the scale of a map is 1cm: 7milesthe distance between two cities is 102.2 miles.find the distance between the two cities on the map

Answers

Answer 1

Ok, so:

We know that the scale given is the next one:

1cm = 7miles.

Now, let me draw something here below:

So, the cities are separated by a distance of 102.2 miles.

If 1 cm = 7 miles,

Then, we're going to convert 102.2 miles to our map scale.

102.2 miles * ( 1cm / 7 miles).

And we obtain:

14.6cm

The Scale Of A Map Is 1cm: 7milesthe Distance Between Two Cities Is 102.2 Miles.find The Distance Between

Related Questions

What’s the correct answer answer asap for brainlist please

Answers

Answer:

c. you can't be feeling alive with wearing,weakness of body and mind.

Monica did an experiment to compare two methods of warming an object. The results are shown in thetable below. Which statement best describes her results?

Answers

The correct answer is,

The temperature using method 2 changed exponentially.

3 hours 6 minutes 45 seconds Plus 8 hours 55 minutes 20 seconds

Answers

12h 2 minutes and 5 seconds

1) Adding 3 hours 6 minutes and 45 seconds to 8 hours 55 minutes and 20 seconds we can write like this:

2) Every time we hit 60'' (seconds) we add to its neighbor then we can find the following sum.

1h ----60'

1 minute ----60''

3) Then the sum of those is equal to 12h 2 minutes and 5 seconds

suppose s is between r and t use the segment addition postulate to solve for each variable RS equals 2z plus 6 St equals 4z - 3 RT = 5z + 12

Answers

If s is between r and t, then:

RS + ST = RT

Where RS = 2z + 6

ST = 4z - 3

RT = 5z + 12

So, we get:

(2z + 6) + (4z - 3) = 5z + 12

Solving for z, we get:

2z + 6 + 4z - 3 = 5z + 12

6z + 3 = 5z + 12

6z + 3 - 5z = 12

z + 3 = 12

z = 12 - 3

z = 9

Answer: z = 9

X 즈 - + 3 = 15 -4someone help me confused

Answers

First we have to transfer the number 3 the other side of equal sign as follows,

[tex]\begin{gathered} \frac{x}{-4}=15-3 \\ \frac{x}{-4}=12 \end{gathered}[/tex]

Now, we need to transfer (-4) to the other side of the equal side by multiplying with the number 12.

[tex]\begin{gathered} \frac{x}{-4}=12 \\ x=12\ast(-4) \\ x=-48 \end{gathered}[/tex]

Thus, the answer of the x is (-48).

Find two unit vectors orthogonal to both j-k and i+j.

Answers

The two unit vectors orthogonal to both j-k and i+j  are [tex]\frac{i}{\sqrt{3} }- \frac{j}{\sqrt{3} } -\frac{k}{\sqrt{3} }[/tex]

Let a bar = j- k  = < 0,1,-1>

b bar = i+j = <1,1,0>

the cross product a x b bar is orthogonal to both a and b bar

= i ( 0-(-1) ) -j ( 0-(-1) ) + r (0-1)

= i-j-k

A unit vector is a vector whose length is 1 unit

There the unit vector is :

[tex]\frac{i-j-k}{\sqrt{1^2+(-1)^2+(-1)^2} } = \frac{i-j-k}{\sqrt{3} }[/tex]

= [tex]\frac{i}{\sqrt{3} }-\frac{j}{\sqrt{3} }-\frac{k}{\sqrt{3} }[/tex]

The second unit vector orthogonal to both a and b bar would be negative of the previous vector.

= [tex]-\frac{i}{\sqrt{3} }-\frac{j}{\sqrt{3} }-\frac{k}{\sqrt{3} }[/tex]

Hence the two unit vectors orthogonal to both j-k and i+j are  [tex]\frac{i}{\sqrt{3} }- \frac{j}{\sqrt{3} } -\frac{k}{\sqrt{3} }[/tex]

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6. sin D - Ог F 25 ot E 7. cos F. 24 8. sin F Nodule 13

Answers

In the given triangle :

FD = 25, FE = 7, DE = 24

SinD

From the trignometric ratio of sin: It express as the ratio of measurement of the side opposite to the angle to the measurement of hypotenuse of triangle DEF,

So, the SinD is express as :

[tex]\begin{gathered} \sin D=\frac{Opposite\text{ side}}{Hypotenuse} \\ \sin D=\frac{FE}{DF} \\ \sin D=\frac{7}{25} \end{gathered}[/tex]

sin D = 7/25

cos F

From the trignometric ratio of cos : It expresses as the ratio of measurement of the side adjacent to the angle and to the hypotenuse of the triangle

So, the Cos F is express as :

[tex]\begin{gathered} \cos F=\frac{Adjacent\text{ side}}{Hypotenuse} \\ \cos F=\frac{FE}{DF} \\ \cos F=\frac{7}{25} \end{gathered}[/tex]

cos F = 7/25

Sin F

From the trignometric ratio of sin: It express as the ratio of measurement of the side opposite to the angle to the measurement of hypotenuse of triangle DEF,

so, Sin F is express as :

[tex]\begin{gathered} \sin F=\frac{Opposite\text{ side}}{Hypotenuse} \\ \sin F=\frac{DE}{DF} \\ \sin F=\frac{24}{25} \end{gathered}[/tex]

sin F = 24/25

Answer :

sin D = 7/25

cos F = 7/25

sin F = 24/25

A line passes through the point −6, 3 and has a slope of 32 .Write an equation in slope-intercept form for this line.

Answers

The equation of the straight line that passes through the point (-6, 3) will be y = 32x + 195.

What is the slope - intercept form of the equation of a straight line?

The slope - intercept form of the equation of a straight line is -

y = mx + c

Where -

[m] is the slope of the line.

[c] is the y - intercept.

Given is a line that passes through the point (−6, 3) and has a slope of 32.

We know that the slope - intercept form can be written as -

y = mx + c

Now, the slope of the line = [m] = 32

Since, the line passes through the point (-6, 3), we can write -

3 = 32 x -6 + c

3 = -192 + c

c = 3 + 192

c = 195

So, the equation of the straight line that passes through the point (-6, 3) will be -

y = 32x + 195

Therefore, the equation of the straight line that passes through the point (-6, 3) will be y = 32x + 195

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write the following basic forms in their single form
2√3

Answers

The expression which represents the written form of the basic form expression; 2√3 as a single form is; √12.

What is the single form expression which is equivalent to the basic form expression; 2√3?

It follows from the task content that the basic form expression be written as it's equivalent single form expression.

Since the given radical expression is; 2√3; it follows that the expression can be written as a single form expression as follows;

First, the square of 2, 2² is equal to 4;

Hence, by the converse;

2 = √4.

The given expression can therefore be written as; √4 • √3.

The expression above can therefore be written in its single form as; √(4 × 3) = √12.

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A bag contains 3 gold marbles, 10 silver marbles, and 23 black marbles. You randomly select one marblefrom the bag. What is the probability that you select a gold marble? Write your answer as a reduced fractionPlgold marble)

Answers

ANSWER

P(gold marble) = 1/12

EXPLANATION

In total, there are:

[tex]3+10+23=36[/tex]

36 marbles in the bag, where only 3 are gold marbles.

The probability is:

[tex]P(\text{event)}=\frac{\#\text{times the event can happen}}{\#\text{posible outcomes}}[/tex]

In this case, the number of posible outcomes is 36, because there are 36 marbles in the bag. The number of times the event can happen is 3, because there are 3 gold marbles:

[tex]P(\text{gold marble)}=\frac{3}{36}=\frac{1}{12}[/tex]

Red Tickets: 50 tickets for $37.50A sign at the fair advertises ticket prices for the carnival games,Blue Tickets: 20 tickets for $16.00Yellow Tickets: 5 tickets for $5.00Find the price per ticket for each:Red ticketBlue Ticket:Yellow Ticket:How much would 40 red tickets costs?123456 7 10

Answers

The price per ticket can be calculated as follows;

[tex]\begin{gathered} \operatorname{Re}d=\frac{\text{Price}}{No\text{ of tickets}} \\ \operatorname{Re}d=\frac{37.50}{50} \\ \operatorname{Re}d=0.75 \\ \text{Blue}=\frac{16}{20} \\ \text{Blue}=0.8 \\ \text{Yellow}=\frac{5}{5} \\ \text{Yellow}=1.00 \end{gathered}[/tex]

The price per ticket for each is given as;

Red tickets = $0.75

Blue tickets = $0.80

Yellow tickets = $1.00

Therefore, 40 red tickets would cost

40 Red = 0.75 x 40

40 Red tickets = $30.00

a construction company orders tile flooring for the kitchen in three bathrooms of a new home the kitchen floor measures 48 square feet 2 bathrooms have floor that each Measure 30 and 1/2 square feet the third bathroom floor measures 42 1/2 square feet if the tile cost 2.39 per square foot what is that the least amount of money to the nearest cent the company spends on tile for all three bathrooms

Answers

We are not concerned with the tiles needed for the kitchen.

From the given information, there are two bathroom floors with the same measurement in terms of area. The area of each floor is 30.5 square feet

Area of both bathroom floors = 30.5*2 = 61 square feet

Area of the third bathroom = 42.5 square feet

Area of the three bathroom floors = 61 + 42.5 = 103.5 square feet

Given that the tile costs 2.39 per sqare foot, the least amount of money that the company would spend for all three tiles is

103.5 * 2.39 = 247.365

Rounding up to the nearest cent means rounding up to the nearest hundredth or 2 decimal places

Rounding up to the nearest cent, it becomes 247.37

determine whether or not each spaceship trip below has the same speed as Saiges spaceship

Answers

1) Since Saige's spaceship makes 588 km in 60 seconds we can find its velocity:

[tex]\begin{gathered} V=\frac{d}{t} \\ V=\frac{588}{60}=\frac{49}{5}\text{ =9.8 km /s} \\ \\ V_2=\frac{441}{45}=\frac{49}{5} \\ V_3=\frac{215}{25}=\frac{43}{5} \\ V_4=\frac{649}{110}=\frac{59}{10} \end{gathered}[/tex]

2) After simplifying we can state:

441/45 = has the same speed as Saige's spaceship

215/25 = does not have the same speed as Saige's space

649/110 =does not have the same speed as Saige's space

Given the parametric equations x = 7cos θ and y = 5sin θ, which of the following represents the curve and its orientation?

Answers

We have the following parameters

[tex]\begin{gathered} x=7cos\theta \\ y=5sin\theta \end{gathered}[/tex]

the general equation of a circle with center (0,0) is the following,

[tex]x^2+y^2=r^2[/tex]

Let's use the following tigonometric identity,

[tex]sin^2\theta+cos^2\theta=1[/tex]

solving for cos and sin in the equations we are given,

[tex]cos\theta=\frac{x}{7},sin\theta=\frac{y}{5}[/tex]

replace,

[tex](\frac{y}{5})^2+(\frac{x}{7})^2=1[/tex]

Since we have two different numbers in the denominator, this is not a circle equation but an elipse, of the form,

[tex]\frac{y^2}{a^2}+\frac{x^2}{b^2}=1[/tex]

where,

a is the vertex and,

b is the covertex

thus, in the x axis, the vertex is 7 and the y-axis the covertex is 5

Now, let's determine the direction by replacing

when Θ = 0 , then x = 7*cos0 = 7*1 = 7 , and y = 5*sin0 = 5*0 = 0

when Θ = 90° or π/2 , then x = 7*cos90° = 7*0 = 0 , and y = 5sin90° = 5*1 = 5

If we draw this, we can see that the direction is counterclockwise as in the bottom right image.

Write an equation and solve to find the value of your variable. 7.3 less than -2 times a number is the same as 16 1/2. n=?

Answers

The equation is -2n - 7.3 = 16 1/2

The value of the variable n = -11.9

STEP - BY - STEP EXPLANATION

What to find?

• Write the equation of the given statement.

,

• The value of n.

Given:

find the value of your variable. 7.3 less than -2 times a number is the same as 16 1/2. n=?​

To solve follow the steps below:

Step 1

Translate the given statement into equation.

Let n be the number.

-2n - 7.3 = 16 1/2

Step 2

Convert 16 1/2 to decimal.

-2n - 7.3 = 16.5

Step 3

Add 7.3 to both-side of the equation.

-2n = 16.5 + 7.3

Step 4

Simplify the right-hand side of the equation.

-2n =23.8

Step 5

Divide both-side of the equation by -2.

[tex]\frac{\cancel{-2}n}{\cancel{-2}}=\frac{23.8}{-2}[/tex]

n = -11.9

Therefore, the value of the variable n = -11.9

In ACDE, m/C= (5x+18), m/D= (3x+2), and m/B= (2+16)°.

Answers

Angle (D) = m(D) = 50°, CDE provides the following: 3. angles

m=C=(5x+18), m=D=(3x+2), and m=E=(x+16)°.The total of the angles in a triangle is 180°

What are angles?An angle is a figure in Euclidean geometry made up of two rays that share a common terminal and are referred to as the angle's sides and vertices, respectively. Angles created by two rays are in the plane where the rays are located. The meeting of two planes also creates angles. We refer to these as dihedral angles.

CDE provides the following: 3. angles

m<C=(5x+18),m<D=(3x+2), andm<E=(x+16)degree.

The total of the angles in a triangle is 180 degrees, so:

"mC + mD + mE = 180°"(5x+18)° + (3x+2)° + (x+16)° = 180°5x + 18 + 3x + 2 + x + 16 = 180°5x + 3x + x + 18 + 2 + 16 = 180°9x +36= 180°

From both sides, deduct 36 as follows:

9x + 36 - 36 = 180° - 36°9x = 144°x = 144°/9x = 16

From the aforementioned query, we are requested to determine:

angular D (m<D)

Hence:

m∠D=(3x+2)°m∠D=( 3 × 16 + 2)°m∠D=(48 + 2)°m∠D= 50°

Therefore, angle (D) = m(D) = 50°, CDE provides the following: 3. angles

m=C=(5x+18), m=D=(3x+2), and m=E=(x+16)°.The total of the angles in a triangle is 180°

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Find the equation of the line parallel to the line y=-1, going through point (-5,4)

Answers

In this problem, want to find the equation of a line that will be parallel to a given function through a point.

Recall that parallel lines have the same slope.

We are given the line

[tex]y=-1[/tex]

and the point

[tex](-5,4)[/tex]

Notice that the equations is technically in slope-intercept form, by the value of the slope will be 0:

[tex]y=0x-1[/tex]

Therefore, the slope of the line through (-5,4) will also be zero. We can use that information to find the equation.

Using the form

[tex]y=mx+b[/tex]

we can substitute the point and the slope to solve for b:

[tex]\begin{gathered} 4=0(-5)+b \\ \\ 4=b \end{gathered}[/tex]

So, the equation of our line is:

[tex]y=0x+4\text{ or }\boxed{y=4}[/tex]

A committee must be formed with 4 teachers and 4 students. If there are 7 teachers to choose from, and 9 students, how many different ways could the committee be made?

Answers

ANSWER

4,410

EXPLANATION

The number of ways we can choose 4 teachers from 7 teachers is,

[tex]_7C_4=\frac{7!}{(7-4)!\times4!}=\frac{7\times6\times5\times4!}{3!\times4!}=\frac{7\times6\times5}{3\times2}=\frac{7\times6\times5}{6}=7\times5=35[/tex]

There are 35 ways of choosing 4 teachers out of 7.

And the number of ways we can choose 4 students from 9 students is,

[tex]\begin{gathered} _9C_4=\frac{9!}{(9-4)!\times4!}=\frac{9\times8\times7\times6\times5\times4!}{5!\times4!}=\frac{9\times8\times7\times6\times5}{5\times4\times3\times2} \\ _9C_4=\frac{9\times8\times7}{4}=\frac{9\times(2\times4)\times7}{4}=9\times7\times2=126 \end{gathered}[/tex]

There are 126 ways of choosing 4 students out of 9.

The committee is formed by 4 teachers and 4 students. The number of ways it can be made is,

[tex]_7C_4\times_9C_4=35\times126=4,410[/tex]

Hence, there are 4,410 ways to choose 4 students and 4 teachers out of 9 students and 7 teachers.

Miscavage Corporation has two divisions: the Beta Division and the Alpha Division.

The Beta Division has:

sales of $320,000,
variable expenses of $158,100,
and traceable fixed expenses of $72,300.
The Alpha Division has:

sales of $630,000,
variable expenses of $343,800,
and traceable fixed expenses of $135,100.
The total amount of common fixed expenses not traceable to the individual divisions is $137,200.

What is the total company's net operating income?

Answers

The total net operating income (NOI) of both divisions is $1,03,500.

What is net operating income?Real estate professionals use the formula known as Net Operating Income, or NOI, to quickly determine the profitability of a specific investment. After deducting required operating costs, NOI calculates the revenue and profitability of investment real estate property. Let's say, for illustration purposes, that you own a duplex with a gross monthly income of $2,000 and monthly operating expenses of $400. You would start with your annual gross income ($24,000) and deduct your operating expenses ($4,800) to arrive at your net operating income.

So, the total net operating income:

The formula for net operating income: NOI = Gross Income - Operating Expenses

Now, substitute the values and get the NOI as follows:

NOI = Gross Income - Operating ExpensesNOI = (Sales+Sales) - [(variable expenses + variable expenses) + (fixed expenses + fixed expenses) + 137,200] NOI = (320,000+630,000) - [(158,100 + 343,800) + (72,300 + 135,100) + 137,200]NOI = 9,50,000 - (5,01,900 + 2,07,400 + 137,200)NOI = 9,50,000 - 8,46,500NOI = 1,03,500

Therefore, the total net operating income (NOI) of both divisions is $1,03,500.

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find the measures of GH and CH.

Answers

The length of the lines GH and CH are 16 units and 12 units.

What is a line?A line is an object in geometry that is infinitely long and has neither width nor depth nor curvature. Since lines can exist in two, three, or higher-dimensional spaces, they are one-dimensional objects. The term "line" can also be used to describe a line segment in daily life that has two points that serve as its ends. In geometry, lines are drawn with arrows at either end to indicate that they extend indefinitely. Two line points can be used to name a line (for example, AB) or just a letter, usually in lowercase (for example, line m ). The ends of a line segment are two.

So, the measure of lines GH and CH:

We know that AC ⊥ GH hence cuts GH in two equal lines.

GB = BH GB is 8 units then BH is also 8 units.GB = BH = 8 units.

But,

GH = GB + BHGH = 8 + 8GH = 16 units

We can observe that △GCH is an isosceles triangle.

GC = CHGC = CH = 12 units

Therefore, the length of the lines GH and CH is 16 units and 12 units.

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Solve each equation for the variable. h/2 + 3.5 = 7.1

Answers

To answer this question, we can proceed as follows:

[tex]\frac{h}{2}+3.5=7.1[/tex]

1. Subtract 3.5 to both sides of the equation:

[tex]\frac{h}{2}+3.5-3.5=7.1-3.5\Rightarrow\frac{h}{2}+0=3.6[/tex]

2. Multiply by 2 to both sides of the equation:

[tex]2\cdot\frac{h}{2}=2\cdot3.6\Rightarrow h=7.2[/tex]

We can check this result as follows:

[tex]\frac{7.2}{2}+3.5=3.6+3.5=7.1\Rightarrow7.1=7.1[/tex]

This result is TRUE. Then, the value for h = 7.2.

Solve each system of equations algebraically.[tex]y = {x}^{2} + 4 \\ y = 2x + 7[/tex]

Answers

From the problem, we two equations :

[tex]\begin{gathered} y=x^2+4 \\ y=2x+7 \end{gathered}[/tex]

Since both equation are defined as y in terms of x, we can equate both equations.

[tex]\begin{gathered} y=y \\ x^2+4=2x+7^{} \end{gathered}[/tex]

Simplify and solve for x :

[tex]\begin{gathered} x^2+4=2x+7 \\ x^2-2x+4-7=0 \\ x^2-2x-3=0 \end{gathered}[/tex]

Factor completely :

[tex]\begin{gathered} x^2-2x-3=0 \\ (x-3)(x+1)=0 \end{gathered}[/tex]

Equate both factors to 0 then solve for x :

x - 3 = 0

x = 3

x + 1 = 0

x = -1

We have two values of x, x = 3 and -1

Substitute x = 3 and -1 to any of the equation, let's say equation 2 :

For x = 3

y = 2x + 7

y = 2(3) + 7

y = 6 + 7

y = 13

One solution is (3, 13)

For x = -1

y = 2x + 7

y = 2(-1) + 7

y = -2 + 7

y = 5

The other solution is (-1, 5)

The answers are (3, 13) and (-1, 5)

4. A bookstore owner ordered 4032 books. The books were sent in 9 boxes. Each box hadthe same number of books. How many books were in each box?

Answers

448 books in each box

Number of books: 4032

Number of boxes: 9

Since each box had the same number of books, divide the number of books by the number of boxes.

4032/9 = 448

HELP PLEASEEEEE!!!!!!

Answers

The rational number is -91/100 or -0.91.

What is Rational number?

Any number of the form p/q, where p and q are integers and q is not equal to 0, is a rational number. The letter q stands for the set of rational numbers.

The word "ratio" is where the word "rational" first appeared. Rational numbers are therefore closely tied to the idea of fractions, which stand for ratios. In other terms, a number is a rational number if it can be written as a fraction in which the numerator and denominator are both integers.

Given:

We have to find the rational number between -1/3 and -1/2

Tale LCM for 3 and 2 = 6

-1/3 x 2/2 and -1/2 x 3/3

-2/6 and -3/6

Now, multiply 10

-2/6 x 10/10  and -3/6 x 10/10

-20/60 and -30/60.

Hence, the rational number is -21/60.

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1: Are the two slopes parallel.
perpendicular or neither?

Answers

The slopes of two parallel lines are the same, while the slopes of two perpendicular lines are the opposite reciprocals of each other. Each line has infinitely many lines that are parallel to it and infinitely many lines that are perpendicular to it.

P.S hopes this helps

Over the next 10 years, town A is expecting to gain 1000 people each year. During the same time period, the population of town B is expected to increase by 5% each year. Both town A and town B currently have populations of 10,000 people. The table below shows the expected population of each town for the next three years.Which number of years is the best approximation of the time until town A and town B once again have the same population?

Answers

From the given figure we can see

The population in town A is increased by a constant rate because

[tex]\begin{gathered} 11000-10000=1000 \\ 12000-11000=1000 \\ 13000-12000=1000 \end{gathered}[/tex]

Since the difference between every 2 consecutive terms is the same, then

The rate of increase of population is constant and = 1000 people per year

The form of the linear equation is

[tex]y=mx+b[/tex]

m = the rate of change

b is the initial amount

Then from the information given in the table

m = 1000

b = 10,000

Then the equation of town A is

[tex]y=1000t+10000[/tex]

Fro town B

[tex]\begin{gathered} R=\frac{10500}{10000}=1.05 \\ R=\frac{11025}{10500}=1.05 \\ R=\frac{11576}{11025}=1.05 \end{gathered}[/tex]

Then the rate of increase of town by is exponentially

The form of the exponential equation is

[tex]y=a(R)^t[/tex]

a is the initial amount

R is the factor of growth

t is the time

Since R = 1.05

Since a = 10000, then

The equation of the population of town B is

[tex]y=10000(1.05)^t[/tex]

We need to find t which makes the population equal in A and B

Then we will equate the right sides of both equations

[tex]10000+1000t=10000(1.05)^t[/tex]

Let us use t = 4, 5, 6, .... until the 2 sides become equal

[tex]\begin{gathered} 10000+1000(4)=14000 \\ 10000(1.05)^4=12155 \end{gathered}[/tex][tex]\begin{gathered} 10000+1000(5)=15000 \\ 10000(1.05)^5=12763 \end{gathered}[/tex][tex]\begin{gathered} 10000+1000(6)=16000 \\ 1000(1.05)^6=13400 \end{gathered}[/tex][tex]\begin{gathered} 10000+1000(30)=40000 \\ 10000(1.05)^{30}=43219 \end{gathered}[/tex]

Since 43219 approximated to ten thousand will be 40000, then

A and B will have the same amount of population in the year 30

The answer is year 30

How many times in the parabola does a line intersect?

Answers

The line can intersect the parabola at one or two points.

See the example below.

The black line intersects the parabola at (1, -1)

The blue line intersects the parabola at two points: (0, 0) and (4, 8).

Question 1-3
The distance traveled by car, for a duration of time, can be modeled with the equation s= 45t, where s is the distance, in miles, and it is
the time, in hours. Which graph represents this proportional relationship correctly?
120
105
90
Distance (mi)
Distance (mi)
75
60
45
120
30
105
90
15
75
60
45
30
0
15
2
Time (hr)
Time (hr)
100
lon
3
+X
X
120
105
90
Distance (mi)
75
60
45
30
15
0
1
2
Time (hr)
co
X

Answers

The equation s = 45t, where s is the distance in miles and it is the time in hours, can be used to simulate the distance driven by a car over a period of time then the car will travel 135 hours in 3 hours.

What is meant by the constant of proportionality?

The ratio connecting two given numbers in what is known as a proportional relationship is the constant of proportionality. Constant ratio, constant rate, unit rate, constant of variation, and even rate of change are other names for the constant of proportionality.

Given: The distance traveled by car at a constant rate is proportional to the time spent driving.

In the equation d = 45 t, d denotes the distance (in miles) and t denotes the time (in hours).

d / t = 45 miles per hour

The constant of proportionality = 45 miles per hour.

Also, the distance traveled by car in 1 hour = 45 miles

The distance traveled by car in 3 hours = 3 × 45 = 135 miles

Therefore, a car will travel 135 hours in 3 hours.

The complete question is:

The distance traveled by car at a constant rate is proportional to the time spent driving. In equation d = 45t, d represents the distance (in miles) and t represents the time (in hours).

A. What is the constant of proportionality? _____ miles per hour

B. How far will the car travel in 3 hours? _______ miles

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Help 20 points (show ur work)
There are 2 questions

Answers

The length of the trail is equal to 3mi and the selling price of the item is equal to $120.

Ratio

In mathematics, a ratio shows how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six. Similarly, the ratio of lemons to oranges is 6:8 and the ratio of oranges to the total amount of fruit is 8:14.

In this question, we have to use the ratio given to determine the length of the trail.

Given that the ratio is 5in : 2mi, we have to convert the values to uniform units.

[tex]1mi = 63360in\\2mi = x\\x = 126720[/tex]

The ratio is now 5in : 126720in

Given that on the map, the length is 7.5in

[tex]5 = 126720\\7.5 = x\\x = 190080in[/tex]

Let's convert this into mi.

[tex]190080in = 3mi[/tex]

The actual length of the trail is 3in.

b)

To find the selling price of the item, let's use the percentage given to do that.

discount = 40%actual price = $200

We can find 40% of 200 and then subtract the value from 200.

[tex]40\% of 200 = 0.4 * 200 = 80[/tex]

The discount price is $80 and we can find the selling price here.

[tex]selling price = actual price - discount price\\selling price = 200 - 80\\selling price = 120[/tex]

The selling price of the item is $120

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solve using the quadratic formulax^2+2x-17=0

Answers

[tex]\begin{gathered} x^2+2x-17=0 \\ \text{let's use the quadratic formula} \\ ax^2+bx+c=0 \\ x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ \text{ In this case:} \\ a=1 \\ b=2 \\ c=-17 \end{gathered}[/tex][tex]\begin{gathered} x=\frac{-2\pm\sqrt[]{2^2-(4)(1)(-17)}}{2(1)} \\ x=\frac{-2\pm\sqrt[]{4+68}}{2} \\ x=\frac{-2\pm\sqrt[]{72}}{2} \\ x=\frac{-2\pm6\sqrt[]{2}}{2} \\ ------------- \\ x=-1+3\sqrt[]{2} \\ or \\ x=-1-3\sqrt[]{2} \end{gathered}[/tex]

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