The answer should be 2/3 divided by 1/8 gallons, plus 2/3
12x + (-3y) + 4x + (-z)
12 (3) + -3 (13) + 4 (3 ) + (-5)
36 + -39 + 12 + (-5)
36 + 12 -39 - 5
48 - 44
4
Step-by-step explanation:
H0: u = 150
H1: u ≠ 150
Total sum = 15933.24
N = 100
Mean = 15933.24/100
= 159.3324
σ² = 25954.03 - (159.3324)²/100
σ² = 556.213
σ = √556.213
σ = 23.8162
Testing hypothesis
t = (bar x - u)/ σ/√n
= 159.3324-150/23.8162/√100
= 3.91
We will have a p value of 0.02
0.0002 < 0.01
We reject null hypothesis at 1% level of significance
C. Mean = 159.3324
Se= 2.3936
Df = 100-1 = 99
Critical value at 0.01 = +-2.626
T = x-u/s.e
= -2.626 =( x -150)/2.3936
When we cross multiply and solve this
X = 143.714 for the lower tail
2.626 = (x-159)/2.3936
= 156.286 for upper tail.
We therefore reject H0 at
Bar X <= 143.71
Bar X >= 156.286
At 10%
Critical t = 1.660
-1.660 = (x - 150)/2.3936
Solving this ,
X =146.02 at the lower tail
1.660 = (x-150)/2.3936
X = 153.97
We reject H0 at
X<= 146.03
X>=153.97
Answer:step 3 Step-by-step explanation: because it is right and i took the test edge 2021
Answer:

Step-by-step explanation:


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First step multiply your terms in your first expression just to the 1 in the second expression like so:


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Anything times 1 is that anything.
That is,
.
Now we are going to take the top expression and multiply it to the -x in the second expression.
. We are going to put this product right under our previous product.


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We still have one more multiplication but before we do that I'm going to put some 0 place holders in and get my like terms lined up for the later addition:


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Now for the last multiplication, we are going to take the top expression and multiply it to x^3 giving us
. (I'm going to put this product underneath our other 2 products):


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I'm going to again insert some zero placeholders to help me line up my like terms for the addition.


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----------------------------------------------------Adding the three products!
