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ValentinkaMS [17]
2 years ago
15

A 4 foot man cast a 6 foot shadow how tall is a tree that cast a 21 foot shadow

Mathematics
2 answers:
nika2105 [10]2 years ago
7 0

Answer:

19

Step-by-step explanation:

4 and 6 has a two- foot difference so if the tree is 21 you do 21-2=19

Eva8 [605]2 years ago
3 0

Answer:

Step-by-step explanation:

Maybe 8 feet

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rewona [7]

Answer:

20%

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6 0
2 years ago
The length of time to complete a door assembly on an automobile factory assembly line is normally distributed with a mean of 6.7
hram777 [196]
We need to work out the z-value of each question to work out the probability

Question a)

We have
X = 5 minutes
The mean, μ = 6.7 minutes
Standard deviation, σ = 2.2 minutes
z-score = (X - μ) / σ = (5 - 6.7) / 2.2 = -0.77

We want to find the probability of z < -0.77 so we read the z-table for the value of z on the left of -0.77 we have the probability P(z< -0.77) = 0.2206

The table is attached in picture 1 below

The probability of assembly time less than 5 minutes is 0.2206 = 22.06%

Question b)

z-score = (10-5) / 2.2 = 2.27

Reading the z-table for P(z<2.27) = 0.9884
The table reading is shown in the second picture below

The probability the assembly time will be less than 10 minutes is 0.9884

We can use this information to find the probability of the assembly time will be more than 10 minutes  = 1 - 0.9884 = 0.0116 = 1.16%

Question c)

The value of z between 5 minutes and 10 minutes is

P(-0.77<z<2.27) = P(z<2.27) - P(z< -0.77)
P(-0.77<z<2.27) = 0.9884 - 0.2206 = 0.7678 = 76.78%


6 0
3 years ago
If Duane adds 230 mL of milk to the 0.4 L of milk in the pitcher, how many mL of milk will be in the pitcher? How many L?
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Step-by-step explanation:

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The deli server put 0.25 pound (lb) of meat on each sandwich. She used the equation 0.25s = 50 to determine the number of sandwi
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200 is the value of s
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3 years ago
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