Barbara ran
after lunch.
3
of a mile before lunch and of a mile
8
12
How far did she run in all?

A logarithm is an operation used to determine the exponent of a given base number.

What is logarithm?

A logarithm is a mathematical function that describes the relationship between the power to which a number (called the base) must be raised, and the resulting value. The logarithm of a number is the power to which the base must be raised to produce that number.

Start by moving the logarithm to the left-hand side of the equation: log(x²-15) = log(2x)

Next, use the property of logarithms that log(a/b) = log(a) - log(b) to get x²-15 = 2x

then you can simplify the equation by subtracting 2x from both sides x²-2x-15=0

then factor the equation to get (x - 5)(x + 3) = 0

Finally, use the Zero Product Property to solve for x. The solutions will be x = 5 or x = -3

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The angular speed of 14 revolutions per second is equal to 87.96 radians per second.

Angular speed is a measure of how fast an object is rotating or revolving around an axis. It is typically measured in units of angular displacement per unit of time, such as degrees per second, revolutions per minute (RPM), or radians per second.

To convert angular speed from revolutions per second (RPS) to radians per second (RAD/s), we can use the following formula:

Angular speed (RAD/s) = 2π x Revolutions per second (RPS)

Given that the angular speed is 14 revolutions per second, we can substitute this value into the formula:

Angular speed (RAD/s) = 2π x 14 RPS

Angular speed (RAD/s) = 87.96 RAD/s

So, 14 revolutions per second is equivalent to 87.96 radians per second.

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IfIf Ryan claims that the cost of Plan A and Plan B differ a lot. The statement that best explains why Ryan was misled by the graph is: b.) The scale of intervals on the horizontal axis of both graphs is inconsistent.

Based on the graph we can see that the graph is inconsistent based on the fact that the scale of intervals on the horizontal axis of Plan A  graph and Plan B graph are inconsistent.

The reasons why the both graphs are inconsistent was  because the lines did not intersect or are not on the same line which means that they are parallel lines.

Therefore the correct option is B.

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Answer:

Step-by-step explanation:

The two graphs use different vertical scales.

The elements of the set A'(B∩C)is  { r, t , v, x, y, z}

It is important to note that the universal set is the set containing all the elements for a given event.

From the information given, we have that;

The signs used to represent sets are;

To determine the set,

A'(B∩C)

A' = { r, t, v, x, z}

B∩C = { y, z}

Now, the set A'(B∩C)

A'(B∩C) = { r, t , v, x, y, z}

Hence, the set is { r, t , v, x, y, z}

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Yes, the piecewise functions that coincide with the given function are [(x + 3)-1, when x is greater than or equal to 3, [(x-3)/2] -1, when x is less than 3, [(x+3)/2] -1, when x is greater than -3, and -(x+3)/2] -1, when x is greater than or equal to -3.

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The height of the pole used in the question is; 12.15 ft

The 3 main trigonometric ratios are;

sin x = opposite/hypotenuse

cos x = adjacent/hypotenuse

tan x = opposite/adjacent

Now, since the guy wire makes an angle of 13 degrees with the ground, it means the guy wire will be the hypotenuse of the right angle triangle and the height of the pole which we will label as h will be the opposite side of the triangle. Thus;

height/54 = sin 13

height = 54 * sin 13

height = 54 * 0.225

Height = 12.15 ft

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{G} is the function of {t} and vice - versa is also true.

Given is a graph as shown in the image.

{ 1 } -

Yes, the given function G{t} is the function of {t}. It is a piecewise function.

{2} -

Let the given function is -

y = G{t}

We can find the inverse as -

t = G⁻¹{y}

Yes, {t] is also the function of {G}.

Therefore, it can be concluded that {G} is the function of {t} and vice - versa is also true.

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The value of side BD of the kite is 12 units

In mathematics, kite is a quadrilateral which has two pairs of congruent adjacent sides.

A kite is a geometric shape which is symmetrical. It has two pairs of congruent adjacent sides, and two pairs of congruent opposite angles. The diagonals of a kite are perpendicular bisectors of each other.

Using Pythagoras theorem:

BC² = CE² + BE²

BE = √(BC² - CE²)

BE = √(10² - 8²) = 6 units

Since ΔCDE is identical to ΔBCE.

Thus, DE = BE

DE = 6 units

Since BD = BE + DE

Thus, BD = 6 + 6 = 12 units

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The values of IJ and JK in parallelogram HIJK are 52 and 80 respectively

Recall that in every parallelogram, the opposite sides are equal and parallel.

This implies that IJ ║ HK and HI ║ JK

⇒ 5s - 88 = 3s - 32

Collecting the like terms we have

5s-3s = -32 +88

2s = 56

This implies that s = 28

By substitution we have s as 3(28) -32

= 84-32 = 52 and and 4(28)-32 = 80

The sides of the parallelogram are 80 and 52 respectively

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The ratio may be written if it is a component of a percentage.

6 is to 5 is 12 is to 10 .

Ratios can be expressed as a notation, like 1/2, or as a ratio, like 6:5. A ratio's value is determined by dividing the first and second numbers. Consider the ratio 12:10 as an example. "6 to 5" should be read as the ratio. Any fraction, like 6/5, can also be expressed as a ratio, which is written as 6:5.

A colon or a fraction bar are two typical symbols representing ratios. You can also use words.

6 : 5 = 6/5 = 6 to 5

The ratio may be written if it is a component of a percentage.

6 is to 5

as in ...

12 is to 10 what 6 is to 5, and vice versa.

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=======================================================

Explanation:

Every triangle has the rule where the inside angles add to 180.

(angle1)+(angle2)+(angle3) = 180

x + (x-4) + (x+16) = 180

3x+12 = 180

3x = 180-12

3x = 168

x = 168/3

x = 56

Then we can determine each angle.

As a check:

angle1+angle2+angle3 = 56+52+72 = 180

This confirms the answer is correct.

Side AC of the similar triangle system has a length of 6 units. (Correct choice: C)

Two triangles are similar when both have congruent angles but sides are not congruent though proportional. In this problem we find the case of two similar right triangles, whose relationship is shown below:

AD / AC = CD / BC = AC / AB

If we know that AD = 4 and AB = 9, then the length of side AC is:

4 / AC = AC / 9

AC ² = 36

AC = 6

The length of side AC is equal to 6 units.

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Answer:

20 sides

Step-by-step explanation:

The number of sides of a regular polygon, if each of its interior angles is 162° is 20.

Answer:

Step-by-step explanation:

The resulting vector has the same dimensions as the original, 1 x 3.

A rectangular array of numbers, symbols, or expressions set up in rows and columns is known as a matrix. They are employed in a wide variety of mathematical disciplines and contexts, including calculus, statistics, physics, and engineering, as well as linear algebra. Matrices are an essential tool for solving systems of linear equations and representing linear transformations since they may be added, subtracted from, and multiplied by other matrices.

The matrix multiplication of [2 1 0] and [1 -1 2 -1 -2 1 0 1 1] is:

[2 1 0] x [1 -1 2 -1 -2 1 0 1 1] = [2(1) + 1(-1) + 0(2), 2(-1) + 1(-2) + 0(1), 2(0) + 1(1) + 0(1)]

= [2 -3 1]

Therefore, the product of the two matrices is a row vector [2 -3 1], which has the dimensions 1 x 3.

If we subtract 1 from each element of this row vector, we get:

[2 -3 1] - 1 = [1 -4 0]

So, the resulting vector has the same dimensions as the original, 1 x 3.

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Answer:

x=6

Step-by-step explanation:

hope this helps you with your question

The parabola has a vertex at (7 , -1) has a p-value of -0.5 and it opens downwards.

The axis of symmetry of a parabola is basically perpendicular to the directrix and contains the focus and vertex.  

Thus, the axis of symmetry is the vertical line x = 7.  

The vertex lies halfway between the focus and directrix.  Thus, we can say that the vertex is (7, (6 - 8)/2) = (7, -1)

Due to the fact that the vertex lies above the focus and the directrix is horizontal, then it means that the parabola opens downward.  

Therefore, the focus is (7 - 8)/2 = -0.5 units below the vertex, so, p = -0.5

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Answer:
Maria is able to spend less than $12.
C < 12

Step-by-step explanation:

If Maria has already spent 17 dollars, that means she has 12 dollars left. C cannot be greater than 12. It has to be less.

So think of this C < $12
So if we do the total on one side and the $17 and C on the other side of inequality we get
C + 17 < 29

It cannot be equal to 29 so that's why we don't use a less than or equal to symbol.

Simplify this to get C < 12

I hope this is able to help you :D

Since the Fourier transform of a real value signal is the product of the even cosine transform and the odd sine transform, it is conjugate symmetric and consequently symmetric about the frequency 0.

A real-valued signal's Fourier transform is a conjugate symmetric function, which means it is symmetric about frequency 0. This is demonstrated by the fact that a real-valued signal's Fourier transform may be expressed as the product of its cosine and sine transforms:

F(w) = Fc(w) plus Fs (w)

Where the cosine and sine transforms, respectively, are denoted by Fc(w) and Fs(w). Both the sine and cosine transforms are symmetric about the frequency zero because the sine transform is an odd function and the cosine is an even function. As a result, a real-valued signal's Fourier transform also exhibits symmetry near frequency 0.

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The complete question is

g suppose that w(t) is a real-valued signal. prove that its fourier transform magnitude is symmetric around frequency 0.

We can use the integral  x=4secθ  for each of the indefinite integrals below.

In the given question we can use either 4tanθ,4sinθ or 4secθ to substitute and simplify the given indefinite integrals,

the 1st integral is,

∫ √(x²-16) dx

we can use the trigonometric substitution x=4secθ in this integral, due to which after simplification it will become as,

∫16 secθtan²θ dθ

which then can easily be solved.

the 2nd integral is,

∫ x²/√(x²-16) dx

we can use the trigonometric substitution x=4sinθ in this integral, due to which after simplification it will become as,

∫16 sin²θ dθ

which then can be solved by using a reduction formula.

the 3rd integral is,

∫ dx /(16+x²)³

we can use the trigonometric substitution x=4tanθ in this integral, due to which after simplification it will become as,

∫(1/16⁴) cos⁴θ dθ

the 4th integral is,

∫ (x²-16)^(5/2)dx

we can use the trigonometric substitution x=4secθ in this integral, due to which after simplification it will become as,

∫4096 secθtan⁶θ dθ

the 5th integral is,

∫  dx /(16-x²)^(3/2)

we can use the trigonometric substitution x=4sinθ in this integral, due to which after simplification it will become as,

∫(1/16² cos²θ) dθ

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The expression to determine the distance between the lowest and the highest point is -

{x} = 14505 + |- 282|

Given is that the highest elevation in California is 14,505 feet, and the lowest elevation is − 282 feet.

The expression to determine the distance between the lowest and the highest point can be written as -

{x} = 14505 + |- 282|

where -

|  |  represents modulus function.

Therefore, the expression to determine the distance between the lowest and the highest point is -

{x} = 14505 + |- 282|

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The sum of the differences between sample observations and the sample mean is zero.

Statistics is a science that deals with methods of collecting data, processing data, presenting data, analyzing data, drawing conclusions, and making reasonable decisions based on existing facts.

There are some terms that are frequently used in statistics:

The sum of the differences between sample observations and the sample mean can be denoted as ∑(xi - mean), where n is the size of the sample and i = 1,2,3,...,n

∑(xi - mean) = ∑xi - n*mean,

                    = n*mean - n*mean

                    = 0

Thus the sum of the differences between sample observations and the sample mean is zero.

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By the method of logical reasoning and the seating positions of seven people it is obtained that F sits third to the left of C.

What is logical reasoning?

The technique of applying systematic, logical steps based on mathematical logic to solve a problem is known as logical reasoning. Based on the information provided and mathematical principles, inferences can be drawn.

This seating positing problem can be solved by logical reasoning.

There are seven people - A, B, C, D, E, F, G.

Firstly, A sits third from one of the extreme ends.

Then two people sit between A and B.

The positions can be -

__ __ A __ __ B __ or __ B __ __ A __ __

Now, F sits fourth to the left of B.

So, second seating position gets eliminated.

Also, C sits at the immediate left of B.

__ F A __ C B __

Now, G sits third to the right of E.

E does not sit at any of the extreme ends.

D F A E C B G

So, the seating arrangement is obtained.

Therefore, F sits third to the left of C.

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Seven people named A, B, C, D, E, F, and G are sitting in a row facing north but not necessarily in the same order. A sits third from one of the extreme ends. Two people sit between A and B. C sits at the immediate left of B. F sits fourth to the left of B. G sits third to the right of E. E does not sit any of the extreme ends.

What is the position of F with respect to C?

The values of m and b on the linear equation:

2 + 3x + 5 - 2x = y

are

m = 1

b = 7

A general linear equation can be written as in the slope-intercept form as:

y = m*x + b

Where m is the slope and b is the y-intercept.

Here we have the linear equation

2 + 3x + 5 - 2x = y

Now we want to write this in the slope-intercept form, to do so, we just need to simplify the left side, then we will get:

2 + 3x + 5 - 2x = y

(2 + 5) + (3x - 2x)  =y

7 + x = y

Then the linear equation is:

y = 1*x + 7

So the values are:

a = 1

b = 7

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Answer:

4 hrs

Step-by-step explanation:

let x = # of hours he rented the unicycle

$15 + ($2/hr)x = $23

($2/hr)x = $23 - $15 = $8

x = ($8) / ($2/hr) = 4 hours

The required word problem of expression  2(5+w)=42, can be given as twice the sum of a number, and 5 is 42,

The equation model is defined as the model of the given situation in the form of an equation using variables and constants.

Here,
The question seems to be incomplete, from sources complete expression is given as 2(5+w)=42,

So word problem of expression 2(5+w)=42 can be given as,
Twice the sum of a number and 5 is 42, when we sum a number with 5 and doubled that number gives 42 as a product.

Thus, the required word problem of expression  2(5+w)=42, can be given as twice the sum of a number, and 5 is 42,

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