Number four is B. 28.
7 0
3 years ago
Please help me with 8, 9, and 10 thanks! Show work too
Harrizon [31]
In 8, 9, 10, all the triangles are similar, meaning corresponding sides have the same ratio.

8. hypotenuse / (short side) = 25/x = x/9
  x² = 25*9 = 5²×3²
  x = √(5²×3²) = 5*3 = 15

9. (long side) / (short side) = x/7 = 9/x
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  x = √(9*7) = 3√7

10. (short side) / (long side) = x/48 = 48/64
  x = 48²/64 = 36
3 0
3 years ago
I really need help for this! Please!
Serhud [2]

Answer: -16

Step-by-step explanation:

-3 is less than -2 so use the first one

Plug into equation

5(-3)-1

-15-1= -16

8 0
3 years ago
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