find tan a if necessary write answer as fraction

If the constant of variation is 12 and y = 36 and they vary directly, then x equals 3.

Direct variation is when two quantities, x and y, are related in such a way that the ratio of their values is always the same. This means that y = kx, where k is the constant of variation.

In this case, we are given that k = 12 and y = 36. We can plug these values into the equation to find x:

36 = 12x

To solve for x, we can divide both sides of the equation by 12:

36/12 = 12x/12

This simplifies to:

3 = x

Therefore, x equals 3.

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Answer:

3rd choice down

f(x) = -1/2x + 8

Step-by-step explanation:

find the slope of the line using the 2 given points:

slope = m = (8-14) / (0--12) = -6/12 = -1/2

read the y intercept right off the graph at point (0,8):

b = 8

f(x) = mx + b = -1/2x + 8

Answer:

(x, y) = (-7, -2).

Step-by-step explanation:

To solve the system of equations:

y = 3x + 19

y = 5x + 33

We can use the substitution method, which involves solving one equation for one variable and substituting that expression into the other equation. Then we can solve for the remaining variable.

From the first equation, we can solve for y in terms of x:

y = 3x + 19

From the second equation, we can solve for y in terms of x:

y = 5x + 33

Now we can substitute the expression for y from the first equation into the second equation:

3x + 19 = 5x + 33

Simplifying this equation by subtracting 3x from both sides:

19 = 2x + 33

Subtracting 33 from both sides:

-14 = 2x

Dividing both sides by 2:

x = -7

Now that we have the value of x, we can substitute it back into either equation to find the value of y:

y = 3x + 19

y = 3(-7) + 19

y = -21 + 19

y = -2

The solution to the system of equations is (x, y) = (-7, -2).

The value of c is 8 (option C).

To find the value of c in a linear equation, we can compare the given equation to the standard form of a linear equation, which is y = mx + c.

In this case, the given equation is y = 8. If we compare this to the standard form, we can see that m (the slope) is 0 and c (the y-intercept) is 8.

Therefore, the value of c is 8.

So, the correct answer is C. 8

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The expected value of this scenario is 4.19.

The Expected value (EV), which is based on a random variable's probability distribution, describes the long-term average level of that variable. The expected value of a stock or other investment is a crucial factor in investing and is taken into account while performing scenario analysis.

To calculate the expected value, we need to multiply each outcome xi by its respective probability P(xi), and then add up all of these products. So, we have:

Expected value = 1(0.24) + 2(0.22) + 3(0.31) + 4(0.01) + 5(0.16) + 6(0.29)

Expected value = 0.24 + 0.44 + 0.93 + 0.04 + 0.80 + 1.74

Expected value = 4.19

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Answer:

3(4x + 7) - (8x - 7)

Step-by-step explanation:

Using binomial distribution, the probability of exactly two of their four children having the trait is 0.13 (rounded to the nearest thousandth).

This is a binomial distribution problem with n = 4 trials (number of children) and p = 0.82 probability of success (having the trait) for each trial.

The probability of exactly two children having the trait can be calculated using the binomial distribution formula:

P(X = 2) = (4C2) * 0.82^2 * (1 - 0.82)^(4-2)

where (4C 2) is the number of ways to choose 2 children out of 4.

Using a calculator or statistical software, we get:

P(X = 2) = (4 C 2) * 0.82^2 * (1 - 0.82)^(4-2)

= 6 * 0.82^2 * 0.18^2

= 0.13

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One possible ordered pair that is a solution of the equation y = 22 - 9x is (2, 4).

What is an ordered pair, and how can we find solutions of a linear equation?

An ordered pair is a pair of numbers (x, y) that represents a point on a coordinate plane. In algebra, we often use ordered pairs to represent solutions of equations, where the x-coordinate represents a variable and the y-coordinate represents the corresponding value of the expression.

To find solutions of a linear equation, we can substitute different values of the variable into the equation and solve for the corresponding values of the expression.

Find the ordered pair:

We are given the equation y = 22 - 9x, and we want to find an ordered pair that is a solution of the equation. To do this, we can choose a value of x and then use the equation to find the corresponding value of y.

Let's choose x = 2. Then, we can substitute x = 2 into the equation and solve for y:

y = 22 - 9(2)

y = 22 - 18

y = 4

Therefore, when x = 2, y = 4, which means the ordered pair (2, 4) is a solution of the equation.

We could also check this by graphing the equation and verifying that the point (2, 4) lies on the line represented by the equation.

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Therefore, the equation of the parabola is:

f(x) = -(x - 3)² + 25

f(x) = -x² + 6x + 16

So the answer is f(x) = -x² + 6x + 16.

Typically, the intersection of two or more lines or edges forms a vertex, a singular point on a mathematical object. Graphs, polygons, polyhedra, and angles are the shapes that contain vertices most commonly. Nodes are another name for vertices in a graph.

Since the vertex of the parabola is at (3, 25), we know that the equation of the parabola is of the form:

f(x) = a(x - 3)² + 25

where "a" is a constant that determines the shape of the parabola. We also know that the parabola passes through the points (-2, 0), (8, 0), (0, 16), and (6, 16).

Let's plug in the coordinates of one of the points on the parabola to find the value of "a". For example, if we plug in the coordinates of the point (0, 16), we get:

16 = a(0 - 3)² + 25

-9 = 9a

a = -1

Therefore, the equation of the parabola is:

f(x) = -(x - 3)² + 25

f(x) = -x² + 6x + 16

So the answer is f(x) = -x² + 6x + 16.

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The product or multiple of 3.8 and 11.9 by rounding off (simplification) is equal to 45.22.

Simplification means keeping it simple. In mathematics, it simplifies or simplifies formulas/fractions/problems into simpler forms. Simplify the problem with calculations and solutions. 

Simplification generally means finding answers to complex calculations involving division, multiplication, square roots, cube roots, plus and minus numbers. 

Simplicity complicates deadpan, making it easier to understand and solve. Here are some advantages of solving a problem or equation by simplification.

It helps you solve your problem in fewer steps. Complex problems can be reduced to simpler forms by following the rules of simplification 

According to the question:

3.8×11.9 = (38/10)×(119/10)

             = 4522/100

             = 45.22

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The polynomial that must be added to x^(2)-2x+6 is 2x^(2) + 9x - 6.

To find the product of the two polynomials (2x^(4)y)(3x^(5)y^(8)), we need to use the distributive property and combine like terms.

The distributive property states that a(b+c) = ab+ac. So, we can distribute the first polynomial to each term in the second polynomial:

(2x^(4)y)(3x^(5)y^(8)) = (2x^(4)y)(3x^(5)) + (2x^(4)y)(y^(8))

Next, we can combine like terms by adding the exponents of the variables:

= 6x^(4+5)y^(1+8)

= 6x^(9)y^(9)

So, the product of the two polynomials is 6x^(9)y^(9).

To find the polynomial that must be added to x^(2)-2x+6 so that the sum is 3x^(2)+7x, we can set up an equation:

x^(2)-2x+6 + (a+bx+cx^(2)) = 3x^(2)+7x

Then, we can rearrange the equation to solve for the polynomial:

a+bx+cx^(2) = 3x^(2)+7x - x^(2) + 2x - 6

a+bx+cx^(2) = 2x^(2) + 9x - 6

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Answer:

When you make 3x + y = -8 into a slope intercept equation it will become the same question

3x + y = -8

-3x      |       -3x

y = -3x - 8

Answer:

  32 in

Step-by-step explanation:

You want the missing diameter of the smaller of two similar cylinders, where the larger is 12 ft in diameter and 3 ft high, while the smaller is 8 inches high.

The linear dimensions of similar figures have the same ratio.

The ratio of the diameter to the height of the larger figure is ...

  (12 ft)/(3 ft) = 4

The smaller figure will also have a diameter that is 4 times the height:

  d = 4 × 8 in = 32 in

The missing dimension is 32 inches.

Answer:

x=8.3 recurring

Step-by-step explanation:

1÷0.12=8.3 recurring

x=8.3 recurring

or as a fraction 8 1/3

Answer:

16 + 24

Step-by-step explanation:

The restrictions on x are x = 1/5 and x = 0.

The restrictions on x, when (x+4)/(5x-1) is divided by (3x+12)/(6x), can be found by looking at the denominators of each fraction. The restrictions are values of x that would make the denominator equal to zero, which would make the fraction undefined.

For the first fraction, (x+4)/(5x-1), the restriction is when 5x - 1 = 0. Solving for x, we get:
5x = 1
x = 1/5

For the second fraction, (3x+12)/(6x), the restriction is when 6x = 0. Solving for x, we get:
x = 0

Therefore, the restrictions on x are x = 1/5 and x = 0. These values of x cannot be used in the original expression because they would make the denominator equal to zero and the expression undefined.

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Therefore, it would be necessary to take the measurements in a manner that would guarantee that these requirements are met.

Two or more lines, dotted lines, or planes that remain the same distance apart and never cross, even if they are extended indefinitely in both directions, are referred to as parallel in mathematics. The sign "||" stands for parallel lines. There are many significant characteristics of parallel lines. The fact that a transversal line—a line that crosses two or more parallel lines—always forms equal angles is among the most significant.

given

If two lines are drawn, one from the highest spot on the roof to the surface and the other from the lowest point, they must be parallel to one another. Those lines must also be parallel to one another if we sketch one from the leftmost point on the roof to the surface and another from the rightmost point on the roof to the surface.

Therefore, it would be necessary to take the measurements in a manner that would guarantee that these requirements are met.

To ensure that the measurements are precise and that the roof is built at the right angle to be parallel to the road, this may require using a level or other instruments.

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Answer:

The answer is going to be 4r (2r + 3)

By the Fundamental Homomorphism Theorem, Q is isomorphic to Z2*Z2.

a) Q is the quotient ring R/I, which has four elements: [0]_I, [1]_I, [2]_I, and [3]_I. Here, [x]_I is the equivalence class of x in R/I.

b) Using the Fundamental Homomorphism Theorem, we can show that Q is equivalent to Z2*Z2. Since I is a normal subring of R, the quotient ring Q can be written as Q = R/I. Then the homomorphism defined by φ: R → Z2*Z2, where φ(r) = (r mod 2, r mod 2) is onto and I is the kernel of φ. Thus, by the Fundamental Homomorphism Theorem, Q is isomorphic to Z2*Z2.

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This property can be applied to any number of lines as long as they are all parallel to the same line.

The statement "if n I| m and m ll then 1 || n" is not valid as the symbols used are not correct. The correct statement should be "if l || m and m || n then l || n". This means that if line l is parallel to line m and line m is parallel to line n, then line l is also parallel to line n. This is known as the transitive property of parallel lines.

Similarly, the statement "if k 11,11 m and m In then k \ n" is not valid as the symbols used are not correct. The correct statement should be "if k || l, l || m, and m || n then k || n". This means that if line k is parallel to line l, line l is parallel to line m, and line m is parallel to line n, then line k is also parallel to line n. This is also an application of the transitive property of parallel lines.

In conclusion, the transitive property of parallel lines states that if two lines are parallel to the same line, then they are also parallel to each other. This property can be applied to any number of lines as long as they are all parallel to the same line.

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The Euclidean inner product of the given vectors is 25.

The Euclidean inner product of two vectors u and v is defined as the sum of the products of the corresponding entries of the vectors. In mathematical terms, it is given by:

Euclidean inner product = u[1]*v[1] + u[2]*v[2] + u[3]*v[3]

Given the vectors u=[[5],[3],[-4]] and v=[[1],[0],[-5]], we can find the Euclidean inner product by substituting the values into the formula:

Euclidean inner product = (5)*(1) + (3)*(0) + (-4)*(-5)
= 5 + 0 + 20
= 25

Therefore, the Euclidean inner product of the given vectors is 25.

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The steepest road in the world, Canton Avenue in Pittsburgh, Pennsylvania, has a grade of 37%. This means that for every 100 ft of horizontal distance, the road rises 37 ft. To find out how much the road rises for 21 ft of horizontal distance, we can use the formula:

rise = grade × distance

Plugging in the values we have:

rise = 0.37 × 21

rise = 7.77 ft

Therefore, the road rises 7.77 ft for 21 ft of horizontal distance.

To find the angle that this grade makes with the ground, we can use the formula:

tan θ = rise ÷ distance

Plugging in the values we have:

tan θ = 7.77 ÷ 21

tan θ = 0.37

θ = tan^-1(0.37)

θ = 20.3°

Therefore, the grade of Canton Avenue makes an angle of 20.3° with the ground.

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The value of m and n is 5√2 and 5 respectively.

The hypotenuse side of a right-angled triangle's square is equal to the sum of the squares of its other two sides, according to Pythagoras' Theorem.

A right-angled triangle.

A 45° angle is found in a triangle.

The triangle is therefore a right-angled isosceles triangle.

Hence, n = 5.

To find m:

Apply Pythagoras' theorem,

m = √{n² + 5²}

m = √(25 + 25)

m = √50

m = 5√2

Therefore, m = 5√2.

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Answer:

Step-by-step explanation:

c

Answer:E

Step-by-step explanation:

2x + 3y = 4

-x + 4y = -13 /×2

2x + 3y = 4

-2x + 8y = -26

11y = -22

y = -2

2x + 3(-2) = 4

2x + (-6) = 4

2x = 10

x = 5

check:

2(5) + 3(-2) = 4

10 + (-6) = 4

4 = 4

L = R

-(5) + 4(-2) = -13

-5 + (-8) = -13

-13 = -13

L = R

∴ x = 5, y = -2

The value of k is 1, which is the value of g(x) (and f(x)) when x = -3 or x = 3.

We can determine the type of transformation and the value of k for each of the aforementioned functions using the tables provided for f(x) and g(x).

g(x) = 3f(x) (x)

Here, there occurs a vertical stretch/compression transformation. The function g(x) is a three-fold vertical expansion or contraction of f(x). G(x) has a value of 4, which is identical to the value of k, whether x = -6 or = 6.

g(x) = f(3x) (3x)

Here, there occurs a horizontal stretch/compression transformation. A horizontal stretch or compression of f(x) by a factor of 1/3 results in the function g(x). When x = -3 or x = 3, the value of k is 1, which is also the value of g(x) and f(x).

g(x) = (1/3)f(x) (x)

Here, there occurs a vertical stretch/compression transformation. A vertical stretch or compression of f(x) by a factor of 1/3 results in the function g(x). G(x) has a value of 4, which is identical to the value of k, whether x = -6 or = 6.

g(x) = f(x/3)

Here, there occurs a horizontal stretch/compression transformation. The function g(x) is a three-fold horizontal stretching or compression of f(x). When x = -3 or x = 3, the value of k is 1, which is also the value of g(x) and f(x).

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The formula for an exponential function that passes through the two points are

a. (0,4) and (2,64)

f(x)= 4(4ˣ)

b. (0,810) and (2,10)

g(x)=810(1/9)ˣ

The following is the formula for an exponential function that traverses two points:

f(x) = abˣ

Where a is the initial value and b is the growth rate.

To find the formula for an exponential function that passes through the two points given, we can plug in the values of x and y into the formula and solve for a and b.

For the first set of points, (0,4) and (2,64), we can plug in the values of x and y into the formula and solve for a and b:

4 = ab⁰
64 = ab²

Simplifying the first equation gives us:

a = 4

Substituting this value of a into the second equation gives us:

64 = 4b²

Solving for b gives us:

b = √(64/4) = 4

Therefore, the formula for the exponential function that passes through the two points (0,4) and (2,64) is:

f(x) = 4(4ˣ)

For the second set of points, (0,810) and (2,10), we can plug in the values of x and y into the formula and solve for a and b:

810 = ab⁰
10 = ab²

Simplifying the first equation gives us:

a = 810

Substituting this value of a into the second equation gives us:

10 = 810b²

Solving for b gives us:

b = √(10/810) = 1/9

Therefore, the formula for the exponential function that passes through the two points (0,810) and (2,10) is:

g(x) = 810(1/9)ˣ

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