records show that 10% of all college students are foreign students who also smoke. it is also known that 40% of all foreign college students smoke. what percent of the students at this university are foreign?

The circumference of the circle is 2π x 2, or 12.57 units.

To find the circumference of a circle, we use the formula C = 2πr, where C is the circumference, π is a constant value of 3.14, and r is the radius of the circle. In this case, the radius of the circle is 2 units. So, we plug the values into the formula and get 2π x 2 = 12.57 units. This means that the circumference of the circle is 12.57 units. To put it another way, the circumference is equal to the diameter of the circle (2 units) multiplied by the value of pi (3.14). Therefore, the circumference of a circle with a radius of 2 units is 12.57 units.

Learn more about circumference here

https://brainly.com/question/4268218

#SPJ4

The exponential function shown in the graph is f(x) = 2ˣ

An equation is an expression that contains numbers and variables linked together by mathematical operations of addition, subtraction, multiplication, division and exponents. An equation can either  be linear, quadratic, cubic, depending of the degree of the variable.

The standard form of an exponential function is:

y = abˣ

where a is the initial value and b is the multiplication factor.

The graph shown is an exponential function.

At the point (0, 1):

y = abˣ

substituting:

1 = ab⁰

a = 1

At the point (2, 4):

y = abˣ

substituting x = 2, y = 4 and a = 1:

4 = b²

b = 2

The exponential function is y = 2ˣ

Find out more on equation at: https://brainly.com/question/2972832

#SPJ1

Answer: To find the minimum value of c = x + 3y, you need to solve the optimization problem with a constraint or without any constraint.

Without a constraint:

The minimum value of c = x + 3y without a constraint is achieved when the partial derivatives of c with respect to x and y are equal to zero.

Let's take the partial derivative of c with respect to x:

dc/dx = 1

And with respect to y:

dc/dy = 3

Setting these equal to zero, we have:

1 = 0 and 3 = 0

Since the partial derivatives are not equal to zero, there is no minimum value of c without a constraint.

With a constraint:

If there is a constraint, such as a limit on x or y, then the minimum value of c can be found by using optimization techniques, such as the method of Lagrange multipliers.

Step-by-step explanation:

Answer:

x = 14

Step-by-step explanation:

[tex]8^{x-4}[/tex] = 8^10

[tex]8^{14 - 4}[/tex] = 8^10

8^10 = 8^10

The exact value of the trigonometric function sin (A + B) is equal to 1020 / 1189.

In this problem we must determine the exact value of the sine of the sum of two acute angles. There are acute angles in the first quadrant, thus:

sin θ > 0

cos θ > 0

tan θ = sin θ / cos θ

In addition, by trigonometric formulas:

cos θ = √(1 - sin² θ)

cos θ = 1 / √(tan² θ + 1)

Where θ is the angle, in degrees.

sin (α + β) = sin α · cos β + cos α · sin β

If we know that sin A = 40 / 41 and tan B = 20 / 21, then the exact value of sin (A + B) is:

cos A = √[1 - (40 / 41)²]

cos A = 9 / 41

cos B = 1 / √[1 + (20 / 21)²]

cos B = 21 / 29

sin B = √[1 - (21 / 29)²]

sin B = 20 / 29

sin (A + B) = (40 / 41) · (21 / 29) + (9 / 41) · (20 / 29)

sin (A + B) = 1020 / 1189

To learn more on trigonometric formulas: https://brainly.com/question/24377281

#SPJ1

Answer:

23

Step-by-step explanation:

so the sum of all side's of a triangle is 180

so if one angle is 62 n the other angle is 95 then to find the third angle you need to

[tex]62 + 95 + x = 180[/tex]

[tex]157 + x = 180[/tex]

[tex]x = 180 - 157[/tex]

[tex]x = 23[/tex]

hope it helps mate

have a nice day :?

Answer:

5^-18

Step-by-step explanation:

here is the answer please mark me as the brainliest

The exponential model is [tex]T(t)=69+(111)e^-^1^3^6^8^3^5^7^0^2^1^t[/tex] and It takes the cake 9.32 minutes to cool to the desired​ temperature

We can solve this by using Newton's Law of cooling,

[tex]T(t)=C+(T_o-C)e^k^t[/tex]

where

T(t) is the temperature at any given time

C is the surrounding temperature

T₀ is the initial temperature

k is a negative constant

t is the time

A cake recipe is baked until the center is 180 °F

T₀=180 ⇒ initial temperature

The room temperature is 69 °F

C = 69 ⇒ surrounding temperature

By using the table, substitute t and T to find the constant k

At t = 5 minutes, T = 125 °F

[tex]125=69+(180-69)e^k^t[/tex]

By subtracting 69 on both sides

[tex]56=(111)e^k^t[/tex]

Dividing both sides by 111

[tex]\frac{56}{111} =e^k^t[/tex]

Add ㏑ for both sides

[tex]ln(\frac{56}{111} )=ln(e^k^t)[/tex]

Dividing both sides by 5

k=- 0.1368357021

The exponential model is  [tex]T(t)=69+(111)e^-^1^3^6^8^3^5^7^0^2^1^t[/tex]

The cake cools at 100 °F and the desired​ temperature is 100°

T(t) = 100 ⇒ cake's temperature at t minute

Using the model above to find t

[tex]T(t)=69+(111)e^-^1^3^6^8^3^5^7^0^2^1^t\\\\100=69+(111)e^-^1^3^6^8^3^5^7^0^2^1^t[/tex]

Subtract 69 from both sides

[tex]39=(111)e^-^1^3^6^8^3^5^7^0^2^1^t[/tex]

Divide both sides by 111

[tex]\frac{39}{111} =e^-^1^3^6^8^3^5^7^0^2^1^t[/tex]

Applying ㏑ for both sides

[tex]ln(\frac{39}{111}) =e^-^1^3^6^8^3^5^7^0^2^1^t[/tex]

Dividing both sides by - 0.136835702

t=9.321711938

t ≅ 9.32 minutes

It takes the cake 9.32 minutes to cool to the desired​ temperature.

To know more about an exponential model:

https://brainly.com/question/14938119

#SPJ4

The exponential function to model the population of Valley View is [tex]y = 1800(1.012)^t[/tex].

What is an exponential function?

The formula for an exponential function is f(x) = a^x, where x is a variable and a is a constant that serves as the function's base and must be bigger than 0.

An exponential function is written in the form -

[tex]y=ab^t[/tex]

Here, y is the function, a is the base value b is the rate and t is time period.

The number of people in Valley view is 1800. So, the base is a = 1800.

The function y depicts the towns population.

Each decade the population grows by 12%.

The growth rate per year is = 12 / 10

The growth rate is 1.2%

The value for b will be = 1 + r

b = 1 + 1.2/100

b = 1 + 0.012

b = 1.012

So, the exponential equation will be -

[tex]y = 1800(1.012)^t[/tex]

Therefore, the exponential equation is [tex]y = 1800(1.012)^t[/tex].

To learn more about exponential function from the given link

brainly.com/question/12626186

#SPJ1

Step-by-step explanation:

The expression can be simplified as follows:

-12 + |-3| - |-14| = -12 + 3 - 14 = -23

So, the answer is -23.

Answer: -23

Step-by-step explanation: The absolute value symbols turn the numbers inside to positive. The subtraction symbols outside dont change. When doing this conversion the simplified version will be -12+3-14 which equals -23.

The value of the expression is 40.64.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

41 + (5/7)t

When t = -1/2

41 + (5/7)t

= 41 + 5/7 x (-1/2)

= 41 - 5/14

= (574 - 5) / 14

= 569/14

= 40.64

Thus,

The value is 40.64.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ1

Eliza is 212 feet above the ground as the given sector area of the half of the wheel is 5618 pi ft^2 and ride is stuck at 180 degrees.

Ferris wheel has a shape of a circle

So, we can use this formula

Area = πr²

Sector area of half the circle = πr²/2

From Eliza to the ground is the diameter of the wheel

5618 π ft² = πr²/2

r² = √2×5618ft²

r = 106 feet

The diameter of the wheel is twice the radius

= 2 × 106 feet = 212 feet

Therefore, Eliza is 212 feet above the ground.

Learn more about circles here brainly.com/question/29142813

#SPJ4

Answer:

So the expression is equivalent to 18x + 15.

Step-by-step explanation:

The expression 5(4x+3)-2x simplifies to:

= 20x + 15 - 2x (distributing the 5)

= 18x + 15 (combining like terms)

So the expression is equivalent to 18x + 15.

The two equations can be rearranged to get two equations with one variable on each side. The equations become 4a = -9 - 3b and 2a = -1 - 5b. By dividing both sides of the first equation by 4, the equation becomes a = -2.25 - 0.75b. Substituting this value of a into the second equation gives -4.5 - 3.75b = -1. Solving this equation for b gives b = 1.2.

4a + 3b = -9

2a + 5b = -1

4a = -9 - 3b

2a = -1 - 5b

a = -2.25 - 0.75b

-4.5 - 3.75b = -1

b = 1.2

a = -2.25 - 0.75(1.2)

a = -1.95

The given set of equations is a simultaneous equation. This means that both equations have the same two variables, a and b. To solve for a and b, we must rearrange the equations so that each equation has only one variable on one side. We can do this by subtracting 3b from the first equation and 5b from the second equation. This gives us the equation 4a = -9 - 3b and 2a = -1 - 5b.

Next, we divide both sides of the first equation by 4 to get a = -2.25 - 0.75b. We can then substitute this into the second equation to get -4.5 - 3.75b = -1. Solving this equation for b gives us b = 1.2. Finally, we can substitute this value of b back into the first equation to get a = -1.95. This means that the solutions for a and b are a = -1.95 and b = 1.2.

Learn more about equation here

https://brainly.com/question/29657992

#SPJ4

The total surface area of the pyramid is 100 + 4 x 50 = 100 + 200 = 300 square inches.

A square pyramid's surface area is calculated by summing the areas of its four lateral sides and base.

Since each side of the base of the pyramid measures 10 inches, the base has an area of 10 x 10 = 100 square inches.

Due to the fact that each lateral face is a triangle with a base of 10 inches and a height of 10 inches each, they each have an area of (1/2) x 10 x 10 = 50 square inches.

Therefore, the total surface area of the pyramid is 100 + 4 x 50 = 100 + 200 = 300 square inches.

To learn more about surface area, visit the link below:

https://brainly.com/question/29101132

#SPJ4

Rudy's timing in the most recent race is 312 minutes.

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is that Rudy has run many marathons and keeps track of all of his finishing times. At a race last month, he finished in 260 minutes. At his next race, he finished with a time that was 20% longer.

Rudy's timing in the most recent race can be calculated as -

{x} = 260 + 20% of 260

{x} = 260 + (20/100) x 260

{x} = 260 + 20 x 2.6

{x} = 260 + 52

{x} = 312

Therefore, Rudy's timing in the most recent race is 312 minutes.

To solve more questions on functions, visit the link below-brainly.com/question/17613163

#SPJ1

Answer: y+3= 1/7 * (x+8)

Step-by-step explanation:

Option C) is the correct graph that best represents the combination of both functions.

The graph, which plots time on the x-axis and temperature on the y-axis, displays an increasing function that depicts the temperature. The graph is divided into two sections: one shows a straight line with a positive slope to reflect the heater's contribution, and the other shows a curve to show the sun's contribution.

Option A) depicts a straight line that illustrates the rise in temperature brought on by the heater, but it omits the sun's influence. The intersection of these two functions is not depicted in this graph.

Option B) displays a curve that depicts the rise in temperature brought on by the sun, but it omits the impact of the heater. The intersection of these two functions is not depicted in this graph.

The sum of the two functions h(t) and s(t), which model the rise in pool temperature, can be written as follows:

c(t) = h(t) + s (t)

The specific functions h(t) and s(t) and their values at various times t would affect the graph of c(t).

Both the function h(t) and the function s(t) model the rise in temperature brought on by the sun and the heater, respectively.

As a result, Option C) is the correct graph that accurately depicts the union of the two functions.

To know more about Graph visit:

brainly.com/question/17267403

#SPJ1

Answer:

Its A.

Step-by-step explanation:

it just looks like a combination of the other 2

g⁻¹(x) = ∛(x²/2 + 3)  is the inverse of  the function g(x)= √(2x³-6)

In mathematics, the inverse function of a function g (also called the inverse of g) is a function that undoes the operation of g.

g(x)= √(2x³-6)

Let g(x) = y

So we can say y = √(2x³-6)

We will then make x the subject:

y = √(2x³-6)

y² = 2x³-6

y² + 6 = 2x³

2x³ = y² + 6

x³ = y²/2 + 6/2

x³ = y²/2 + 3

x = ∛(y²/2 + 3)

since x = g⁻¹(y)  = ∛(y²/2 + 3)

Thus, g⁻¹(x) = ∛(x²/2 + 3)      (Replace y with x)

Learn about inverse function on:

brainly.com/question/11735394

#SPJ1

Step-by-step explanation:

the slope is always the factor of x and the ratio

y coordinates difference / x coordinates difference

when going from one point on the line to another.

in short : y/x

the perpendicular slope is -x/y.

the ratio is turned upside down, and the sign is flipped.

so, the begin of our equation is

y = (1/3)x + b

b (the y-intercept, which is the y-value when x = 0) we get by using the given point and is coordinates:

-7 = (1/3)×6 + b = 2 + b

b = -9

so, the whole equation is

y = (1/3)x - 9

The relative minimum and the relative maximum for the attached graph over the interval [ 1, 5 ] of the function given in graph is equal to -14 and -3 respectively.

Graph is attached.

Function shown in the attached graph over the interval [ 1, 5 ] is :

Representing the parabola function.

Vertex representing lowest point of the graph in the interval [ 1, 5 ] is given by :

( 4.5 , -14 )

Vertex representing highest point of the graph in the interval [ 1, 5 ] is given by :

( 1.5 , -3)

Relative minimum and maximum is represented by the y -coordinate of the graph.

Lowest point gives relative minimum = -14

Highest point gives relative maximum = -3

Therefore, for the function in the graph the relative minimum = -14 and relative maximum= -3.

The above question is incomplete , the complete question is:

what are the relative minimum and relative maximum values over the interval [1, 5] for the function shown in the graph?

Graph is attached.

learn more about function here

brainly.com/question/12431044

#SPJ4

The two equations form a system of linear equations that has no solution are

y=3x+2

y=3x+(1/2)

What is the solution to an equation?

In order to make the equation's equality true, the unknown variables must be given values as a solution. In other words, the definition of a solution is a value or set of values (one for each unknown) that, when used as a replacement for the unknowns, transforms the equation into equality.

y=3x+2

y=3x+(1/2)

Equate both the equations to find x

3x+2 =3x+(1/2)

same term 3x cancels out

2=(1/2)

This is not true

So, two equations form a system of linear equations that has no solution are

y=3x+2

y=3x+(1/2)

To learn more about the solution of an equation from the given link

https://brainly.com/question/22688504

#SPJ1

After 10 years at 9% compound interest per annum, The amount will be £393.57.

The amount of money you will have after 10 years can be calculated using the formula for compound interest:

[tex]A = P * (1 + r/n)^{nt}[/tex]

where:

A is the final amount,

P is the initial amount (principal),

r is the interest rate as a decimal,

n is the number of times the interest is compounded per year,

t is the number of years the money is invested.

In this case:

P = £200

r = 9% = 0.09

n = 1 (because interest is compounded annually)

t = 10

So, plugging in the values, we get:

[tex]A = 200 * (1 + 0.09/1)^{1 * 10)} = 200 * (1.09)^{10}[/tex]

[tex]A = 200 * 1.96787 = 393.57[/tex]

So, after 10 years at 9% compound interest per annum, you will have £393.57.

Learn more about compound interest here https://brainly.com/question/14295570

#SPJ4

The value of a car that depreciates over time can be modeled by the function [tex]J(t)=27000(0.9)^{2t+2}[/tex] has an equivalent form of [tex]J(t) = 21870(0.81)^t[/tex].

A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output. Each function has a range, codomain, and domain. The usual way to refer to a function is as f(x), where x is the input. A function is typically represented as y = f. (x).

The value of the car is given as:

[tex]J(t)=27000(0.9)^{2t+2}[/tex]

The equation can be written as:

[tex]J(t)=27000(0.9)^{2t} (0.9)^2\\\\J(t) = 27000(0.81)^t(0.81)\\\\J(t) = 21870(0.81)^t[/tex]

Hence, the value of a car that depreciates over time can be modeled by the function [tex]J(t)=27000(0.9)^{2t+2}[/tex] has an equivalent form of [tex]J(t) = 21870(0.81)^t[/tex].

Learn more about functions here:

https://brainly.com/question/12431044

#SPJ1

The loss percentage on selling an article is, 75%.

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

Given that;

The loss made on selling an article is 25% of the cost price.

Let the cost price = 100

Hence, Selling price is,

⇒ 25% of cost price

⇒ 25% of 100

⇒ 25

Thus, The loss is,

⇒ Loss = cost price - selling price / cost price × 100

           = (100 - 25) / 100 × 100

          = 75%

Thus, The loss percentage on selling an article is, 75%.

Learn more about the percent visit:

https://brainly.com/question/24877689

#SPJ1

Answer: X= 5 ;  -11

To solve our problem lets work backwards.

x^2-6x=55. First we must subtract 55 from both sides our equation. That leaves us with x^2-6x-55=0.  

We next need to cancel out the number six. We also need to find two numbers that can be multiplied by one another to equal 55.

This would be 5 and -11. 5 and -11 can be added together to make -6, which is the negative integer for 6. They can also be multiplied together to make the negative integer of 55, which is -55.

This means that our X has two possible solutions.

Hence, X= 5 & -11

I hope this helps & Good Luck <3 !

The cost of each apple is $0.56 while the cost of each banana is $0.8

An equation is an expression that shows the relationship between two or more numbers and variables using mathematical operations. An equation can be linear, quadratic, cubic and so on, depending on the degree of the variable.

Let a represent the cost of each apples and b represent the cost of each bananas. Four apples and three bananas cost £4.48:

4a + 3b = 4.48      (1)

Also, three apples and four bananas cost £4.76, hence:

3a + 4b = 4.76    (2)

Solving both equations simultaneously gives:

a = 0.56, b = 0.8

The cost of apple is $0.56 while the cost of banana is $0.8

Find out more on equation at: https://brainly.com/question/2972832

#SPJ1

Answer: 2 c squared d + d c + 6 c squared d squared

Step-by-step explanation:   I looked it up

The simplified expression is j^-4k^-12

From the question, we have the following parameters that can be used in our computation:

j^-5k^-5 x jk^-7

Rewrite as

j^-5k^-5 x jk^-7 = j^-5 * j * k^-5k^-7

Apply the law of indices in the products

j^-5k^-5 x jk^-7 = j^-4 * k^-12

So, we have

j^-5k^-5 x jk^-7 = j^-4k^-12

Hence, the expression is j^-4k^-12

Read more about expression at

https://brainly.com/question/15775046

#SPJ1

The number of ways to select 9 players for the starting lineup from a team of 15 players  is 4862 ways.

The number of ways to select 9 players for the starting lineup from a team of 15 players can be calculated using the formula for combinations, which is given by:

C(n,k) = n! / (k! (n-k)!)

Where n is the total number of items, k is the number of items being selected, ! means factorial, and C(n,k) represents the number of combinations of k items from n.

Using this formula, the number of ways to select 9 players from a team of 15 players is:

C(15,9) = 15! / (9! (15-9)!) = 15! / (9! 6!) = 4,862

So, there are 4,862 ways to select 9 players for the starting lineup from a team of 15 players.

To learn more about combinations click on,

https://brainly.com/question/13480867

#SPJ4