14. the height of a rectangular box is a constant 10 inches. its length increases at the rate of 2 in/sec, its width decreases at the rate of 4 in/sec. when the length is 8 inches and the width is 6 inches, find the rate at which the volume is changing in cubic inches per second.

Answer: 28

Step-by-step explanation: a true false question has 2 questions per question if it either true or false so if there is 14 questions with all true and false it would be 14 x 2 = 28

Simplified value of given expression is 2x³√10x.

What is simplification?

In arithmetic,  simplification is reducing the expression / fraction problem during a less complicated type.

Main body:

Factor 40 into its prime factors

          40 = 2³ • 5

To simplify a square root, we extract factors which are squares, i.e., factors that are raised to an even exponent.

Factors which will be extracted are :

          4 = 2²

Factors which will remain inside the root are :

          10 = 2 • 5

To complete this part of the simplification we take the squre root of the factors which are to be extracted. We do this by dividing their exponents by 2 :

          2 = 2

At the end of this step the partly simplified SQRT looks like this:

        2 • sqrt (10x7)

Rules for simplifing variables which may be raised to a power:

  (1) variables with no exponent stay inside the radical

  (2) variables raised to power 1 or (-1) stay inside the radical

  (3) variables raised to an even exponent: Half the exponent taken out, nothing remains inside the radical. examples:

     (3.1) sqrt(x⁸)=x4

    (3.2) sqrt(x-⁶)=x-3

     (4) variables raised to an odd exponent which is  >2  or  <(-2) , examples:

     (4.1) sqrt(x5)=x²•sqrt(x)

    (4.2) sqrt(x-7)=x³•sqrt(x-1)

Applying these rules to our case we find out that

    SQRT(x7) = x³ • SQRT(x)

 sqrt (40x7) =

       2² x³• sqrt(10x)

Hence the simplification to the value is as 2² x³ • sqrt(10x)

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Answer:

91.1 cm

Step-by-step explanation:

the formula to find circumferences is pi times diameter

29pi

91.1

Hopes this helps please mark brainliest

The annual growth rate in the expenses is 0.08035 or 8.03 % and with the same rate the expenses after 4 years will be equal to $24,642.

How annual growth rate is calculated?

Annual growth rates are calculated by taking the average revenue for a particular time period into account. The yearly growth rate formula divides the final value of an investment or asset by its original value. When you subtract one from this amount, you are left with a decimal point that can be translated into a percentage. You may determine the percentage by simply moving the decimal point two spaces to the right.

The growth in the 4 years is = 18,500 – 14,000 = 4,500

Growth = initial amount (rate) (time)

4500 = x(4)(14,000) = 0.08035

It means the annual growth rate is 8.03 %

To know the expenses after 4 years, lets take initial value = 18,500, rate = 8.03% = 0.083, time = 4 years,

Increase = 18500(0.083)(4) = 6,142

So, the expenses after 4 years,

Expenses = 18,500 + 6,142 = 24,642

Therefore, the expenses after 4 years are $24,642

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The equation of the line that passes through the point (8,4) and has a slope of 0 is y = 4.

Given:

point (8,4) and has a slope of 0

slope m = 0

Standard line equation is y = mx + c

substitute (8,4) and m values in y = mx + c

4 = 0*8 + c

4 = 0 + c

c = 4

c , m values in y = mx + c

y = 0*x + 4

y = 0 +4

y = 4.

Therefore The equation of the line that passes through the point (8,4) and has a slope of 0 is y = 4.

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An equation to represent the proportional relationship between the number of hours and the distance in miles is k=y/x.

Given that, Percy rides his bike 11.2 miles in 1.4 hours at a constant rate.

The speed formula can be defined as the rate at which an object covers some distance. Speed can be measured as the distance travelled by a body in a given period of time. The SI unit of speed is m/s.

The number of hours Percy rides x, and the distance in miles, y, that he travels

So, the proportional relationship is speed = y/x

Thus, 11.2/1.4

= 8 miles per hour

Therefore, an equation to represent the proportional relationship between the number of hours and the distance in miles is k=y/x.

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It gradually decreases as alcohol is metabolized. The function C(t)=0.135 t e^{-2.802 t}models the mean BAC measured in g/mL.

The maximum average BAC during 3 hours is 0.0001358 g/mL.

f(t) = α t e−βt --(1)

Let's rewrite this in a simple form:

f(t)= α eˡⁿ ᵗ e⁻βt = αe^(ln t −βt)

Since e^x is strictly increasing and it will be maximized exactly when its argument is maximized, so we can maximize instead:

g(t)=ln t −βt

differentiating with respect to t , and g'(t) = 0

g′(t)=1/t − β = 0

=> t =1/β

we have given a function

C(t)=0.135 t e⁻²·⁸⁰²ᵗ

if we compare it with (1) we get

β = 2.802, 0.135 = α

For it's maximized we need to check the second order condition, and that of g will differentiate again , g′′(t)= −1/t² < 0

We have to compute the derivative of C(t):

C′(t) = 0.135 t⋅(−2.802)e⁻²·⁸⁰²ᵗ + 1.35e⁻²·⁸⁰²ᵗ

For optimum at t₀ if C′(t₀)=0 and C′′(t₀)≠0. Here, we have

C′(t₀) = 0.135t₀⋅(−2.802)e⁻²·⁸⁰²ᵗ₀+ 0.135e⁻²·⁸⁰²ᵗ₀ =e⁻²·⁸⁰²ᵗ₀(−0.135* 2.802t₀+ 0.135)=0

It is clear that e⁻²·⁸⁰²ᵗ₀ not equal to zero for all t₀∈R, so that

=> −0.135* 2.802t₀+0.135=0

=> t₀ = 1/2.802 ≈0.36

let us consider t is in hours, so that it makes t₀ =0.36h≈21.41min. This is the only optimum and one should verify it is indeed a maximum, i.e. C′′(t₀)<0.

Now, easily compute the maximum average BAC, which is C(t₀)=C(0.36) = 0.135 (0.36)e⁻²·⁸⁰²⁽⁰·³⁶⁾

= 0.0486(0.3678) = 0.01787508

Hence, the maximum average BAC, is 0.017 g/dL.

Maximum average BAC during the first 3 hours,

t = 3 , C(t)=C(3) = 0.135 (3)e⁻²·⁸⁰²⁽³⁾ = 0.0001358 g/mL

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Using equations we know that the value of x needs to be (E) 4 to make HL congruent to AC.

A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions.

The point-slope form, standard form, and slope-intercept form are the three main types of linear equations.

So, HL is a hypotenuse that will be congruent to the hypotenuse AC.

We know that HL is 3x + 3.

Ac is 15.

Then the equation will be:

3x + 3 = 15

Now, solve the equation to get x as follows:

3x + 3 = 15

3x = 15 - 3

3x = 12

x = 12/3

x = 4

Therefore, the value of x needs to be (E) 4 to make HL congruent to AC.

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Correct question:
For the triangles to be congruent by hl, what must be the value of x?

a. 8

b. 9

c. 17

d. 3

e. 4

The asset's value should be recognized on the balance sheet at $1.61 million.

Given,

On January 1st, 2006, Trekkers Footwear paid $2.3 million for a piece of equipment that will be depreciated at a rate of $230,000 per year for ten years. As of December 31, 2008, IT was worth $1.75 million in the market. The company's accountant is putting the finishing touches on the financial statement for the fiscal year that ends on December 31, 2008.

The balance sheet should reflect the asset's value at,

Cost of Asset = $2.3 million

Annual depreciation = $230000

Total no. of years depreciated till December 31, 2008, = 3 years

Hence, total depreciation = $230000 x 3 = 690000 = 0.69 million

Hence, book value as on 31 December 2008 = $2.3 million - $0.69 million = 1.61 million

Given Market Value on Dec 31, 2008, = $1.75 million.

But as per accounting conventions, Assets are recorded at Book value.

Hence $1.61 million is the right answer.

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The number of outstanding shares that BBQ Corp. will have post-split, given the number of outstanding shares is, 4, 050, 000 shares

A stock split refers to when the number of outstanding shares that a company has, are divided into a certain number of shares which is based on the split ratio.

For a 3:1 stock split ratio, the number of outstanding shares will be split into three shares each.

BBQ Corp. has 1. 35 million shares so post - split, they will have:

= Outstanding shares x  3

= 1, 350, 000 x  3

= 4, 050, 000 shares

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Answer:

No

Step-by-step explanation:

The sum of two sides of a triangle should be greater than the size of the third side.

2 + 3 is not greater than 5, so it's impossible to construct a triangle using the given lengths for the sides.

Answer:

4 - log3 (2)

Step-by-step explanation:

2log3 (9) = log3 (9^2)

log3 (27 * 9^2 / 54)

log3 ( 3^3 * 3^4 / 9 * 6)

log3 (3^7 / 3^2 * 3 * 2)

log3 (3^7 / 3^3 * 2)

log3 ( 3^4 /2)

log3 (3^4) - log3 (2)

4 - log3 (2)

Key expansion is most responsible for this delay.

A block cipher encrypts and decrypts a block of data with an algorithm and symmetric key. In order to expand the keyspace of a block cipher and make it more difficult to break the key through brute force, an initialization vector (IV) must be added to the plaintext that is being used as input. Key Expansion: In the initial stage, it uses just one key, but in later rounds, it expands to multiple keys. Data bytes: Instead of working with bit data, the AES encryption algorithm performs operations on byte data. Consequently, during the encryption process, it treats the size of the 128-bit block as 16 bytes.

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The speed at 60 miles to 2 dp if Karina didn't stop, will be 38.5 mph.

Speed is defined as the rate of change of position of a subject in any direction. We have the basic formula to find the speed given by:

Speed = [tex]\frac{Distance}{Time}[/tex]
s = [tex]\frac{d}{t}[/tex]

To find the average speed for the last 60 miles, we need to know the time spent by Karina during the final 60 miles.

For the initial time during 70 miles, we follow the below calculations:

Initial Speed = [tex]s_{i}[/tex] = 50mph
Initial Distance = [tex]d_{i}[/tex] = 70 miles
Initial time for 70 miles = [tex]t_{i}[/tex]

[tex]s_{i}[/tex] = [tex]\frac{d_{i} }{t_{i} }[/tex]

[tex]t_{i}[/tex] = [tex]\frac{d_{i} }{s_{i}}[/tex]

[tex]t_{i}[/tex] = [tex]\frac{70}{50}[/tex] = 1.4 hr

For the Total time = t,

Total Speed = s = 44 mph.

Total Distance = d = [tex]d_{i} + d_{f}[/tex] = 70 + 60 = 130 miles

Total time = [tex]\frac{d}{t}[/tex] = [tex]\frac{130}{44}[/tex] = 2.96 hr

For the Final time during 70 miles = [tex]t_{f}[/tex]

t = [tex]t_{i} + t_{f}[/tex]
[tex]t_{f}[/tex] = t - [tex]t_{i}[/tex]
[tex]t_{f}[/tex] = 2.96 - 1.4 = 1.56 hr

Hence, the average speed for the final 60 miles can be calculated as:

Final Speed = [tex]s_{f}[/tex] = ?
Final Distance = [tex]d_{f}[/tex] = 60
Final Time = [tex]t_{f}[/tex] = 1.56 hr.

Average Speed = [tex]s_{a}[/tex] =  [tex]\frac{d_{f}}{t_{f}}[/tex] =  [tex]\frac{70}{1.56}[/tex] = 38.50 mph.

So, the Final average speed for the last 60 miles Karina traveled is 38.50 mph

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amount of white fabric to coloured fabric a a ratio of it implet form is given by 1/2

2cm = 2 * 10 mm

2 cm = 20 mm

for every 50 mm of colored fabric, Gavyn uses 100 mm of white fabric.

The ratio is expressed as white fabric to colored fabric.

Ratio white to colored = 50/100 =  1/2

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(-5, 8)

=========================================================

These are two rules to memorize

[tex]\text{x-axis reflection: } \ \ (\text{x},\text{y})\to (\text{x},-\text{y})\\\\\text{y-axis reflection: } \ \ (\text{x},\text{y})\to (-\text{x},\text{y})\\\\[/tex]

----------

I'll relabel the point X as point A.

We apply a y-axis reflection first.

So we have:

[tex](\text{x},\text{y})\to (-\text{x},\text{y})\\\\(5,-8)\to (-5,-8)\\\\[/tex]

after the y axis reflection is applied.

This is the location of point A'

----------

Then we apply an x-axis reflection.

[tex](\text{x},\text{y})\to (\text{x},-\text{y})\\\\(-5,-8)\to (-5,-(-8))\\\\(-5,-8)\to \boldsymbol{(-5,8)}\\\\[/tex]

This is the location of point A''

which points us to choice C as the final answer.

----------

Side note:

The composition of an x-axis reflection and y-axis reflection, in either order, is the same as a 180 degree rotation around the origin.

The rule for a 180 degree rotation is [tex](\text{x},\text{y})\to (-\text{x},-\text{y})\\\\[/tex]

The overall MSE for the time series would be (0 + 0 + 0.0289 + 0.0144 + 0.0044 + 0.0144)/6 = 0.0119. This value indicates that the forecasted values are close to the actual time series values, with a small error.

Mean squared error (MSE) is a standard measure of the average squared difference between predicted and actual value. Regression analysis frequently use it to assess a model's performance pattern. The sum of squared discrepancies between the predicted and actual values is multiplied by the number of observations in the dataset to derive the MSE. A lower MSE signifies a better match between the model and the data. In regression analysis, MSE is generally compared to the variance of the response variable, which is a measure of data dispersion. The MSE reveals how well the model fits the data when it is less than the variance.

How to solve?

To construct a time series plot for the given data, we can plot the values of the data against the weeks on the x-axis.

Week 1 | |

Week 2 | |

Week 3 | |

Week 4 | |

Week 5 | |

Week 6 | |

The three-week moving average for each week would be as follows:

Week 1: 16

Week 2: 11

Week 3: 12.67

Week 4: 11.33

Week 5: 12

Week 6: 11.33

The MSE for each week would be as follows:

Week 1: 0

Week 2: 0

Week 3: 0.0289

Week 4: 0.0144

Week 5: 0.0044

Week 6: 0.0144

The overall MSE for the time series would be (0 + 0 + 0.0289 + 0.0144 + 0.0044 + 0.0144)/6 = 0.0119. This value indicates that the forecasted values are close to the actual time series values, with a small error.

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The cost of the t-shirt is 3 and the cost of a hat is 2

Let the price of a t-shirt be x

and the price of a hat be y

cost of 5 t-shirt and a hat is 17

5x + y = 17 equation 1

cost of 2 t-shirt and a hat is 8

2x + y = 8   equation 2

subtracting equation 2 from equation 1

5x + y - (2x + y) = 17 - 8

5x + y - 2x - y = 9

3x = 9

x = 3

2x + y = 8

2 (3) + y = 8

y = 8 - 6

y = 2

Therefore, the cost of the t-shirt is 3 and the cost of a hat is 2

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The equation of line which passes through point (5,1) and having slope ½ is (y-1) = ½ (x-5).

What is the equation of a line?

The equation of a line is given as:

y = mx + c

The equation for the point on slope line is given as:

y - y1 = m ( x - x1 )

Substituting the above given values and the slope:

y - 1 = [tex]\frac{1}{2}[/tex] ( x - 5)

Hence, the equation of line which passes through point (5,1) and slope ½ is (y-1) = ½ (x-5).

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Answer: Answer is 3241 gm or 3.2 kg approx.

Step-by-step explanation:

Weight of the brick( in kg) =22 kg

Weight of the brick in gm= 22*1000 gm      (1 kg = 1000gm)

                                          = 22000 gm

Weight of bricks removed = 18759 gm

Weight of bricks left in the pile= 22000-18759gm

                                                   =3241 gm or 3.2 kg approx

Hence, the weight of the bricks left is 3.2 kg approx.

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Answer:

6

Step-by-step explanation:

for this I simply divided that numbers and I got my answer as 5.77 and I turned as 6

The correct option is B is correct that is by setting access to private on the class fields using the correct notation.

Given that,

Data hiding refers to the protection of sensitive data from outside code for an object. This is achieved using Options

A) Making use of the class methods' private access specifier.

B) By setting access to private on the class fields using the correct notation.

C) Using the class methods' public access specifier.

D) Using the class definition's private access specifier.

Whichever choice is accurate must be determined.

We know that,

The private modifier limits access to a class's methods or properties from any code that is outside the class, but the public access modifier permits a code from inside or outside the class to access the class's methods and properties.

Therefore, The correct option is B is correct that is by setting access to private on the class fields using the correct notation.

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Answer:

[tex](-1.3,-3.69)[/tex]

Step-by-step explanation:

Take the derivative of the function and set it equal to 0.

[tex]f(x)=x^2+2.6x-2[/tex]

[tex]f'(x)=2x+2.6 = 0[/tex]

Solve for x.

[tex]2x+2.6=0\\2x=-2.6\\x=-1.3[/tex]

Find [tex]f(-1.3)[/tex]

[tex]f(-1.3)=(-1.3)^2+2.6(-1.3)-2[/tex]

[tex]f(-1.3)=-3.69[/tex]

Mrs. Ibanez is experiencing symptoms of a potentially serious condition and should be evaluated by a medical professional as soon as possible.

Any medical disease that has the potential to get worse or be life-threatening if it is not treated quickly and effectively qualifies as potentially serious. Infections, wounds, and long-term medical issues like diabetes or heart disease or profound dehydration are a few examples of potentially catastrophic illnesses. These illnesses can range in severity from moderate to severe, and they might need to be treated right once to avoid long-term harm or other consequences. If you think you may have a dangerous issue, it's crucial to speak with a doctor right away so you can get the proper care and stop the problem from becoming worse.

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The probability that the sample proportion is at least 0.60 is 0.0294.

Given data,

In a local university, 70% of the students live in dormitories. A random sample of 75 students is selected for a particular study The probability that the sample proportion (the proportion living in the dormitories) is at least 0.60 is,

The sample size in this case,

n = 75

The proportion of students living in dormitories p,

⇒ 70% = 0.7

Since we are taking a distribution of 75-sample samples from the given population into consideration, we have:

The mean, p = 0.7

The standard deviation, s = √p * (1 − p)/n

                                           = √0.7 * (1 − 0.7)/75

                                           = 0.0529

Now, by figuring out their respective Z-scores, we can calculate the probability values corresponding to the supplied proportion values.

The Z-score for a proportion value of 0.60;

Z₀.₆₀ = (0.6 - p)/s

        = (0.6 - 0.7)/0.0529

        = -1.890

The Standard Normal Distribution table can be used to determine the corresponding probability. Consequently, the overall likelihood value for,

Z₀.₆₀ = -1.890

P-value from Z-Table,

P(x < 0.6) = 0.029355 = 0.0294

Hence, there is a 0.0294 percent chance that the sample proportion is at least 0.60.

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The point estimate of the population mean number of units sold per month is given by:

90.

The point estimate of a population parameter is obtained as the value of the parameter in the sample.

The parameter that we want to obtain the estimate in this problem is:

The mean.

The sample in this problem is given by:

94, 85, 85, 94, 92.

(number of units sold each month).

The sample mean is given by the sum of all observations in the sample divided by the number of observations, hence it is obtained as follows:

Mean = (94 + 85 + 85 + 94 + 92)/5 = 90.

For the fraction, we have that:

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The Prime Factorization of 54 in exponential form is 2¹ × 3³  .

The Exponential Form is a way of writing repeated multiplication that involves base and exponents . For Example : 5×5×5 = 5³ .

In the question ,

it is given that ,

the number is 54 ,

we have to find the prime factorization , and write it in the exponential form .

the number 54 can be expressed in factors as 2 × 3 × 3 × 3 .

which means 54 = 2 × 3 × 3 × 3 .

which can be written as 2 × 3³ .

So , the exponential form is 2¹ × 3³ .

Therefore , The Prime Factorization of 54 in exponential form is 2¹ × 3³  .

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Answer:

x = 90° + 180° × n, for all integers, n

Step-by-step explanation:

(sin x - 1)(sin x + 1) = 0

sin x = 1  or sin x = -1

The sine function has value 1 at 90° and all coterminal angles.

The sine function has value -1 at 270° and all coterminal angles.

Answer: x = 90° + 180° × n, for all integers, n

The weight of the newborn baby in pounds is 7pounds

Proportion is referred to as a part, share, or number considered in comparative relation to a whole. Proportion definition says that when two ratios are equivalent, they are in proportion. It is an equation or statement used to depict that two ratios or fractions are equal.

The relationship between a pound and stone is

1 pound = 1/14stone

therefore 1stone = 14pounds

The weight of the newborn baby is 1/2 stone

in pounds ,the weight of the baby is 14/2= 7pounds

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