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deff fn [24]
3 years ago
10

Order of Operations Helppp i will be very greatful

Mathematics
1 answer:
Kisachek [45]3 years ago
4 0
The order of operations is:

Parentheses/Groupings, 
Exponents, 
Multiplication/Division, from left to right, 
Addition/Subtraction, from left to right

35. (31-9) - 12 ÷ 2 
22-12 ÷ 2 
22-6
=16

 36. 36 ÷ 3 +72 ÷ 9 
12 + 72 ÷ 9 
12+8
=20

37. 8(16-7)
8(9)
=72

38. 100-28 x 2 
100-56
=44

I hope this helps!


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Answer:

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Step-by-step explanation:

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The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

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The margin of error is:

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The upper end of the interval is the sample mean added to M. So it is 1.4 + 0.21 = 1.61 pounds.

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