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Aleks04 [339]
3 years ago
8

Two different formulations of an oxygenated motor fuel are being tested to study their road octanenumbers. The variance of road

octane number for formulation 1 is ı2 = 1.5, and for formulation, 2it is ı2 = 1.2. Two random samples of size n1 = 15 and n2 = 20 are tested, and the mean roadoctane numbers observed are x1 = 89.6 and x2 = 92 5. Assume normality. Find the 95%confidence interval for the difference in the mean octane number.
Mathematics
1 answer:
Lyrx [107]3 years ago
3 0

Answer:chomai

Step-by-step explanation:chomai

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5y + 2 + 6 + 2y 5y + 2(y + 3) + 2 combining like terms 6y − y + 2y + 10 − 4 + 2 Commutative Property Distributive Property arrow
Paraphin [41]

Answer:

Distributive Property

Step-by-step explanation:

5y + 2 + 6 + 2y

= 5y + 2(y + 3) + 2 This is the distributive property of multiplication w.r.t. addition

= 6y − y + 2y + 10 − 4 + 2

The distributive property of multiplication with respect to addition  is the one  which separates each term by using multiplication and then addition.

So we see that 2 is multiplied with y and 3 and then added with the like terms. If there was a minus sign the property would be distributive over subtraction.

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3 years ago
How do i solve this equation? and could you show it to me step by step?
ipn [44]
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3 years ago
Which equations have equivalent expressions?
Kazeer [188]

Answer:

A,D,E

Step-by-step explanation:

i. 2t+3t=6t

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3 years ago
The statement "if x is divisible by 8, then it is divisible by 6" is false if x equals
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6 0
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Read 2 more answers
2 variable inequalities from their graphs . Please answer. Ty!
Alexus [3.1K]

Answer:

y≤\frac{1}{3} x+1

Step-by-step explanation:

Since the graph is facing down, We know the equation is y<mx+b

Since slope is rise/run the slope is 1/3.

Since the y intercept (The point where the line hits y) is 1, the equation is

y<1/3x+1

BUT WAIT!

The line is solid meaning that we have to include the line as part of the values. This will make the new equation

y≤\frac{1}{3} x+1

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