HELP IM ALMOST DONE!!!!!!!!!!!!!!!!!!!!!!! PLS ILL GIVE BRAINLLIEST

Answer: 81.98274589 is what i got but it will be 81 hope this helped

Step-by-step explanation:

Answer:

B. x = 5 +i√5  and    x = 5 - i√5

Step-by-step explanation:

The function in variable w giving the cost C (in dollars) of constructing the box is C(w) = 30w² + 270/w. The result is obtained by using the formula of volume and area of the box.

We have a rectangular storage container without a lid.

The formula of volume of the box is

V = l × w × h

Where

So, the height is

10 = 2w × w × h

10 = 2w² × h

h = 10/2w²

h = 5/w²

To find the total cost, calculate the area of base and sides of the box!

See the picture in the attachment!

The base area is

A₁ = 2w × w = 2w² m²

The sides area is

A₂ = 2(2wh + wh)

A₂ = 2(3wh)

A₂ = 6wh

A₂ = 6w(5/w²)

A₂ = 30/w m²

The total cost is

C = $15(2w²) + $9(30/w)

C = $30w² + $270/w

The function of the total cost is

C(w) = 30w² + 270/w

Hence, the function of constructing the box is C(w) = 30w² + 270/w.

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Answer:

a₄ = 320

Step-by-step explanation:

To obtain a term in a geometric sequence , multiply the previous term by the common ratio r

r = \(\frac{a_{2} }{a_{1} }\) = \(\frac{20}{5}\) = 4 , then

a₄ = 4 × a₃ = 4 × 80 = 320

We can write the following two linear equations to represent the distance each animal can travel in the race:

d1 = r1 * t

d2 = r2 * t

Let's call the distance that the first animal can travel in a certain amount of time "d1" and the distance that the second animal can travel in that same amount of time "d2". We can write the following two linear equations to represent the distance each animal can travel in the race:

d1 = r1 * t

d2 = r2 * t

where "r1" is the rate of the first animal, "r2" is the rate of the second animal, and "t" is the time that the race lasts. These two equations show how the distance each animal can travel is proportional to their rate and the time that the race lasts.

In this model, the variables are defined as follows:

d1 = distance traveled by the first animal

d2 = distance traveled by the second animal

r1 = rate of the first animal

r2 = rate of the second animal

t = time the race lasts

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The independent variable of a boxplot is categorical. This means that variable used to create boxplot consists of distinct categories rather than continuous numerical values. The boxplot allows to visualize and compare the distribution of a quantitative variable across different categories .

In statistical analysis, the independent variable is the variable that is manipulated or controlled in order to observe its effect on the dependent variable. In the case of a boxplot, the independent variable is typically a categorical variable. This means that it consists of distinct categories or groups that are not inherently ordered or continuous.

For example, in a study comparing the heights of individuals from different countries, the independent variable would be the country itself, which is a categorical variable. The heights of individuals would be the dependent variable, and the boxplot would show the distribution of heights for each country.

By using a boxplot, we can easily compare the distribution of a quantitative variable across different categories or groups and identify any differences or patterns that may exist. It provides a visual summary of the minimum, first quartile, median, third quartile, and maximum values within each category, allowing for easy comparisons and identification of outliers.

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Answer:

The answer is 3.

Step-by-step explanation:

Plug in, combine, solve.

\(m = - 3 \\ {m}^{2} + 5m + 9\\ ( - 3)^{2} + 5( - 3) + 9 \\ 9 + 5( - 3) + 9 \\ 9 - 15 + 9 \\ - 6 + 9 \\ 3\)

The fee for a private vehicle at Arches National Park during peak visiting time is $2.

Let's assume that v represents the fee for a private vehicle in dollars. According to the given information, the total earnings during peak visiting time at Arches National Park is $115,200. This amount is 3,600 times the sum of $30 and v.

To express this situation as an equation, we can set up the following equation:

115,200 = 3,600 * (30 + v)

We multiply the sum of $30 and v by 3,600 because the total earnings are 3,600 times that value. Solving this equation will give us the value of v, the fee for a private vehicle.

To solve the equation, we start by dividing both sides by 3,600:

115,200 / 3,600 = 30 + v

This simplifies to:

32 = 30 + v

Next, we subtract 30 from both sides to isolate v:

32 - 30 = v

2 = v

Therefore, the fee for a private vehicle at Arches National Park during peak visiting time is $2.

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Answer:

Step-by-step explanation:

3x² - 3x + 7 = 0

a = 3 ; b = -3 and c = 7

D = b² - 4ac = (-3)² - 4*3*7

D = 9 - 84 = - 75

D = 75i²

√D = √75i² = \(\sqrt{5*5*3 * i * i}= 5i\sqrt{3}\)

\(x = \dfrac{-b+\sqrt{D}}{2a} \ ; \ x=\dfrac{-b-\sqrt{D}}{2a}\\\\ \\x=\dfrac{3+5i\sqrt{3}}{6} ; \ ; x = \dfrac{3-5i\sqrt{3}}{6}\\\\\\x =\dfrac{3}{6}+\dfrac{5i\sqrt{3}}{6} ; \ ; x=\dfrac{3}{6}-\dfrac{5i\sqrt{3}}{6}\\\\\\Solution:\\\\x=\dfrac{1}{2}+\dfrac{5\sqrt{3}}{6}i ; \ ; x=\dfrac{1}{2}-\dfrac{5\sqrt{3}}{6}i\)

Sheila will earn $36 in interest in one year.Sheila opens a savings account with $720 and earns 5% interest per year, not compounded. The task is to calculate the amount of interest she will earn in one year, rounded to the nearest penny.

To calculate the interest Sheila will earn in one year, we can use the formula: Interest = Principal * Rate.

Given that Sheila opens a savings account with $720 and earns 5% interest per year (not compounded), we can substitute the values into the formula:

Interest = $720 * 0.05 = $36.

Therefore, Sheila will earn $36 in interest in one year.

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Answer:

4/3 or 1 1/3

Step-by-step explanation:

cube root of 64 = 4

cube root of 27 is 3

4/3 or 1 1/3

The monomial of the expression given the cube of that monomial -0.001a^(3n+3) is; x = (-1/10)a^(n + 1)

A monomial is defined as a polynomial, that has only one term. A monomial is also defined as an algebraic expression possessing a single term but can as well possess multiple variables as well as a higher degree also.

We are given the expression;

x³ = -0.001a^(3n + 3)

Now, -0.001 can also be expressed as -1/10³. Thus, we have;

x³ = (-1/10³)a^(3n + 3)

Factorizing the exponent gives;

x³ = (-1/10³)a^[3(n + 1)]

Since the terms are both cubed, then we can write as;

x³ = [(-1/10)a^(n + 1)]^3

Taking the cube root of both sides gives us;

x = (-1/10)a^(n + 1)

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The complete question is;

Find the monomial if the expression is the cube of that monomial -0.001a^(3n+3)

a. The area of one window is 0.72 m².

b. The area of the vent, rounded to one decimal place is 0.2 m².

c. The area of the rectangular part of the wall is 13 m²

In Mathematics and Geometry, the area of a rectangle can be calculated by using the following mathematical equation:

A = LB

Where:

By substituting the given parameters into the formula for the area of a rectangle, we have the following;

Area of one window = 1.2 × 0.6

Area of one window = 0.72 m²

Part b.

In Mathematics and Geometry, the area of a circle can be calculated by using this mathematical equation (formula):

Area of circle = π × (radius)²

Area of vent = 3.14 × (0.5/2)²

Area of vent = 0.19625 ≈ 0.2 m².

Part c.

Area of rectangular part of the wall = 2.6 × 5

Area of rectangular part of the wall = 13 m²

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Answer:

x=sint

Differentiating w.r.t. t, we get,

dt

dx

​

=cost

y=cos2t

Differentiating w.r.t. t, we get,

dt

dy

​

=−2sin2t

Thus,  

dx

dy

​

=−

cost

2sin2t

​

dx

dy

​

=

cost

−4sintcost

​

=−4sint

Step-by-step explanation:

Answer:

$9.98 :)

Step-by-step explanation:

just multiply the tax (0.085) by the price ($9.20) then add the initial price ($9.20) to that.

The arc length of the polar curve r = e^5θ from 0 to 2π is √26 [(e^10π - 1) / 5].

To find the arc length of a polar curve, we use the formula:

L = ∫[a,b] √(r(θ)² + [dr(θ)/dθ]²) dθ

where r(θ) is the polar equation of the curve, and dr(θ)/dθ is its derivative with respect to θ.

In this case, we have r(θ) = e^5θ, so:

dr(θ)/dθ = 5e^5θ

Plugging these into the arc length formula, we get:

L = ∫[0,2π] √(e^10θ + (5e^5θ)²) dθ

Simplifying the integrand, we have:

L = ∫[0,2π] √(e^10θ + 25e^10θ) dθ

L = ∫[0,2π] √(26e^10θ) dθ

L = √26 ∫[0,2π] e^5θ dθ

Using the formula for the integral of e^x, we get:

L = √26 [e^5θ / 5] |_0^(2π)

L = √26 [(e^10π - 1) / 5]

So the arc length of the polar curve r = e^5θ from 0 to 2π is √26 [(e^10π - 1) / 5].

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Amy sold 50 boxes of Thin Mints and 80 boxes of Caramel Delights.

We assume Amy sold x boxes of Thin Mints and y boxes of Caramel Delights.

We will set up two equations:

Multiplying first equation by 5, we get:

5x + 5y = 650

Now, we subtract from second equation:

5x + 6y - (5x + 5y) = 730 - 650

y = 80

Substituting value of y into first equation:

x + 80 = 130

x = 130 - 80

x = 50

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Answer:

ED ≈ 2.6 units

Step-by-step explanation:

Using the Sine rule in Δ DEF

\(\frac{FD}{sin115}\) = \(\frac{ED}{sin20}\)

\(\frac{6.95}{sin115}\) = \(\frac{ED}{sin20}\) ( cross- multiply )

ED sin115° = 6.95 sin20° ( divide both sides by sin115° )

ED = \(\frac{6.95sin20}{sin115}\) ≈ 2.6 ( to the nearest tenth )

Answer:

(-7,2) is a solution but where is the question?

Step-by-step explanation:

Answer:

It is.

Step-by-step explanation:

I need the question though....

Put it DB and I'll answer!

The correct option is statistical inference (b).

The professor uses sample data from the population to determine the average age. Anytime inferential statistics or statistical inference is used to make inferences from samples.

Instead of gathering data from the entire institution, the professor took age samples from a class and used those data to draw conclusions about the entire university.

Descriptive statistics in statistics help you describe the facts, whereas inferential statistics assist you in drawing conclusions from the data.

Data from the sample are used in inferential statistics, which allows you to generalise about the population.

Inference generally refers to "guessing," which involves drawing conclusions about something.

So, drawing conclusions about the population is what is meant by statistical inference. It makes use of a number of statistical analytic tools to draw a conclusion about the population.

Therefore, the correct option is statistical inference.

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The volume of the hemisphere (or the igloo) is approximately 369.2 cubic meters.

The volume of a hemisphere is given by the formula:

\(V = (2/3)πr^3\)

where r is the radius of the hemisphere.

Given that the diameter of the hemisphere measures 11.2 m, the radius is half of that:

r = d/2 = 11.2/2 = 5.6 m

Substituting this value into the formula, we get:

V = (2/3)π(5.6)^3

= (2/3)π(175.616)

= 369.2 cubic meters (rounded to one decimal place)

Therefore, the volume of the hemisphere (or the igloo) is approximately 369.2 cubic meters

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Answer:

B.   3,158

Step-by-step explanation:

h(x) = -49x − 125

Let x = -67

h(-67) = -49(-67) − 125

          =3283-125

          = 3158

Answer:

Answer B

Step-by-step explanation:

To find the value of h(-67) for the function h(x) = -49x - 125,

we substitute -67 for x in the function and evaluate it.

h ( - 67 ) = - 49 ( - 67 ) - 125

Now we can simplify the expression:

h ( -67 ) = 3283 - 125

h ( -67 ) = 3158

Step-by-step explanation:

Only Q4 has clear details

therefore, solving Question 4,

1 euro = $1.17

then,  €20.46 =20.46×1.17 = $23.93.

1 pound =1.28 dollars.

then,  £12.60 = 12.60×1.28 =$16.128

therefore, MP3 in pound is cheaper in dollar by $7.81.

Answer: To have a real number in the denominator

Step-by-step explanation:

Ok, a quotient between two complex numbers can be written as:

\(\frac{A + Bi}{C+Di}\)

Now, when we do these types of divisions, we multiply and divide by the same number (so in essence we are multiplying by one) that is the conjugate of the denominator.

Remember that for a complex number:

Z = A + Bi

the conjugate is = A - Bi.

Then, wen we multiply the denominator by it's conjugate, we have:

(C + Di)(C - Di) = C^2 + D*C*i - D*C*i + (D*i)*(-D*i) = C^2 + D^2

So now we have a real number in the denominator (the imaginary part of this number is equal to zero)

So the answer to the question is:

"To have a real number in the denominator"

Answer:

$30.41

Step-by-step explanation:

To find the tax she paid take the total amount times the rate of tax

24.20x.05=1.21

Then add the tax to the amount she paid before tax was added and the tip

$1.21+$24.20+$5=$30.41

So she spent $30.41 at the restaurant

Answer:

16

Step-by-step explanation:

Ok, so to solve for the side, You have to have the base, area, and gamma of the triangle.

Since we already have the base (12), we'll start with the area.

We already have the height, so it's pretty simple.

Take the base and the height and multiply them, then divide by 2.

(bxa/2)

12 x 16 = 192

192 / 2 = 96

So, the area is 96.

The gamma is simple, since this is a right triangle, the gamma is 90.

And with this information, the missing side is 16

c = 16