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KonstantinChe [14]
3 years ago
9

A 90% confidence interval is (35 45). What is the margin of error?

Mathematics
1 answer:
Sergio039 [100]3 years ago
7 0

Answer:

option a 5......

...

I hope it's correct

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Hello. I need help on this question. Please answer if you know. Provide the answer with working. Thanks.
11Alexandr11 [23.1K]

Answer:

a) - 11x - 94y / 12    b)  x -4 / 5- 3x   c) 12x - 11 /10y

Step-by-step explanation:

a)  2x - 6y / 4    -  4y - x/ 12    -   4x - 20y /3

6x - 18y / 12 -     4y - x / 12              -  16x - 80y / 12

= 5x - 14y / 12     - 16x - 80y / 12

- 11x - 94y / 12

b) x /5 -    4/ 3x =  x -4 / 5- 3x

c) 2x -3/ 5y  -    5- 2x / 10y + x/y

4x - 6 /10y   -  5-2x/ 10y +  10x / 10y

2x - 11 / 10  + 10x / 10y

= 12x - 11 /10y

4 0
2 years ago
Read 2 more answers
More Algebra hw-- :/
grin007 [14]
Answer:
-11x=-66
x=6

Explanation:
-11x-12=-78
1) Add 12 to both sides.
-11x=-78+12
-11x=-66
2) Divide both sides by -11.
x=-66/-11
x=6

Hope this helps! Please leave a thanks and brainliest answer if you can :)
3 0
2 years ago
What are the demetions of a square with an area of 441 cm*2?
aksik [14]
To find the dimensions of a square with an area of 441cm² find the square root. The square root is 21. That means that each side of the square is 21 cm long.
5 0
3 years ago
Describe these points with a double inequality
german

Answer:

-3 < x ≤ 13

Step-by-step explanation:

the filled circle is the less/greater than or equal to sign and the open circle is a less/greater than sign.

8 0
2 years ago
karen is planning to drive 3105 miles on a road if she drive 345 miles a day how many days will it take to complete this trip
Maurinko [17]

Answer:

9 days!

Step-by-step explanation:

Take the number of miles shes planning on driving (3105) and divide it by the number of miles a day (345) and you would get 9

3105 ÷ 345 = 9

4 0
3 years ago
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