It should be 112.5 pounds because if there are 15 boxes and each box weighs 7.5 pounds, 15 x 7.5 = 112.5
Answer:
The probability is 0.017429
Step-by-step explanation:
We start by calculating the z-score
Mathematically;
z-score = (x-mean)/SD/√n
In this case;
x = 273
mean = 276
SD = √(variance) = √81 = 9
n = 40
Substituting these values into the z-score formula, we have that;
z = (273-276)/9/√40
z = -2.11
So we proceed to get the probability
the probability in this case is;
P( z < -2.11)
We can use the normal distribution table for this
Our answer will be
P( z < -2.11) = 0.017429
x
3
+
2
x
2
−
7
x
−
14
x3+2x2-7x-14
Factor out the greatest common factor from each group.
Tap for more steps...
x
2
(
x
+
2
)
−
7
(
x
+
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x2(x+2)-7(x+2)
Factor the polynomial by factoring out the greatest common factor,
x
+
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x+2.
(
x
+
2
)
(
x
2
−
7
)
hope i helped! (sorry if wrong)
