which one is it ? please i need help

Answer:

I'm glad you asked!

Step-by-step explanation:

5/18 pounds per person.

he problem already says what to do, we need to divide because that's what Karen is doing, she is spliting or dividing the pounds of candy for 3 people. So, we just need to divide 5/6 by 3,

\(\frac{5}{6} \div 3 = \frac{5}{6} \times \frac{1}{3} =\frac{5}{18}\)

The time study analyst should account for at least 55 observations in order to calculate the mean time per item with a 95.5% confidence level and a 0.4 minute margin of error.

We can use the sample size calculation formula in a confidence interval to get the number of observations required for a time study with the specified parameters:

\(n = (Z * \sigma / E)^2\)

Where:

n = sample size

Z = The target confidence level's Z-score (95.5% translates to roughly 1.96)

σ = procedure standard variation (1.5 minutes per piece)

E = margin of error (0.4 minutes)

Plugging in the values, we can calculate the sample size:

\(n = (1.96 * 1.5 / 0.4)^2\)

\(n = (2.94 / 0.4)^2\)

\(n = 7.35^2\)

n ≈ 54.02

We round up the sample size to the next whole number because we can't have a portion of an observation:

n = 55

Therefore, the time study analyst should prepare for at least 55 observations to estimate the mean time per item with a margin of error of 0.4 minutes and a confidence level of 95.5%.

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Answer:

11%

Step-by-step explanation:

I think that's the answer just check first

Answer:

SINCE YOU WROTE ANYTHING ON MINES IM DOING THE SAME  Step-by-step explanation:

Answer:0.375

Step-by-step explanation:

3/4=0.75

0.75/2=0.375

(3/4)/2=0.375

Step-by-step explanation:

I don't know sorry I'm not good with fractions.

Answer:

2,400,056

Step-by-step explanation:

Answer:

2,400,056

Step-by-step explanation:

2 million= 2,000,000

four hundred thousand=400,000

fifty-six=56

Answer:

9.553×10^-26

Step-by-step explanation:

m= 9.1 ×10 ^-31

v = 3 × 108

= ( 9 .1 × 10 ^- 31) × ( 3 × 108 ) ^2

= 9 .552816 × 10 ^ -26

approximately

9.553×10 ^26

Answer:

C: -1

Step-by-step explanation:

2^3= 8

-3^2= 9

8-9= -1

Given :

Inserting the values in the equation provided,

we get :

Hence option(C) -1 would be correct

Answer:

\(C.\quad \dfrac{\sqrt{17}}{6}\)  

Step-by-step explanation:

We are given
\(\tan\theta = - \dfrac{\sqrt{19}}{\sqrt{17}} \\\\\)

Square both sides
\(\tan^2\theta = \left(- \dfrac{\sqrt{19}}{\sqrt{17}} \right)^2 = \dfrac{19}{17}\)

\(\tan \theta = \dfrac{\sin\theta}{\cos\theta}\\\\\tan^2 \theta = \dfrac{\sin^2\theta}{\cos^2\theta}\\\)

Substituting for \(tan^2 \theta\) and switching sides we get

\(\dfrac{\sin^2\theta}{\cos^2\theta} = \dfrac{19}{17}\\\\\text{Add 1 to both sides:}\\\\ \\ \dfrac{\sin^2\theta}{\cos^2\theta} + 1 = \dfrac{19}{17} + 1 \\\\)

\(\dfrac{\sin^2\theta + cos^2\theta}{\cos^2\theta} = \dfrac{19 + 17}{17} = \dfrac{36}{17}\)

\(\sin^2\theta + cos^2\theta = 1\)

giving

\(\dfrac{1}{\cos^2\theta} = \dfrac{36}{17}\)

\(\dfrac{17}{36} = \cos^2\theta\\\\ \cos^2\theta = \dfrac{17}{36}\\\\ \cos\theta = \sqrt{\dfrac{17}{36}}\\\\ \cos\theta = \dfrac{\sqrt{17}}{6} \\\\\)

This is choice C. You had it right

Answer:

216 square feet

Step-by-step explanation:

Cement patio outside of lawn

(36*13)-(28*9)

468-252

216

Answer:

216

Step-by-step explanation:

Answer:

59%

Step-by-step explanation:

19/32= 59.375 so rounded would be 59 :)

Answer:

59%

Step-by-step explanation:

32 shots is the total, so it's 100%

100% = 32 shots

1% = 32 ÷ 100 = 0.32

19 ÷ 0.32 = 59.375

59.375 estimated to 59

The expression that gives the magnitude of the magnetic field in the region r1 < c (at F) is\(B(r_1) = \frac{mu_0 i(r_{21 }- b_2)}{(2 \pi r_1(a_2 - b_2))}\). This expression considers the distance from the wire, the geometry of the wire, and the current in the wire to calculate the magnetic field magnitude.

The expression that gives the magnitude of the magnetic field in the region r1 < c (at F) is \(B(r_1) = \frac{mu_0 i(r_{21 }- b_2)}{(2 \pi r_1(a_2 - b_2))}\).

This expression is derived from the Biot-Savart law, which relates the magnetic field generated by a current-carrying wire to the distance from the wire and the geometry of the wire.

In this case, the expression takes into account the variables r1 (distance from the wire), c (outer radius of the wire), a (inner radius of the wire), b (distance from the center of the wire to the point F), i (current in the wire), and mu0 (the permeability of free space).

The expression includes the difference between the squares of r1 and b2 in the numerator, and the product of 2 pi r1 and the difference between the squares of a2 and b2 in the denominator.

This formulation accounts for the geometry of the wire and the distance from the wire, providing the magnitude of the magnetic field at point F.

It's important to note that without additional information or context, it's difficult to determine the specific values of the variables in the expression.

Hence, the expression that gives the magnitude of the magnetic field in the region r1 < c (at F) is \(B(r_1) = \frac{mu_0 i(r_{21 }- b_2)}{(2 \pi r_1(a_2 - b_2))}\).

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a) To find the equation of the line tangent to the graph of f at x = e^2, we need to find the slope of the tangent line and the y-intercept. The slope of the tangent line is given by the derivative of f evaluated at x = e^2: f'(e^2) = (1 - ln(e^2))/(e^2)^2 = (1 - 2)/e^4 = -1/e^4

The y-intercept is found by plugging x = e^2 into the original function and finding the corresponding y-value: f(e^2) = ln(e^2)/e^2 = 2/e^2

We can use this information to write the equation of the tangent line in point-slope form: y - f(e^2) = -1/e^4(x - e^2)

b) To find the x-coordinate of the critical point of f, we need to find the value of x at which f'(x) = 0 or is undefined.

f'(x) = (1 - lnx)/x^2

When we set f'(x) to 0, we get 1 - lnx = 0 lnx = 1 x = e.

As a result, the critical point is at x = e.To determine whether this point is a relative minimum, a relative maximum, or neither, we need to find the second derivative of f(x) and evaluate it at x = e.

f''(x) = -(1 + lnx)/x^3

Evaluating at x = e, we get: f''(e) = -(1 + ln(e))/e^3 = -(1 + 1)/e^3 = -2/e^3

Since the second derivative is negative, the critical point is a relative maximum.

c) To find the x-coordinate of the point of inflection, we need to find the value of x at which f''(x) = 0.

f''(x) = -(1 + lnx)/x^3

Setting f''(x) = 0, we get 1 + lnx = 0 lnx = -1 x = e^-1

So the point of inflection is at x = e^-1.

d) To calculate f(x) = lnx/x, we need to substitute the value of x into the function. f(x) = lnx/x

For example, if we want to calculate f(2) f(2) = ln(2)/2 = 0.693147180559945/2 = 0.346573590279973

So f(2) = 0.346573590279973

Answer:

9:15 PM

Step-by-step explanation:

1 hour and 40 minutes after 7:35 is 9:15

For given linear equation x will be 5.

What is a linear equation ?

A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form of a linear equation in one variable is of the form

Ax + B = 0

e.g. x-10=0. Here, x is a variable, A is a coefficient and B is constant.

The standard form of a linear equation in two variables is of the form

Ax + By = C

e.g. 2x-4y=10. Here, x and y are variables, A and B are coefficients and C is a constant.

Now,

As given linear equation is

15-x=10

x=15-10

x=5

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Answer:

One

Step-by-step explanation:

Set each equations equal to each other

\( {x}^{2} + 4 = 4x\)

\( {x}^{2} - 4x + 4\)

Find the discrimant.

\({ - 4 {}^{2} - 4(1)(4) } = 0\)

This means there is one real solution. Since the discramnt equal 0.

Answer:

The situation per week is 30 + 6n

where n is the number of weeks

Range of the function is 18 for the first four weeks of data

Step-by-step explanation:

Here, we are to use an arithmetic sequence for a representation.

The first term here is a which is 30 clients while the common difference of d is 6 new clients per week

So we can write the nth term of the sequence as;

Tn = a + (n-1)d

Tn = 30 + (n-1)6

Tn = 30+ 6n -6

Tn = 24 + 6n

where n is the number of weeks

Now for the second week we shall have a total of a+ d clients = 30 + 6 = 36

For the third we have 24 + 6(3) = 24 + 18 = 42

For the fourth, we have 24 + 6(4) = 24 + 24 = 48

Thus the range mathematically means the difference between the highest and lowest for that four weeks = 48-30 = 18

Answer:

A lawn-mowing company is trying to grow its business. It had 18 clients when they started its business and wants to increase by 4 new clients each week.

Use an arithmetic sequence to write a function to represent this real-world situation and determine the range of the function for the first four weeks of data.

f(x) = 4x + 18; 0 ≤ y ≤ 4

Answer:

No solution

Step-by-step explanation:

6X - 3Y = -9--------------(1)

- 2 X +Y= 5---------------(2)

from equation two,

Y = 5+2X------------------(3)

substitute equation (3) into equation (1)

6X-3(5+2X)= -9

opening bracket

6X-15-6X= -9

6X- 6X = -9+15

0 = 6

Answer:

Not entirely sure but im sure its no. 2

Step-by-step explanation:

Answer:

I think it's 2

Step-by-step explanation:

Answer:4.34

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

to find a proportion they must equal each other

8/4 in its simplest form is just 2

to make r/3 = 2 r must be 6

6/3 is 2

A. The model is not useful.

In regression analysis, the F-test is used to assess the overall significance of the regression model.

The p-value associated with the F-test represents the probability of obtaining the observed F-statistic (or a more extreme value) if the null hypothesis is true.

In this case, since the p-value is high (0.658), it indicates that there is not enough evidence to reject the null hypothesis.

Therefore, we fail to find a significant relationship between the predictor variables and the response variable, suggesting that the model is not useful in predicting or explaining the variation in the response variable.

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The area of the side of the cone is 100.53 cm² and the area of the cricle base is 50.27 cm² while the total surface area is  150.8 cm².

From the diagram, we are given:

base radius (r) = 4cm

slant height (l) = 8cm

(a) To find the area of the side of the cone, we need to find the slant height and the base perimeter.

Using the Pythagorean theorem, we can find the height of the cone:

height = √(l² -r²)

      = √(8² - 4²)

      = √48

      = 4√3 cm

The base perimeter is simply the circumference of the circle with radius 4 cm:

base perimeter = 2πr

              = 2π(4)

              = 8π cm

Now we can use the formula for the lateral surface area of a cone:

lateral surface area = 1/2 (base perimeter) (slant height)

                    = 1/2 (8π) (8)

                    = 32π cm²

                    = 100.53 cm²

Therefore, the area of the side of the cone is approximately 100.53 cm².

(b) The area of the circle base can be found using the formula:

base area = πr²

         = π(4)²

         = 16π cm²

         = 50.27 cm²

Therefore, the area of the circle base is approximately 50.27 cm².

(c) The total surface area of the cone is the sum of the lateral surface area and the base area:

total surface area = lateral surface area + base area

                  = 32π + 16π

                  = 48π cm²

                  ≈ 150.8 cm²

Therefore, the total surface area of the cone is approximately 150.8 cm².

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The 90% confidence interval is (2.76, 4.84).

The standard deviation is a measure of the amount of variation or dispersion of a set of values.  A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range.

Standard deviation may be abbreviated SD and is most commonly represented in mathematical texts and equations by the lower-case Greek letter σ (sigma), for the population standard deviation, or the Latin letter s, for the sample standard deviation.

Mean \($(\overline{\mathbf{x}})\) =3.8, sample standard deviation \($(\mathrm{s})\) =1.8, sample size     \($(\mathrm{n})\) = 10

since population standard deviation \($(\sigma)$\) is unknown and the value of \($\mathrm{n}$\) is less than 30, use. \($\mathrm{t}$\) - distribution

degrees of freedom =10-1=9

for 90% confidence level with degrees of freedom = 9

\($t_{\frac{\alpha}{2}}=1.833\) (from t- table)

formula: confidence interval for population mean. \($\mu=\bar{x} \pm t_{\frac{\alpha}{2}} *\left\{\frac{s}{\sqrt{n}}\right\}$\)

= 3.8 ± 1.833×\(\left\{\frac{1.8}{\sqrt{10}}\right\}$\)

= 3.8 ± 1.04

= (3.8 - 1.04, 3.8 + 1.04)

= (2.76, 4.84)

Therefore, the 90% confidence interval is (2.76, 4.84).

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Answer: x= 34

Step-by-step explanation:

The average rate of change of f(x)= 5x-2x squared from 1 to 4 is -7.

To find the average rate of change of the function f(x) = 5x - \(2x^2\) from 1 to 4, we need to calculate the slope of the secant line that passes through the points (1, f(1)) and (4, f(4)).

First, we need to find the y-coordinates of these points by plugging in the corresponding x-values into the function:

f(1) = 5(1) - \(2(1)^2\) = 3

f(4) = 5(4) - \(2(4)^2\) = -18

Therefore, the two points we need to connect with the secant line are (1, 3) and (4, -18).

The slope of the secant line passing through these two points is given by:

slope = (change in y)/(change in x) = (f(4) - f(1))/(4 - 1) = (-18 - 3)/(4 - 1) = -21/3 = -7

Therefore, the average rate of change of the function from 1 to 4 is -7.

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Use the kinematic formula

\({v_2}^2 - {v_1}^2 = 2a\Delta x\)

where \(v_1,v_2\) are initial/final velocities, \(a\) is acceleration, and \(\Delta x\) is displacement. We're given \(a=-5.00\frac{\rm m}{\rm s^2}\) and \(\Delta x=15.0\,\rm m\), and the car comes to a stop so \(v_2=0\). Solve for \(v_1\).

\(-{v_1}^2 = 2\left(-5.00\dfrac{\rm m}{\rm s^2}\right) (15.0\,\mathrm m) \\\\ ~~~~ \implies {v_1}^2 = 150.\dfrac{\rm m^2}{\rm s^2} \\\\ ~~~~ \implies v_1 = \sqrt{150.\dfrac{\rm m^2}{\rm s^2}} \approx \boxed{12.2 \dfrac{\rm m}{\rm s}}\)