PLEASE PLEASE SOMEONE HELP WITH THIS QUESTION!! 15 POINTS AND I WILL AWARD BRAINIEST!!!!

The length of r, to the nearest 10th of an inch, is 2.4 inches.

The relationship between the sides and angles of non-right (oblique) triangles is defined by the Law of Sines. Simply put, it states that the ratio of the length of a triangle's side to the sine of the angle opposite that side is the same for all triangle sides and angles.

Given that in ΔQRS, s = 5.2 inches, ∠S=129° and ∠Q=30°. The value of side r will be calculated by using the sin angle theorem.

The value of r is,

r / sin21 = s / sin129

r = 5.2 x ( sin21/sin129)

r = 5.2 x 0.46

r = 2.4 inch

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We're asked to find inverse of the function,

[tex]\longrightarrow\rm{f(x)=\dfrac{e^x-e^{-x}}{e^x+e^{-x}}+2}[/tex]

Take [tex]\rm{y=f(x).}[/tex]

[tex]\longrightarrow\rm{y=\dfrac{e^x-e^{-x}}{e^x+e^{-x}}+2}[/tex]

Subtract 2.

[tex]\longrightarrow\rm{y-2=\dfrac{e^x-e^{-x}}{e^x+e^{-x}}}[/tex]

We apply componendo - dividendo rule.

[tex]\rm{\dfrac{a}{b}=\dfrac{c}{d}\quad\iff\quad\dfrac{b+a}{b-a}=\dfrac{d+c}{d-c}}[/tex]

Thus,

[tex]\longrightarrow\rm{\dfrac{y-2}{1}=\dfrac{e^x-e^{-x}}{e^x+e^{-x}}}[/tex]

[tex]\Longrightarrow\rm{\dfrac{1+(y-2)}{1-(y-2)}=\dfrac{(e^x+e^{-x})+(e^x-e^{-x})}{(e^x+e^{-x})-(e^x-e^{-x})}}[/tex]

[tex]\longrightarrow\rm{\dfrac{y-1}{3-y}=\dfrac{2e^x}{2e^{-x}}}[/tex]

[tex]\longrightarrow\rm{\dfrac{e^x}{e^{-x}}=\dfrac{y-1}{3-y}}[/tex]

[tex]\longrightarrow\rm{e^{2x}=\dfrac{y-1}{3-y}}[/tex]

[tex]\longrightarrow\rm{(e^x)^2=\dfrac{y-1}{3-y}}[/tex]

Take square root.

[tex]\longrightarrow\rm{e^x=\sqrt{\dfrac{y-1}{3-y}}}[/tex]

Take natural logarithm.

[tex]\longrightarrow\rm{x=\log_e\sqrt{\dfrac{y-1}{3-y}}}[/tex]

[tex]\longrightarrow\rm{x=\dfrac{1}{2}\log_e\left(\dfrac{y-1}{3-y}\right)}[/tex]

Now take [tex]\rm{x=f^{-1}(y).}[/tex]

[tex]\longrightarrow\rm{f^{-1}(y)=\dfrac{1}{2}\log_e\left(\dfrac{y-1}{3-y}\right)}[/tex]

Replace y by x and finally we get,

[tex]\longrightarrow\rm{\underline{\underline{f^{-1}(x)=\dfrac{1}{2}\log_e\left(\dfrac{x-1}{3-x}\right)}}}[/tex]

This is the inverse of the given function.

According to the given statement the area of the cross section of the cone is 72 square units.

a solid produced by rotating one of the legs of a right triangle. A solid that is surrounded by a circle and other closed planar base and indeed the surface created by line segments connecting each point here on base's perimeter to a single vertex is known as a right circle cone; for more information, see the Density Formulas Table.

From the given information the height is 16 inches and the radius is 4.5 inches becuase the cone is sliced by a plane that passes through the center of the base, and also passes through the top vertex

So, The radius would be half the base, so the base would be 4.5 * 2 = 9 inches.

The area of the cross section of the cone is found by multiplying the base by the height, then dividing by two.

Area of the cross section of the cone = (9 x 16)/2 = 144

144 / 2 = 72 square inches.

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The process to calculate slope of  line is explained below.

The Slope of line passing through two points (a,b) and (c,d) can be calculated by using  formula ;

slope = (d - b)/(c - a) ;

The slope of a line is denoted by letter "m" .

For Example : If the line is passing through the points (0,2) and (3,8)  .

on comparing we get the values as a = 0 , b = 2 , c = 3 and d = 8 .

On substituting values in the slope formula that is mentioned above  ,

we get ;

Slope(m) = (8 - 2)/(3 - 0)

On Simplifying further ,

we get ;

= 6/3

= 2 .

So , the slope of line will be = 2 .

The given question is incomplete , the complete question is

How do you calculate slope of a line quickly ?

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Answer:

x >= 1/3

Step-by-step explanation:

y = (e^x + 1)/3

x = (e^y + 1)/3   ==> inverse function is when you switch x and y

3*x = 3 * (e^y + 1)/3   ==> solve for y by first multiplying both sides by 3

3x = e^y + 1

3x - 1 = e^y + 1 - 1

3x - 1 = e^y  ==> now take natural log on each side to isolate y

ln(3x - 1) = ln(e^y)

y = ln(3x - 1)  ==> simplify

[tex]f^{-1}[/tex](x) = ln(3x - 1)  ==> plug in [tex]f^{-1}[/tex](x) for y to indicate the inverse function

3x - 1 >= 0  ==> you can't have the log function of a negative number

3x - 1 + 1 >= 0 + 1  ==> add 1 on both sides to isolate x

3x >= 1

3x/3 >= 1/3

x >= 1/3

The question uses 6 mathematical phrases. The coefficient is made up of two integers, and the other variables are x, y, z, and A.

A mathematical expression is a sentence that describes the relationship between two or more concepts and one or more symbols. There are many distinct words, including numbers, variables, and variables with coefficients. Different mathematical operators can be used to denote an equation, including the signs for addition and subtraction, plus and minus, multiplication and division, equal and inequal signs, and so on.

Using the formula above, 5xyA2 = 3xyz

There are six words and one equal sign, as we can see.

A, B, C, and There are six words and one equal sign, as we can see.

Five, three, and A are numerals and four variables, respectively. The coefficient of the variables is represented by the numbers.

A, y, and x are all used twice, as well. A2 or the square of A is how you write the product of A and A.

When we multiply 5 by x, y, and A2, we get the formula 3xyz, where 3 is multiplied by x, y, and z.

hence, we determine 6 terms in the question

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Answer:

315

Step-by-step explanation:

multiply (3.78x10^6) first to get 3780000 then divide 3,780,000 by 12,000 to get 315

To find the missing term, we can use the expansion of the square of a binomial, which is given by the formula (a + b)^2 = a^2 + 2ab + b^2. In this case, the binomial is x + 12, so we can use the formula like this:

[tex](x + 12)^2 = x^2 + 2 * x * 12 + 12^2[/tex]

Therefore, the missing term is 144.

You can also find the missing term by expanding the left-hand side of the equation using the same formula:

[tex](x + 12)^2 = (x^2 + 24x) + __[/tex]

When we expand the left-hand side using the formula, we get:

[tex](x + 12)^2 = x^2 + 24x + 144[/tex]

So the missing term is also 144.

The exponential function that goes through the points (0, 14) and (3, 896) is y = 14·3ˣ. This function has a base of 3 and a coefficient of 14.

An exponential function in the form y =abˣ is a function

where y is equal to a multiplied by b raised to the power of x.

To find the function that goes through the points (0, 14) and (3, 896),

We can write the following equation to find the base of the exponential function that goes through the points (0, 14) and (3, 896):

b³ = 896/14

We can then solve for b by taking the cube root of both sides of the equation to get:

b = 3

Now that we know the base of the function, we can use the point (0, 14) to find the value of the coefficient a.

Since the x-value of this point is 0, we can plug 0 in for x in the exponential function y=abˣ to get:

y = ab⁰ = a

Since the y-value of the point (0, 14) is 14, we can set this equal to a to solve for the value of a:

a = 14

So, the exponential function is y = 14·3ˣ

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The required value zeros of the given polynomial are given as -1, -2, and -3.

Zeros of the polynomial function are the values of the dependent variable, when putting that value in the expression, the expressions explicitly give zero.

Here,
Let the given expression is equal to zero,
x³+ 6x²+ 11x+ 6 = 0

Factorization of the above expression gives.
(x + 1)(x + 2)(x+3) = 0

Now, for the zeros,
x + 1 = 0;  x +2 = 0;  x + 3 = 0
x = -1     ;  x = -2    ;  x = -3  

Thus, the zeros of the given expression's zeros are -1, -2, and -3.

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The correct answer for this is x= -1, x = -2 and x =-3

Answer:

The total cost of the materials for the pillows is $172.37

Step-by-step explanation:

First, we need to calculate how many yards of each type of fabric Kelly needs to buy. She needs 2 linen pillows, which means she needs 22 = 4 yards of linen fabric.

She also needs 2 satin pillows, which means she needs 22 = 4 yards of satin fabric.

She also needs 1 faux fur pillow, which means she needs 12 = 2 yards of faux fur fabric.

The total cost of the linen fabric is 4*$13.12 = $52.48.

The total cost of the satin fabric is 4*$9.99 = $39.96.

The total cost of the faux fur fabric is 2*$14.99 = $29.98.

The total cost of the materials for the pillows is $52.48 + $39.96 + $29.98 = $122.42.

Finally, Kelly needs to buy 5 pillow inserts at $9.99 each, which means she needs to spend 5*$9.99 = $49.95 on pillow inserts.

The total cost of the materials for the pillows is $122.42 + $49.95 = $172.37.

On solving the provided question, we can say that - There exist 333 integers smaller than 1000 that are evenly divisible by 3 if you divide 1000 by 3, which results in 333 with a residual of 1.

The divisibility rule is a concise and practical approach to check, often by looking at the integer's digits, whether a given integer is divisible by a given set divisor without actually executing division. Without actually doing the division procedure, you may quickly discover if a given number can be divided by a defined divisor using the divisibility test. When dividing two numbers exactly, the quotient must be an integer and the remainder must be zero.

here,

1000/3

remainder = 1

divisor = 333

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To express a mathematical operation symbolically, we employ a mathematical expression.

In mathematics, an expression is a sentence that has at least two terms and an operator in the middle. Expressions may be divided into two categories: numerical expressions, which include simply numbers, and algebraic expressions, which contain both numbers and variables. A mathematical expression consists of two parts: terms and operator, where terms refer to variables and integers. It is referred to as a constant term if an expression just contains numbers, and it is known as a coefficient if it also contains numbers and a variable.

We utilize expressions to symbolically represent any mathematical activity as well as mathematical models. The specifics of our computation, for instance, can be succinctly represented in terms of two or more mathematical terms. We can identify unknown numbers with the equal sign, allowing us to resolve difficult issues. In real life, we utilize expressions to figure out how much we make and spend, how quickly things change, how long it will take to go a certain distance, and other things. When calculating the rate of change, we use the differentiated term dy/dx. When calculating speed, time, and distance, as well as time and speed, we employ equations with variables.

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Answer:

To try and relate or understand our feelings and try and give an example. For example the expression “it’s raining cat’s and dog’s” well that means it’s raining heavily!

Hope I helped

Step-by-step explanation:

the placebo effect means in this specific situation that The benefit is due to the fact that the co-workers are given a "treatment" (coffee, although decaffeinated) and not an effect of the "active ingredient" (caffeine).

Therefore, it appears that Janae is serving decapitated coffee to its customers, who have said that it has given them more energy. We want to examine the placebo effect, and when we think of the placebo effect, we imagine that a guy should publish. The best response you have provided is to recognize that they are receiving treatment, even though it is not caffeine, and causing them to believe that they are experiencing an increase in energy and that it is not the result of an active ingredient. As a result, they are receiving treatment and are having an impact by which. They aren't actually being impacted by the caffeine, though. You will typically feel more energized as a result of that.

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Answer:

D

Step-by-step explanation:

( g-h)(n).

n+5 - (n^2-5n)

-n^2+5n+n+5

-n^2+6n+5

The function H(x) = 3x⁴ + 2x — 5/x + 9x³ - 7 is not a polynomial function

A polynomial function is a function in an equation, such as the quadratic equation, cubic equation, etc., that only uses non-negative integer powers or only positive integer exponents of a variable.

A polynomial with an exponent of 1 is, for instance, 2x+5.

The given polynomial in standard form is written as

H(x) = 3x⁴ + 2x — 5/x + 9x³ - 7

H(x) = 3x⁴ + 9x³ + 2x  - 7 - 5x⁻¹

this shows that on of the term has a negative exponent 5x⁻¹ and hence not a polynomial

the leading coefficient is 3

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The girl's basketball team won 75 games and the boy's basketball team won 151 games.

Let's assume the number of games the girl's basketball team won "g," and the number of games the boy's basketball team won "b."

We know that the total number of games won by both teams is 226, so we can set up our first equation as follows:

g + b = 226

We also know that the boy's basketball team won one more than twice as many games as the girl's basketball team. We can represent this as follows:

b = 2g + 1

Now we have two equations and two unknown values, so we can solve for g and b using algebra. Let's substitute the second equation into the first equation to eliminate one of the unknowns:

g + (2g + 1) = 226

This simplifies to:

3g + 1 = 226

Subtracting 1 from both sides gives us:

3g = 225

Dividing both sides by 3 gives us:

g = 75

Now that we know the value of g, we can substitute it back into the second equation to solve for b:

b = 2 x 75 + 1 = 151

Therefore, the girl's basketball team won 75 games and the boy's basketball team won 151 games.

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The quadratic equation in standard form given the sum and product of roots is

x² - (α + β)x + αβ = 0.

Polynomial is an equation written as the sum of terms of the form kx^n.

where k and n are positive integers.

We have,

A polynomial with degree 2 is called a quadratic equation.

Now,

The standard form of a quadratic equation is ax² + bx + c.

Now,

Let the roots of the quadratic equation be α and β.

α + β = -b/a

αβ = c/a

Thus,

The quadratic equation is x² - (α + β)x + αβ = 0.

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Answer:

y = 1x+-5

Step-by-step explanation:

The slope is going up hill so there for the slope is positive. The y-intercept is -5 bc the line crosses at -5 on the y-axis.

The resultant answer after solving the given inequality by taking the subject x is x < (12 + 2y)/3.

An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way.

The majority of the time, size comparisons between two digits on the number line are made.

So, we have the inequality:

3x - 2y < 12

Now, solve the inequality by taking x as the subject as follows:

3x - 2y < 12

3x < 12 + 2y

3x/3 < 12/3 + 2y/3

x < (12 + 2y)/3

Therefore, the resultant answer after solving the given inequality by taking the subject x is x < (12 + 2y)/3.

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Correct question:

What is the solution to the inequality 3x - 2y < 12?

The nature of roots of the quadratic equation ax²+bx+c= 0 can be describe in three ways depending on the value of b²-4ac.

For quadratic equation ax²+bx+c=0 if

Case 1) If b²-4ac>0  then the roots of equation will be real and distinct.

Case 2) If b²-4ac=0  then roots will be real and equal.

Case 3) If b²-4ac<0 then roots will be imaginary and complex number pairs.

also a) if b2-4ac >0 and perfect square then the roots are real,distinct, and rational

b) if b2-4ac>0 and not a perfect square then the roots are real, distinct but irrational.

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Answer:

In the set {1, 1, 2, 2, 3, 3, 4, 4}, the value that occurs most frequently is 1, 2, 3, and 4, so the mode of this set is 1, 2, 3, and 4...

The mode of a set of numbers is the value that occurs most frequently in the set. In the set {1, 1, 2, 2, 3, 3, 4, 4}, the value that occurs most frequently is 1, 2, 3, and 4, so the mode of this set is 1, 2, 3, and 4.

It's important to note that a set of numbers can have more than one mode if multiple values occur with the highest frequency. A set of numbers that has multiple modes is called a multimodal set. In the example set {1, 1, 2, 2, 3, 3, 4, 4}, all four values occur with the same frequency, so the set is multimodal.

On the other hand, if no value occurs more frequently than any other value, the set is said to have no mode. For example, the set {1, 2, 3, 4, 5} has no mode because all values occur with the same frequency.

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The discriminant of a 2x2 matrix is equal to the determinant of the matrix squared. The determinant is calculated by subtracting the product of the two diagonal elements from the product of the two off-diagonal elements

To find the discriminant of a 2x2 matrix, first calculate the determinant of the matrix. The discriminant is then equal to the determinant of the matrix squared.

For example, consider the 2x2 matrix:

A = [a b]

[c d]

The determinant of A is equal to (ad - bc). The discriminant of A is then equal to (ad - bc)^2.

The discriminant of a 2x2 matrix is equal to the determinant of the matrix squared. The determinant is calculated by subtracting the product of the two diagonal elements from the product of the two off-diagonal elements.

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The maximum value of f(x,y) on the unit of circle is [tex]\frac{48 \sqrt{21}}{2,401}[/tex].

The full question is in the attachment. From the unit circle

Substitute to f(x,y)

f(x,y) = x³y⁴ = x³ (y²)² = x³ (1 - x²)²

f(x,y) = x³ (1 - 2x² + x⁴)

f(x,y) = x³ - 2x⁵ + x⁷

df/dx = 3x² - (2 × 5)x⁴ + 7x⁶

df/dx = 3x² - 10x⁴ + 7x⁶

df/dx = x² (3 - 10x² + 7x⁴)

To find the maximum or minimum value, the derivated equals zero.

0 = x² (7x⁴ - 10x² + 3)

0 = x² (x - 1) (x + 1) (7x² - 3)

7x² - 3 = 0

Using ABC formula

[tex]x_{1,2} \:=\: \frac{-b \pm \sqrt{b^2 \:-\: 4ac}}{2a}[/tex]

[tex]x_{1,2} \:=\: \frac{-0 \pm \sqrt{0^2 \:-\: (4 \times 7 \times - 3)}}{2 \times 7}[/tex]

[tex]x_{1,2} \:=\: \frac{\pm \sqrt{4 \times 21)}}{14}[/tex]

[tex]x_{1,2} \:=\: \frac{\pm 2 \sqrt{21}}{14}[/tex]

[tex]x_{1,2} \:=\: \frac{\pm \sqrt{21}}{7}[/tex]

The maximum value from x₁.

The minimum value from x₂.

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The value of x when the quadratic expression  t² - 8t + 16 is factorised to (t + a)² is -4.

Quadratic expression is an expression with the variable with the highest power of 2. The quadratic equation in its standard form is ax² + bx + c = 0, where a and b are the coefficients, x is the variable, and c is the constant term.

Therefore, let's factorised the expression t² - 8t + 16 in the form (t + a)². Where a is an integer.

Hence,

t² - 8t + 16

t² - 4t - 4t + 16

t(t - 4) -4(t - 4)

(t - 4)(t - 4)

Hence,

(t + a)² = (t - 4)²

Therefore,

a = -4

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The inverse of 7 modulo 11 is 4, which means that 4 multiplied by 7 gives a number congruent to 1 (mod 11). This means that 4 is the number that when multiplied by 7 gives a remainder of 1 when divided by 11.

In modular arithmetic, the inverse of a number is the number that when multiplied by the original number gives a result that is congruent to 1 (modulus). For example, if we take the modulus of 11 as an example, then the inverse of 7 modulo 11 is 4, since 7*4 = 28 ≡ 1 (mod 11). This means that 4 is the number that when multiplied by 7 gives a remainder of 1 when divided by 11. The inverse of a number modulo a given modulus can be calculated using the Extended Euclidean algorithm. This algorithm allows us to find the inverse of a number modulo a given modulus by solving a series of equations and using the result to calculate the inverse. For example, in the case of 7 mod 11, the Extended Euclidean algorithm gives us the result 4, which is the inverse of 7 mod 11.

11 = 7*1 + 4

7 = 4*1 + 3

4 = 3*1 + 1

3 = 1*3 + 0

By reading the equations from right to left, we can see that the inverse of 7 mod 11 is 4, since 4*7 = 28 ≡ 1 (mod 11).

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The number of terms that the expression 5xy 9yz 3zx 5x 4y has is 5 terms.

What is an algebraic expression?

An algebraic expression is a set of numbers and letters that make up an expression that has a meaning, the letters are variables and the numbers are coefficients or independent terms, algebraic expressions can be part of an equation and model mathematical processes.

How to determine terms?

To determine the number of terms in an algebraic expression, we only have to count the spaces (addition and/or subtraction symbols) and add the unit, in this way we will have the number of terms.

5xy 9yz 3zx 5x 4y has 4 spaces

4 + 1 = 5 terms.

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6) The time required by James if he completes the work alone is 18 hours.

Time and work are concerned with the amount of time it takes a person or a group of people to complete a task and the effectiveness of the work performed by each of them. The fundamental idea behind Time and Work is comparable to the idea behind Proportionality, which is present in all arithmetic disciplines.

"How much work one person can complete in one day is what the term "work efficiency" refers to. For instance, someone can complete a task in two days. In other words, he may complete 50% of the work in a single day. His effectiveness will therefore be 50%.

Given that,

Monica is fencing a yard

Monica took 9 hours to fence the yard.

If she takes James help to fence the yard then she estimates that she can do it in 6 hours.

Now, we have to find how much time James requires if he work alone=?

Then,

(9x)/(9+x)=6

9x=54+6x

3x=54

x=18

So, the time required by James if he completes the work alone is 18 hours.

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In the XY plane, the circles with equations (x-3) + y = 11 and (x+2) + y = r are externally tangent. the value of r is -6.

Generally, To find the value of r, we can start by solving for the centers and radii of the two circles.

The equation of the first circle is of the form (x - h)² + (y - k)² = r², where (h, k) is the center of the circle and r is the radius. We can rewrite the equation of the first circle as (x - 3)² + y² = 11², so the center of the circle is (3, 0) and the radius is 11.

The equation of the second circle is also of the form (x - h)₂ + (y - k)₂ = r². We can rewrite the equation of the second circle as (x + 2)² + y² = r², so the center of the circle is (-2, 0) and the radius is r.

Since the two circles are externally tangent, the distance between their centers is equal to the sum of their radii. Therefore, the distance between the centers is equal to 11 + r. We can use the distance formula to find the distance between the centers:

distance = √((h₂ - h₁)^2 + (k₂ - k₁)²)

Plugging in the coordinates of the centers, we get:

distance = √((-2 - 3)^2 + (0 - 0)^2) = √(5^2 + 0^2) = √(25) = 5

Since the distance between the centers is equal to the sum of the radii, we can set up the equation:

5 = 11 + r

Solving for r, we get:

r = 5 - 11 = -6

Therefore, the value of r is -6.

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