What is the sum of the 2 solutions of the equation x^2-4x-45=0???

PLEASE HELP!!

Challenge To travel on vacation, a family wants to rent a car. Company A bills $70.50 plus 17 cents each mile. Charges from Company B are $30.50 plus 8 per mile. For every x miles that Company A charges, Company B is (39.24x)

Before figuring out their difference for x miles, we must first determine their difference for one mile.

Difference per mile = ($70.50 + $0.14) - ($30.50 + $0.90)

= $70.64 - $31.40

= $39.24

Difference for x miles = $39.24 × x miles

= $(39.24x)

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Answer:

the value of x is 55/9 ok hope it helps

Limits are the rate of change of a function and also used in many other concepts such as continuity, differentiability and many other concepts in calculus.

In calculus, limits are used to study the behavior of a function as the input, or independent variable, approaches a specific value. The limit of a function at a particular point, say x = a, is defined as the value that the function approaches as the independent variable x gets arbitrarily close to a, but not necessarily equal to it.

The notation for a limit is usually represented as:

lim x->a f(x) = L

Which means as x approaches a, f(x) approaches L.

Properties of limits include:

1) The limit of a constant is equal to the constant.

2) The limit of a sum, difference, or product of functions is equal to the sum, difference, or product of their limits, respectively.

3) The limit of a function at a point is unique, if it exists.

Limits are an essential concept in calculus as they are used to define the derivative, which is the rate of change of a function and also used in many other concepts such as continuity, differentiability and many other concepts in calculus.

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Answer:

$182.90

Step-by-step explanation:

Find the cost per kg. To do so, divide the total cost, with the amount of kg that is bought:

(Total Cost/Total weight) = (cost/unit):

[tex]\frac{106.20}{18} = 5.9\\\\[/tex]

$5.9 per kg of apple.

~

Next, solve for the amount that 31 kg of apples would cost. Multiply the unit cost with the amount of kg of apples purchased:

(Total weight of apples x Cost per kg for apples) = Total cost:

[tex]31 * $5.9 = Total Cost\\Total Cost = 182.9[/tex]

$182.90 is your answer.

~

Answer:

3 slices

Step-by-step explanation:

37.5% = 0.375

We take

8 times 0.375 = 3 slices

So, 3 slices of pie remain after dinner.

The  vertices of the rotation of 180⁰  are P'(2, 2), Q'(-1, 2), R'(-2, 4) and S'(3, 4)

The angle of rotation is a measurement of the amount, of namely angle, that a figure is rotated about a fixed point, often the center of a circle

When we rotate a figure of 180 degrees about the origin either in the clockwise or counterclockwise direction, each point of the given figure has to be changed from (x, y) to (-x, -y) and graph the rotated figure.

Before Rotation                                 After Rotation

(x, y)                                                          (-x, -y)                            

Let P(-2, -2), Q(1, -2), R(2, -4) and S(-3, -4) be the vertices of a four sided closed figure. If this figure is rotated 180° about the origin, find the vertices of the rotated figure and graph.

Here, the given is rotated 180° about the origin. So, the rule that we have to apply here is

(x, y) ----> (-x, -y)

Based on the rule, we have to find the vertices of the rotated figure.

Also, (x, y) ----> (-x, -y)

P(-2, -2) ----> P'(2, 2)

Q(1, -2) ----> Q'(-1, 2)

R(2, -4) ----> R'(-2, 4)

S(-3, -4) ----> S'(3, 4)

There, the vertices of the rotated figure are

P'(2, 2), Q'(-1, 2), R'(-2, 4) and S'(3, 4)

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Complete question:

Let P(-2, -2), Q(1, -2), R(2, -4) and S(-3, -4) be the vertices of a four sided closed figure. If this figure is rotated 180° about the origin, find the vertices of the rotated figure and graph.

The value of S, i.e., prependicular length in right angled triangle is twelve units.

We have, a right angled triangle ABC as see in above figure. From the above figure, we get the following information,

The base length of right angled ∆ ABC, BC = 9 units

The perpendicular length/height of

∆ ABC , AC = S units

The hypotenuse length of ∆ ABC, AB

= 25 units

We have to calculate the value of S i.e., the prependicular length. Using the Pythagoras threoem to solve the value of S,

(hypotenuse)²= (base)² + (prependicular)²

=> AB² = BC² + AC²

=> 15² = 9² + S²

=> 225 = 81 + S²

=> 225 - 81 = S²

=> S² = 144

=> S = ±√144

=> S = ± 12

but S, is represent the length and it's value is always positive. Therefore, the required value of S is 12 units.

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Complete question:

For the above figure, What is the value of S units?.

The easiest way to determine equivalent expressions for algebraic expression is by using the factoring.

Equivalent expression : In Algebra, equivalent expressions are algebraic expressions that, although they look different, turn out to really be the same. And since they are the same, they will produce the same results when same value substitute for their variables. For example, 3(x + 2) and 3x + 6 are equivalent expressions because the value of both expressions remains the same for any value of x. When writing equivalent expressions, we must be sure that each side of the equal number corresponds to the same number. Using the factoring :

2(xy + 2x). As y see that there is

another common factor, x. So, we

get the result as 2x(y + 2).

Thus, the required equivalent expression is determined.

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Answer:

X is 18

Step-by-step explanation:

2/3 = 0.6666666666666667

12 divided by 18 = 0.6666666666666667

Answer:

2^1010 x 5^1011

Step-by-step explanation:

This expression can be simplified by combining the exponents of the similar bases.

2^2010 x 5^2011 / 10^1000 = (2^2010 x 5^2011) / (2^1000 x 5^1000)

= (2^1010 x 5^1011) / 10^1000

The final answer is 2^1010 x 5^1011.

Right angled triangle PQR, whose vertices are located at P(-6, -2) and Q(6,6). It is further given that PQR = 90° . y = 0.666666666667 x + 2 is the equation of the straight line .

y = 0.6666666667x + 2 Points ( -6 , -2 ) , ( 6 , 6 ) ( 6 , 6 ) Formula               (y = mx + b) y = 0.666666666667 x + 2 Slope in metres : 0.66666666667 , 2. Y-intercept 0. 6666666666 x Plus any number of parallel lines 1.5 x + any number for parallel lines.

Any line without curves is said to be straight. Consequently, a straight line is one that is uncurved and stretches beyond infinity on both sides. a diagram of a graph in which each edge is a section of a straight line. Additional terms to consider are grid drawing, orthogonal drawing, planar straight-line graph, and Bresenham's algorithm. A straight line has the equation y=mx+c, where c is the height at which the line crosses the y-axis, also known as the y-intercept, and m is the gradient.

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Answer:

12 - 3z or 3 .9 - 3z

Step-by-step explanation:

1 - if it is just a "9" and not a "0 .9" the answer is "12-3z". You will have to isolate the expressions with the "z" (the 2z and the z). They have a "-" before them, so they are negative expressions (-2z and -z). When the letter is alone, we supose that is a whole, not a decimal, expression, so it is like "1z". After all, you will have two negative expressions, the "-1z" and the "-2z", then you will just add "-1z" and "-2x" (-1z + (-2z) = -1z -2z = -3z

Now, you will need to add "9" and "+3" (9 + (+3) = 9 + 3 = 12).

Now, you have a "-3z" and the "12", and you will add they (-3z + 12 = 12 + (-3z) = 12 - 3z).

2 - But, if it is a "0 .9" ( "0 .9" is the same of " .9" and not a "9" the answer is "3 .9 - 3z". Now it is the same as the number 1 (just do the same from the "You will have" to the "-1z -2z = -3z".

Now, you need to add "0 .9" and "+3" ( .9 + (+3) = .9 + 3 = 3 .9).

So, you have the "-3z" and the "3 .9", and you need to add them ( 3 .9 + (-3z) = 3 .9 - 3z ).

I recommend you to study more of rule of signs, like (-) + (-) = (+) and things like this.

Hope that I could help you

Answer:

PART A : points to graph (7,0)(1,-1)(2,-5)

PART B: (x, y) => (-x+3, y-2)

Explanation step by step :

Reflected across y axis means y-coordinate of every point remains same and x-cordinate become opposite

(x, y) become (-x, y)

Here,

(-4, 2) become (4, 2)

(2, 1) become (-2, 1)

(1,-3) become (-1,-3)

Similarly a point P(x, y) translated by vector <3, -2> means the point P become P'(x+3, y-2)

(4, 2) become (7,0)

(-2, 1) become (1, -1)

(-1,-3) become (2,-5)

So the composition of function for the given sequance of transfermation is (x, y) = (-x+3, y-2)

Note : graph not accurate, just for explanation.

The length of TS  in ΔTRS using Similarity of triange is 12 cm .

If two items have the same shape or have the same shape as their mirror images, they are said to be Similar. One can be produced from the other more accurately by evenly scaling it, perhaps with the addition of further translation, rotation, and reflection.

If the sides are in the same ratio or proportion and the angles are equal (corresponding angles), two triangles will be comparable (corresponding sides). Similar triangles may have varying individual side lengths, but they must have equal angles and the same scale factor or matching ratio of the side lengths. If two triangles resemble one another, then

In ΔTPQ and ΔTPS

∠T is common in both triangle

PQ ║ RS

∴∠TPQ = ∠TRS (Corresponding Angles)

similarly ,

∠TQP = ∠TSR

∴ Δ TPQ ~ ΔTRS

So,

PQ/ RS = TQ/ TS

⇒ 2/ 6 = 4 / TS

⇒TS = (4*6)/2  = 12

The length of TS  in ΔTRS using Similarity of triange is 12 cm .

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The zeros of polynomial function f(x) = x³ - 2x² - 24x are x = 0, x = -4 and x = 6

Consider given function  f(x) = x³ - 2x² - 24x

We know that the zeros of a function are nothing but the values of the variable of the function that makes the function value equal to 0.

To find the zeros of function f(x), we need to equate f(x) to zero then solve it for x.

⇒ f(x) = 0

⇒  x³ - 2x² - 24x = 0

⇒  x (x² - 2x - 24) = 0

⇒ x = 0   OR   x² - 2x - 24 = 0

Now we solve quadratic equation x² - 2x - 24 = 0

x² - 2x - 24 = 0

x² - 6x + 4x - 24 = 0

(x - 6)(x + 4) = 0

x = 6      OR  x = -4

Thus x = 0, x = -4 and x = 6 are zeros of given polynomial function.

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The complete question is:

What are the zeros of the polynomial function f(x) = x³ - 2x² - 24x?.

The derivative of log 2x is 1/x. This is obtained by applying the formula of derivative of log x.

Let y is the given function = log 2x.

Differentiating with respect to x on both sides, we have,

d/dx(y) = d/dx(log 2x)

dy/dx = 1/2x × d/dx(2x)

dy/dx = 1/2x × 2

dy/dx = 1/x

Chain rule is applied in the above solution.

Its formula is given as, d/dx [f(g(x)] = d/dx [f(g(x)] × d/dx[g(x)]

where, f(x) and g(x) are a function of function.

In the above solution, f(x) is log x and g(x) is 2x.

Thus, the derivative of log 2x is 1/x.

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When solving systems of equation with three variables we use the elimination method or the substitution method to make a system of two equations in two variables.

There are several methods to solve a system of equations with three variables, including substitution, elimination, and graphing. One common method is to use elimination, also known as the addition/subtraction method. This involves adding or subtracting equations in order to eliminate one of the variables and creating an equation with only two variables. Once you have a system of two equations with two variables, you can solve for one of the variables, substitute that value back into one of the original equations, and then solve for the remaining variable. After that you can use the value of the variables to find the values of the other variables.

Hence, When solving systems of equation with three variables we use the elimination method or the substitution method to make a system of two equations in two variables.

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Total thirty-nine months will be take by Johnson family to pay off the balance, $10,000.00.

The monthly payment is the amount paid per month to pay off the principle in the time period of the loan. If your rate is r%, divide r/100 by 12 to calculate your monthly interest rate. Formula for monthly payment is, M = Pr(1+r)ⁿ/{(1+r)ⁿ - 1 }

where, P --> principle

r--> rate of interest in months

n --> number of periods (in months )

In this problem, Johnson family bought the furniture and appliances for a new house that is principle, P = $10,000

Rate of interest, R = 15%

In terms of months, R = 0.15/12

= 0.0125 per month

Monthly payment, M = $325.00

Plugging all known values in above formula we get, $325.00 = {$10,000 × 0.0125(1 + 0.0125)ⁿ}/{(1+ 0.0124)ⁿ - 1 }

=> 325 = 125(1.0125)ⁿ/{(1.0125)ⁿ - 1}

=> 325 {(1.0125)ⁿ - 1} = 125(1.0125)ⁿ

=> 325(1.0125)ⁿ - 325 = 125(1.0125)ⁿ

=> 325(1.0125)ⁿ - 125(1.0125)ⁿ = 325

=> 200 (1.0125)ⁿ = 325

=> (1.0125)ⁿ = 325/200 = 13/8 = 1.6250

Taking natural logarithm both sides

=> ln(1.0125)ⁿ = ln (1.6250)

=> n ln(1.0125) = ln (1.6250) = 0.4855

=> n×0.0124 = 0.4855

=> n = 0.4855/0.0124 = 39.153 ~ 39

Hence, required months are 39.

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The limit is normally defined as

[tex]lim _{x- > c} f(x) = L[/tex]

It is read as “the limit of f of x, as x approaches c equals L”.

In mathematics, limits are the points at which a function approaches the output for the specified input values. Calculus and mathematical analysis depend heavily on limits, which are required to determine integrals, derivatives, and continuity. It is applied during the analysis process and always focuses on the function's behaviour at a certain time. The idea of the limit of a topological net broadens the definition of the limit of a sequence and relates it to the limit and direct limit in the theory category. In general, there are two sorts of integrals: definite integrals and indefinite integrals. The upper limit and lower limit for definite integrals are correctly defined.

Limits in maths are unique real numbers. Let us consider a real-valued function “f” and the real number “c”, the limit is normally defined as

[tex]lim _{x- > c} f(x) = L[/tex]

It is read as “the limit of f of x, as x approaches c equals L”. The “lim” shows the limit, and fact that function f(x) approaches the limit L as x approaches c is described by the right arrow.

A function may get close to two distinct limits. There are two scenarios: one in which the variable approaches its limit by values larger than the limit, and the other by values smaller than the limit. The right and left-hand limits still exist even though the limit is not specified in this situation.

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Longitude and latitude are geographic coordinates that indicate a location on the Earth's surface. They are used to locate a specific point on a map or globe.

Longitude is the measure of a location's east-west position on the Earth's surface. It is measured in degrees east or west of the Prime Meridian, which is an imaginary line that runs from the North Pole to the South Pole through the Royal Observatory in Greenwich, England. Longitude values range from -180 degrees (West) to 180 degrees (East).

Latitude, on the other hand, is the measure of a location's north-south position on the Earth's surface. It is measured in degrees north or south of the Equator, which is an imaginary line that runs around the Earth's middle, dividing it into the Northern and Southern Hemispheres. Latitude values range from -90 degrees (South) to 90 degrees (North).

The diagram below illustrates how longitude and latitude work together to pinpoint a location on the Earth's surface. The intersection of the red line (longitude) and the blue line (latitude) represents the specific location.

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Answer:

12

Step-by-step explanation:

3x+5+49=90

3x+54=90

3x=90-54

3x=36

3x/36/3

x=12

A polynomial of degree 2 is called a quadratic equation. It is a type of equation that can be solved by using the quadratic formula, which looks like this:

where x is the unknown variable and y is the solution to the equation. The quadratic equation can be written in several different ways, but all of them involve solving for y using equations similar to the one above.

Polynomials of degree 2 are common in everyday life, and are used to solve problems such as solving for the slope or height of a line, determining the points at which two lines intersect, or finding the distance between two points.

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The algebraic expression for the a number that has been multiplied by three is: x + 3*x. In this statement, x stands for the number, while 3*x, or 3x, stands for the number times three.

An algebraic expression is a combination of numbers, variables, and mathematical operations, such as addition, subtraction, multiplication, and division. Algebraic expressions can be evaluated for specific values of the variables in order to find a numerical result.

A mathematical statement with variables, constants, coefficients, or algebraic operations is known as an algebraic expression. A good example of an algebraic expression is 5x2+6xyc. Algebraic expression do not utilize equal signs, in contrast to algebraic equations.

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The total entry code can create by the dataset given is 17576000.

Assume the entry character that is n. As per requirement given are the first three entry are 3 letter then then n1 = 26 , n2 = 26, n3 = 26. Then, the three after that is a single digit number, so n4 = 10, n5 = 10, n6 = 10. Since we have find the value of each entry character then we can determine total entry code as follow:

Total entry code = n1 x n2 x n3 x n4 x n5 x n6

Total entry code = 26 x 26 x 26 x 10 x 10 x 10 = 26³ x 10³

Total entry code = 17576 x 1000

Total entry code = 17576000

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The expression would be "4 + (7 - m)" .

This expression takes the value of m, subtracts it from 7, and then adds the result to 4.

The equation for the altitude AR of triangle ABC will be 4y-3x=0 i.e. B.

What is a triangle?

Triangles are polygons in geometry that have three sides and three vertices. This figure is two-dimensional and has three straight sides. A triangle is a three-sided polygon. A triangle's three angles added together equals 180°. A single plane contains the triangle. The triangle is classified into six forms based on its sides and angles.

A triangle is categorized into three categories based on its sides, namely:

Scalene Triangle - Each side has a distinct length.

Isosceles Triangle - A triangle with two sides of equal length and one side of a different length.

Equilateral Triangle - A triangle has three sides that are of the same length.

A triangle is categorized into three categories based on its angles, namely:

Acute Angle Triangle - A triangle with all of its angles smaller than 90°.

Obtuse Angle Triangle - A triangle with one of its angles larger than 90°.

Triangle with a Right Angle - A triangle with one of its angles equal to 90°.

Now,

The general form of the linear line is:

y = mx + c where m is the slope and c is the y-intercept

Step 1: getting the slope:

Since AR is the altitude of ABC, therefore, AR is perpendicular on BC which means that slope of AR = -1/slope of BC

Therefore, we will need to get slope of BC:

We have point B = (0,4) and point C = (3,0)

slope of BC = (y2-y1) / (x2-x1) = (0-4) / (3-0) = -4/3

This means that:

slope of AR = m = 3/4

Step 2: getting the y-intercept:

Since point A belongs to the altitude, therefore, point A satisfies the equation of the line. So, to get the y-intercept, we will use point A to substitute in the equation of the line and solve for c as follows:

y = mx + c

y = (3/4) x + c

0 = (3/4)(0) + c

c = 0

Hence,

           y = (3/4) x

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Answer:

y = -8[tex]x^{2}[/tex] + 32x + 40

Step-by-step explanation:

y= -8(x-5)(x+1)

y = (-8x + 40) (x + 1)

y = -8[tex]x^{2}[/tex] -8x + 40x + 40

y = -8[tex]x^{2}[/tex] + 32x + 40