Distribute Solve for the variables 2(y+6)=8

Answer: Let's call the speed of the airplane in still air "x".

Since the airplane takes 7 hours to fly 2800 kilometers against the wind, its speed against the wind is 2800/7 = 400 km/hr.

Since the return trip with the wind takes only 4 hours, the speed of the wind must be 400 - x.

The total speed of the airplane on the return trip is x + (400 - x) = 400 km/hr.

So, we have:

400 = x + (400 - x)

Expanding the right side:

400 = 400

Therefore, x = 400 km/hr, which is the speed of the airplane in still air.

Step-by-step explanation:

Answer:

Step-by-step explanation:

f

The distance between the points in simplest radical form is equal to 2√10 units.

Mathematically, the distance between two (2) points that are on a coordinate plane can be calculated by using this formula:

Distance = √[(x₂ - x₁)² + (y₂ - y₁)²]

Where:

x and y represents the data points (coordinates) on a cartesian coordinate.

Substituting the given parameters into the distance formula, we have the following;

Distance = √[(x₂ - x₁)² + (y₂ - y₁)²]

Distance = √[(4 - (-2))² + (5 - 3)²]

Distance = √[6² + 2²]

Distance = √[36 + 4]

Distance = √40

Distance = 2√10 units.

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Is this a right triangle: C. Yes, because 6² + 8² = 10².

In Euclidean geometry, the Triangle Inequality Theorem states that the sum of any two sides of a triangle must be greater than or equal (≥) to the third side of the triangle.

Mathematically, the Triangle Inequality Theorem is represented by this mathematical expression:

b - c < n < b + c

Where:

n, b, and c represent the side lengths of this triangle.

By applying Pythagorean theorem, the possible side lengths of the triangle's third side is given by:

10² = 6² + 8²

100 = 36 + 64

100 = 100 (True).

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(a) The function in standard form is f(x) = -2x² + 4x + 5.

(b) The height of the ball when it is thrown is 5 feet.

(c) The horizontal distance from the point where the ball is thrown to the highest point that the ball reaches is 1 foot.

To write the function in standard form, we need to expand the square and simplify the expression:

f(x) = -2(x - 1)² + 7

f(x) = -2(x² - 2x + 1) + 7

f(x) = -2x² + 4x - 2 + 7

f(x) = -2x² + 4x + 5

B. The height of the ball when it is thrown is the y-intercept of the function, which occurs when x = 0. So we can find the height by plugging x = 0 into the function:

f(0) = -2(0)² + 4(0) + 5

f(0) = 5

C. The highest point that the ball reaches is the vertex of the parabola, which occurs at x = 1 (from the given vertex form). To find the height of this point, we can plug x = 1 into the vertex form of the function:

f(1) = -2(1 - 1)² + 7

f(1) = -2(0) + 7

f(1) = 7

Therefore, the highest point that the ball reaches is 7 feet above the ground. The horizontal distance from the point where the ball is thrown to this point is the distance between the point (0,5) and the vertex (1,7), which is 1 unit.

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The value of x is 9.4 in the equation 8x−14+2x+10=90.

Two or more expressions with an Equal sign is called as Equation.

The given equation is 8x−14+2x+10=90

Eight times of x minus forteen plus two times of x plus ten equal to ninety.

In the given equation x is the variable

Plus and minus are the operators.

Add the like terms

Ten times of x minus four equal to ninety

10x-4=90

Add 4 on both sides to cancel four on the left hand side.

10x-4+4=90+4

10x=94

Divide both sides by 10

x=94/10

Divide numerator and denominator by 10.

x=9.4

Hence, the value of x is 9.4 in the equation 8x−14+2x+10=90.

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The complete question

Solve the equation 8x−14+2x+10=90

The temperature 350°F is equivalent to 176.667°C. This is because the temperature in Fahrenheit can be converted to Celsius using the formula, °C = (°F - 32) / 1.8. Using this formula, 350°F - 32 = 318 and 318/1.8 = 176.667°C.

The relationship between Fahrenheit and Celsius scales is a linear one, meaning that for every degree increase in Fahrenheit, there is a corresponding increase of 1.8 degrees in Celsius. This means that if the temperature increases from 350°F to 351°F, then the corresponding temperature in Celsius would increase from 176.667°C to 178.472°C. The same formula can be used to convert Celsius to Fahrenheit, with the formula °F = (°C x 1.8) + 32. In this case, 176.667°C x 1.8 = 319.2 and 319.2 + 32 = 351.2°F, which is a close approximation of the original temperature of 350°F..

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Answer:

483

Step-by-step explanation:

Answer:483

Step-by-step explanation:

69*7=483

$189.13

That's the correct answer On Ax

Answer:

  $189.13

Step-by-step explanation:

You want to know the interest saved if interest at 30.8% compounded monthly on a balance of $1400 is waived for 5 months.

The balance with interest compounded would be ...

  A = P(1 +r/12)^n

where P is the principal earning interest at annual rate r for n months.

The amount of interest earned in that time is ...

  I = P((1 +r/12)^n -1) = $1400(1 +0.308/12)^5 -1) ≈ $189.13

Hugo will save $189.13 in interest charges for the first 5 months.

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Answer:

The Domain : {(−∞,∞), {x/x∈R} and Range : {(−∞,∞), {y/y∈R} of the function  f(x)=2x-5

What is a function?

A relation is a function if it has only One y-value for each x-value.

We have to find the domain and range of f(x)=2x-5

The domain of the expression is all real numbers except where the expression is undefined.

In this case, there is no real number that makes the expression undefined.

Interval Notation:(−∞,∞)

The range is the set of all valid y values.

Domain : {(−∞,∞), {x/x∈R}

Range : {(−∞,∞), {y/y∈R}

Hence, the Domain : {(−∞,∞), {x/x∈R} and Range : {(−∞,∞), {y/y∈R} of the function  f(x)=2x-5

Have a wonderful day! :-)

Answer:

Below

Step-by-step explanation:

y = mx = b    is slope intercept form  

m= slope   b = y-axis intercept   ..... sub in the values given

-2 = (-1)(5) + b      shows b = 4

y = -x + 3    

A research question is an inquiry that a study or research project aims to resolve. Quantitative and Qualitative research questions are the components of questions.

Descriptive research questions are used to determine how the population of the study will react to one or more variables or to describe the factors that the study will evaluate. These questions typically begin with "what."

Comparative research questions aim to identify differences between two or more groups for an outcome variable. These inquiries could possibly be the cause. A comparison between two groups, one in which a certain variable is present and the other in which it is not, may be made, for instance.

Relationship research themes aim to find patterns and interactions between two or more variables. The phrases "association" and "trends," as well as dependent and independent variables, are commonly used in these enquiries.

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Answer:

There is exactly one solution: (3, 1)

Step-by-step explanation:

To graph these equations, you need to change them to slope intercept form:

x + y = 4 in slope intercept form is y = -x + 4 (subtract x frok both sides).

x - y = 2 in slope intercept form is y = x - 2 (subtract x from both sides then divide both sides by -1)*.

Now, all you have to do is graph both and find the point they cross at (the solution) which is (3, 1).

* = y can never be negative, which is why you divide by a -1 after subtracting x.

Hope this helps!

The measure of the angle is 60 degrees. Option B

It is important to value of the angle, we have to take note of the following;

From the information given, we have that;

The angles 80,690 and x are on a straight line, that is, the sum of the angles is 180

This is represented as;

60 + 80 + x = 180

collect like terms

x = 180 - 140

substract the like terms

x = 60 degrees

Hence, the value is 60 degrees

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The number of houses is there in the village will be 25.

An answer to a formula is any variable value that fulfills the equal outcomes, that is, it tends to make the Left Hand Side (LHS) and Right Hand Side (RHS) of the formula equal. To solve an equation, you must locate the feasible solution) to that formula.

In a village, the number of houses and the number of flats is in the ratio 7:4 the number of flats and the number of bungalows is in the ratio 8: There are 50 bungalows in the village.

Let 'x', 'y', and 'z' be the number of houses, flats, and bungalows, respectively. Then the equations are given as,

x / y = 7 / 4

y = (4/7)x                           ...1

y / z = 8 / 6

z = 6y / 8

z = 3x / 7                            ...2

x + y + z = 50                   ...3

From equations 1, 2, and 3, then we have

x + (4/7)x + (3/7)x = 50

7x + 4x + 3x = 350

14x = 350

x = 25

The number of houses is there in the village will be 25.

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Answer: 737 miles

Step-by-step explanation:  335/5=x/11.

Cross Multiply and divide to get x=737

60 s²t² is the lowest common multiple of 3st, 4s^2, 5t^2

LCM is known as the lowest common multiple. This is the smallest number that is a multiple of both of two numbers is called the least common multiple.

Given the terms 3st, 4s^2, 5t^2

Find the factors

3st = 3 * s * t

4s² = 4 * s * s

5t² = 5 * t * t

The LCM is calculated as thus:

LCM = (3*4*5) * s²t²

LCM = 60 s²t²

Hence the LCM of the terms 3st, 4s^2, 5t^2 is 60 s²t²

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Answer:

8 books

Step-by-step explanation:

On a box plot, there is a line in the middle that says where the median is. In this situation, the median is 8.

There were 65 more adults than students who bought tickets to the concert.

Word problems are sentences describing a 'real-life' situation where a problem needs to be solved by way of a mathematical calculation.

Let the number of discounted student tickets sold be x.

Then the number of adult tickets sold is 10 more than twice x, which is 2x+10.

The total number of tickets sold is the sum of the student and adult tickets, which is x + (2x+10) = 3x+10.

We know that the total number of tickets sold is 175, so:

3x+10 = 175

Subtracting 10 from both sides gives:

3x = 165

Dividing by 3 gives:

x = 55

Thus, the number of discounted student tickets sold is 55, and the number of adult tickets sold is:

2x+10 = 2(55) + 10 = 120.

The number of adults who bought tickets is 120, and the number of students who bought tickets is 55.

difference = 120 - 55 = 65

Therefore, there were 65 more adults than students who bought tickets to the concert.

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Answer:

Step-by-step explanation:

1200

Answer:

$960

Step-by-step explanation:

September = 1000

20% * 1000 = 200

1000+200 = 1200

October = 1200

20% * 1200 = 240

1200-240 = 960

November = 960

An interval variable is a type of quantitative variable, where the difference between two values of the variable is meaningful and the values can be ordered.

Examples of interval variables include temperature (in Celsius or Fahrenheit), time (in seconds, minutes, hours, etc.), and dates. You can calculate the difference in temperature between two points, the length of time between two events, or the number of days between two dates. For example, let's say that the temperature outside is 25°C at noon and 29°C at 4 pm. The interval variable is the temperature, and the difference between the two temperatures is 4°C (29°C - 25°C = 4°C). Another example is the length of time between two events. Let's say that Event A began at 1 pm and Event B began at 2 pm. The interval variable is the length of time between the two events and the difference between the two times is 1 hour (2 pm - 1 pm = 1 hour). Finally, let's say that Date A is January 1, 2020 and Date B is January 10, 2020. The interval variable is the number of days between the two dates, and the difference between the two dates is 9 days (January 10,)An interval variable is a type of quantitative variable, where the difference between two values of the variable is meaningful and the values can be ordered.

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Answer:

the value of b is 3.

Step-by-step explanation:

The vertex of the graph of a parabola in the form y = a(x - h)^2 + k is given by (h, k), where h is the x-coordinate of the vertex and k is the y-coordinate of the vertex.

So in this case, the vertex of the graph of y = -1(x - 2)^2 + 3 is (2, 3), and the value of b is 3.

Answer:

b=3

Step-by-step explanation:

[tex]y=a(x-h)^2+k\\y=-1(x-2)^2+3[/tex]

If we compare the vertex-form equation of a parabola to our given function, we can see the vertex is [tex](2,3)[/tex], which means that b=3.

Answer: 15

Step-by-step explanation:

Base x Height = Area

The solution is x^-5y^3 = y^3/x^5.

An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.

here, we have,

given that,

x^-5×y^3      

[ as, the power of x is negative 5, so, we make it positive 5 by dividing}

=1/x^5 * y^3

=y^3/x^5

Hence, The solution is x^-5y^3 = y^3/x^5.

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A unit of measurement equal to one thousand meters is called a kilometer.

The prefix "kilo" means one thousand, so a kilometer is a unit of length in the metric system that is equal to 1000 meters. Kilometers are commonly used to measure longer distances, such as the distance between cities or countries, or the length of a marathon race. In contrast, smaller distances may be measured in meters, centimeters, or millimeters, which are all smaller units of length in the metric system.

a metric measurement of length that is equal to 1,760 yards or 5,280 feet. A thousandth of a liter is the same as a metric unit of capacity. a length measurement in meters that is one-thousandth of a meter. a time interval that is frequently used and equates to 60 seconds and 1/60 of an hour.

The complete question is:-

What word goes with a unit of measurement equal to one thousand meters?

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The coordinates of the top right corner of the screen (1280, 720).

The coordinates usually consist of two or three values, depending on whether you're working with a two-dimensional or three-dimensional system.

To answer your question, we need to know which coordinate system we're using. In this case, we're assuming that we're dealing with a two-dimensional system, which means that we only need to specify two coordinates: the x-coordinate and the y-coordinate.

The top right corner of the screen is located at a specific position that can be determined by measuring the distance from the origin (usually the bottom left corner) to that point. If we assume that the origin is located at (0, 0), then we need to find the x and y values that correspond to the top right corner.

The x-coordinate of the top right corner depends on the width of the screen, which can vary depending on the device you're using. For example, if the width of the screen is 1280 pixels, then the x-coordinate of the top right corner would be 1280.

The y-coordinate of the top right corner also depends on the height of the screen, which again can vary depending on the device. If the height of the screen is 720 pixels, then the y-coordinate of the top right corner would be 720.

Therefore, the resulting coordinates would be (1280, 720).

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Answer:

5=0.40x+3.50

He can get 3 extra ounces

Step-by-step explanation:

5.00-3.50=1.50 so an extra $1.50 to spend on extra ounces

1.50/0.40=3

0.40(3)+3.50= $4.70

So the most ounces he can get is 3

He will have $0.30 left

To increase the number of interviews, it should be recommended that 0 undergraduate students, 16 graduate students, and 4 faculty members be hired. There can be a maximum of 644 interviews by statistics

In 1947, George Dantzig invented an algorithm that allows us to take a system of equations and find its maximum or minimum values that make the equations most efficient. This method is used in linear programming to determine optimization.

If n = the number of interviews, then let x = the number of undergraduate students hired, y = the number of graduate students employed, z = the number of faculty members hired.

Maximization of n = 30x + 32y + 33z

The limitations are: x + y + z 20; 100x + 150y + 200z 3200; and 0;

The answer is 644 because x = 0, y = 16, z = 4.

To increase the number of interviews, it should be recommended that 0 undergraduate students, 16 graduate students, and 4 faculty members be hired. There can be a maximum of 644 interviews by statistics given.

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To have a unique outfit for each day of the week, you would need at 3 pairs of pants and 3 shirts.

To have a unique outfit for a month you would need at 6 pairs of pants and 5 shirts.

To have a unique outfit for each day of the year, you would need 26 pairs of pants and 15 pairs of shirts.

To find the unique outfits, you need to have enough clothes to have a unique outfit made from those clothes.

There are 7 days in a week. If you had 3 pairs of pants and 3 shirts, the unique outfits would be :

= 3 x 3

= 9 unique outfits

For a month :

= 6 x 5

= 30 unique outfits

For a year :

= 26 x 15

= 390 unique outfits for 365 days

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Answer: 27

Step-by-step explanation: in order to find out the LCM, you have to list out the multiples of 9 ( 9: 9, 18, 27, 36, etc.) and 27 ( 27: 27, 54, etc). Then you find the least common multiple which in this case is 27.