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erastovalidia [21]

3 years ago

10

a book case is to have 4 shelves including the top, the width is to be 13 feet less than 4 times the hieght, find the width and

the height if the carpenter expects to use 20 feet of lumber to make it

1 answer:

Leni [432]3 years ago

7 0

Answer:

I get x = 16/7 ft or about 2.29 ft for the width and 4.29 ft for the height.

Step-by-step explanation:

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What type of chemical reaction is an example of anabolism ?

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Condensation reactions are anabolic, because in condensation reactions, two molecules come together to build new molecules.

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3 years ago

Almost all medical schools in the United States require students to take the Medical College Admission Test (MCAT). To estimate

yKpoI14uk [10]

Answer:

a) 0.5588

b) 0.9984

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 24

Standard Deviation, σ = 6.4

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(score between 20 and 30)

$P(20 \leq x \leq 30) = P(\displaystyle\frac{20 - 24}{6.4} \leq z \leq \displaystyle\frac{30-24}{6.4}) = P(-0.62 \leq z \leq 0.94)\\\\= P(z \leq 0.94) - P(z < -0.62)\\= 0.8264 - 0.2676 = 0.5588 = 55.88\%$

$P(20 \leq x \leq 30) = 55.88\%$

b) Sampling distribution

Sample size, n = 22

The sample will follow a normal distribution with mean 24 and standard deviation,

$s = \dfrac{\sigma}{\sqrt{n}} = \dfrac{6.4}{\sqrt{22}} =1.36$

c) P(mean score of sample is between 20 and 30)

$P(20 \leq x \leq 30) = P(\displaystyle\frac{20 - 24}{1.36} \leq z \leq \displaystyle\frac{30-24}{1.36}) = P(-2.94 \leq z \leq 4.41)\\\\= P(z \leq 4.41) - P(z < -2.94)\\= 1 - 0.0016 = 0.9984 = 99.84\%$

$P(20 \leq x \leq 30) =99.84\%$

5 0

4 years ago

Pls help I really need it

levacccp [35]

Answer:

i do not know sorry :(

Step-by-step explanation:

:(

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3 years ago

If an arithmetic series has a1 equals=44, d equals 5, and n=24, what is sn?

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Sn = 44 + 5(24-1) = 159 is the answer

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4 years ago

Which graph has a negative slope?

Natalija [7]

A negative slope is a slope that is higher up towards the left, and goes down as it progresses right.

C) is your answer, for it fits the description.

hope this helps

3 0

4 years ago

Read 2 more answers