zia homes is contracted to frame 32 wooden houses of the same design in a new subdivision of 300 homes. the fourth unit took 360 hours, but the company expects to cut about 12% off the time for each replication of the same design. use the learning curve assumption of a constant decrease with each doubling of production to estimate past completion times (units 1 and 2) and the completion time for units 8 and 32. round to the nearest hour. the completion time for unit 1 was hours. the completion time for unit 2 was hours. the completion time for unit 8 is hours. the completion time for unit 32 is hours.

Answer:

So first we substitute -2 for x

f(-2) = 10(-2)^2 - 4(-2) - 5

f(-2) = 400 + 8 - 5

f(-2) = 400 + 3

f(-2) = 403

Step-by-step explanation:

Answer:

It is about 4.0*10^2

Step-by-step explanation:

The correct answer is c. Inferential Statistics.

Inferential statistics is the branch of statistics that allows for drawing conclusions about a population based on the information collected from a sample. When conducting research or surveys, it is often impractical or impossible to collect data from an entire population.

Instead, a representative sample is chosen, and inferential statistics are used to make inferences or predictions about the larger population. By analyzing the characteristics and patterns observed within the sample, inferential statistics enable researchers to make generalizations or draw conclusions about the population as a whole.

This process involves applying various statistical techniques, such as hypothesis testing and confidence intervals, to estimate population parameters and assess the reliability of the conclusions. Magnitude statistics, central tendency, and effect size are important concepts in statistics, but they do not specifically address the ability to draw population-level conclusions from sample data.

Magnitude statistics focuses on the size of the effect or relationship between variables, central tendency measures summarize the central values of a dataset, and effect size quantifies the strength of an effect or relationship.

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The word problem including the given equation is mentioned below.

Given, a system of equations

x + y = 0

2x - y = 6

We have to make a word problem using the given system of equations.

Ram and Rahul are two friends and both attempt a test of 10 marks. Now, Ram prepared for the test whereas Rahul didn't prepared for the test and marked the wrong answers in the test. If negative marking is allowed in the test and it is given that, sum of the marks of both the students is zero. Also, twice the marks of Ram is 6 less than the marks of Rahul.

Find the marks of both the students.

Hence, the word problem including the given equation is mentioned above.

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Answer:

what do you need

Step-by-step explanation:

Answer:

5.83 miles per second or 6 miles rounded

Step-by-step explanation:

There are 60 minutes per hour and 60 seconds per minute

60 x 60 = 3600 seconds her hour

21000/3600 = 5.83 miles per second or 6 miles rounded

Answer:

6 miles per second

Answer:

-1

Step-by-step explanation:

what you would start by doing is subtract x from 5 which gives it -6x. then, you would add the 2 to the 4 which cancels out the negative 2. so it should look like 6=-6x, then you would divide 6 by -6 which gives your answer as -1

Answer:

so the value of x is 8.3333≈8.3

Step-by-step explanation:

3x:10=5:2

\(\frac{3x}{10}=\frac{5}{2}\)

by cross-multiplication

3x×2=5×10

6x=50

6x/6=50/6

x=8.33

i hope this will help you :)

Answer:(192/9.6)÷7=20/7

Step-by-step explanation:

Answer: (a) tan 16°:

Using a calculator, we get:

tan 16° ≈ 0.291

Rounding to three significant figures, tan 16° ≈ 0.291.

(b) tan 89°:

Using a calculator, we get:

tan 89° ≈ 57.290

Note that this value is extremely large and not meaningful in most contexts.

(c) tan 18.7°:

Using a calculator, we get:

tan 18.7° ≈ 0.340

Rounding to three significant figures, tan 18.7° ≈ 0.340.

(d) tan 45.4°:

Using a calculator, we get:

tan 45.4° ≈ 1.058

Rounding to three significant figures, tan 45.4° ≈ 1.06.

Step-by-step explanation:

Answer:

a = 26°

Step-by-step explanation:

the measure of a secant- secant angle is half the difference of the intercepted arcs, that is

a = \(\frac{1}{2}\) (66 - 14)° = \(\frac{1}{2}\) × 52° = 26°

Answer: n1 = -6, n2 = 6

Step-by-step explanation:

\(\sqrt[]{n^{2} } =\sqrt{36}\\n=+-6\\n=-6\\n=6\)

Answer:

x = 4

Step-by-step explanation:

here's my work :D

Answer:

x = 4

Step-by-step explanation:

3/4(x + 8) = 9 <== convert the fraction to a decimal

0.75(x + 8) = 9 <== distribute

0.75x + 6 = 9 <== subtract 6 from both sides

          - 6   - 6

0.75x = 3 <== divide both sides by 0.75 to isolate the variable

/0.75    /0.75

x = 4

Hope this helps!

Answer:

1.96

Step-by-step explanation:

The terms a_2, a_3, and a_4 are -2, -5, and -23/5, respectively.

Given the sequence a_1 = 4 and a_n + 1 = (4 / a_n) - 3; To find the terms a_2, a_3, and a_4 using the recursive formula of the given sequence:

We need to find the first few terms by substituting the values. For n=1, a_1 = 4. Using this value, we can find the value of a_2.

Therefore,a_1 = 4 a_2 = a_1+1 = (4 / a_1) - 3a_2 = (4 / 4) - 3 = -2.

This means a_2 = -2Next, we will find a_3 by using the value of a_2.a_3 = a_2+1 = (4 / a_2) - 3a_3 = (4 / (-2)) - 3 = -5.

Therefore, a_3 = -5.Finally, we will find a_4 by using the value of a_3.a_4 = a_3+1 = (4 / a_3) - 3a_4 = (4 / (-5)) - 3 = -23/5.

Therefore, a_4 = -23/5.

Thus, the terms a_2, a_3, and a_4 are -2, -5, and -23/5, respectively.

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A)

triangles are similar by AA, Check the picture below.

B)

if DE = 222, then

\(\cfrac{AB}{DE}=\cfrac{BC}{DC}\implies \cfrac{AB}{222}=\cfrac{76}{24}\implies \cfrac{AB}{222}=\cfrac{19}{6} \\\\\\ AB=\cfrac{(222)19}{6}\implies AB=703\)

Answer: What expression can Melanie write to figure out how much her ... Mauricio plans on retiring in 20 years, and he wants to double his money by that time. He has contacted various banks, looking for a CD that compounds interest monthly, and to calculate what annual interest rate he needs, he is using the rule of 72.

Step-by-step explanation: I did what I could man

Answer:

\(1296 = 6 \times 6 \times 6 \times 6 = {6}^{4} = {2}^{4} \times {3}^{4} \)

the answer is 9 because

3x9=27

and 27-18=9

mark brainliest plz

Answer:

The third one down

Step-by-step explanation:

You would need to deposit approximately $109.56 each month in the savings account to be able to pay the $3,000 bill in two years.

To calculate how much you would need to deposit in the savings account each month to be able to pay the bill, we can use the present value of an ordinary annuity formula:

PV = PMT * [(1 - (1 + r/n)^(-n*t)) / (r/n)]

Where:

PV is the present value (the initial deposit),

PMT is the monthly deposit amount,

r is the annual interest rate (in decimal form),

n is the number of compounding periods per year,

t is the number of years.

In this case, the present value (PV) is $2,716.89, the annual interest rate (r) is 5% (or 0.05 in decimal form), the compounding is monthly (n = 12), and the time (t) is 2 years.

Let's calculate the monthly deposit amount (PMT):

2716.89 = PMT * [(1 - (1 + 0.05/12)^(-12*2)) / (0.05/12)]

Simplifying the equation:

2716.89 = PMT * [(1 - 0.826446) / 0.004167]

Calculating the right-hand side of the equation:

PMT ≈ $109.56

Therefore, you would need to deposit approximately $109.56 each month in the savings account to be able to pay the $3,000 bill in two years.

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Answer:

V = 972m^3

Step-by-step explanation:

small  = lwh = 9(2)(6)

large = lwh = 16(9)(6)

V = 9(2)(6) + 16(9)(6)

V = 108 + 864

V = 972m^3

Scoring in the 60th percentile on her math exam means that the student performed better than 60% of other test takers.

Percentile is a measure that indicates the percentage of data points that are below a particular value in a given dataset. In this case, the student's score is in the 60th percentile, which means she scored better than 60% of the other test takers.

Imagine arranging all the scores of the test takers in ascending order. The 60th percentile represents the score that is greater than 60% of the scores below it and less than 40% of the scores above it. It is a way of understanding how a particular score compares to the rest of the scores in the group.

However, it also means that 40% of the test takers scored higher than her.  If the student scored in the 60th percentile, it indicates that she performed relatively well compared to the majority of the test takers.

Percentiles provide a useful way to interpret individual scores in relation to the entire distribution of scores in a dataset.

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Therefore width = 10cm

                 height = 20cm

                 length = 20cm

given that

volume = 4,000\(cm^{3}\)

let height = h

    width = w

    length = l

width and length are equal

height = length = h

volume of box = height × width × height

             4000  = h × w × h

             4000 = \(h^{2}\)w

                  w = 4000/\(h^{2}\)

surface area(SA) = area of base + sum of area of each side

                           =  \(h^{2}\) + hw + hw + hw + hw

                           =  \(h^{2}\) + 4hw

substitute y = 4000/\(h^{2}\)

SA =  \(h^{2}\)  + 4x(4000/ \(h^{2}\) )

SA =  \(h^{2}\)  + 16000/h

Taking the derivative:

SA' = 2h - 16000/ \(h^{2}\)

making SA' = 0:

0 = 2h - 16000/ \(h^{2}\)

2h = 16000/ \(h^{2}\)

2\(h^{3}\) = 16000

\(h^{3}\) = 8000

h = 20 cm

w = 4000 /  \(h^{2}\)  = 4000 / 20² = 10 cm

Therefore width = 10cm

                 height = 20cm

                 length = 20cm

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Answer:

68 1/3 + 69 1/3 + 70 1/3 = 208

Step-by-step explanation:

Sorry if it can't have a fraction but it should be 68 1/3 + 69 1/3 + 70 1/3 = 208.

Answer:

\(t=\dfrac{f-v}{a}\)

Step-by-step explanation:

The equation that represents the final velocity of an object is given by :

f=v+at ....(1)

v is initial velocity

a is acceleration rate

t is time

We need to solve the above equation for t.

Subtracting both sides of equation (1) by v

f-v=v-v+at

f-v=at

Dividing both sides of the above equation by a

\(\dfrac{f-v}{a}=\dfrac{at}{a}\\\\t=\dfrac{f-v}{a}\)

So, the value of t is \(\dfrac{f-v}{a}\).

Answer:

the answer is A

i am doing the assignment right now and i got it correct

Answer:

Select the plain line in the Insert Shapes group. Place your cursor where you want a tick mark on your line, hold the "Shift" key, and drag to create a vertical mark. Holding the Shift key ensures a straight line.

Step-by-step explanation:

The chairs in the auditorium illustrates an arithmetic sequence

From the question, we have the following sequence:

Seats: 18, 26, 34

Rewrite as:

26 = 18 + 8

34 = 26 + 8

The above means that:

The number of seats on a row is 8 added to the the number of seats on the previous row.

Hence, the recursive rule is:

an = an-1 + 8; a1 = 26

In (a), we have:

a1 = 26 and d = 8

The explicit rule is calculated using:

an = a1 + (n -1) * d

This gives

an = 26 + (n - 1) * 8

Expand

an = 26 - 8 + 8n

Evaluate the difference

an = 18 + 8n

Hence, the explicit rule is:

an = 18 + 8n

This means that n = 7.

So, we  have:

a7 = 18 + 8 * 7 = 74

Hence, there are 74 seats in the 7th row

We have the maximum number of rows to be 12.

So, the sigma notation would be:

\(\sum\limits^{12}_{n=1} {18 + 8n}\)

The total number of seats is:

Sn = n/2(2a + (n -1) * d)

This gives

S12 = 12/2(2 * 26 + (12 -1) * 8)

S12 = 840

Hence, 840 chairs can fit the auditorium

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Answer:

answer is x=-1/10 is the answer