What is the equation of the line that passes through (7,4) and (4,-2)?
O y= 2x - 10
O y=-2x - 10
O y=-2x + 18
y= 2x + 18​

Answers

Answer 1

Answer:

y = 2x - 10

Step-by-step explanation:

First, we find the slope.

m = slope = (y2 - y1)/(x2 - x1) = (-2 - 4)/(4 - 7) = -6/(-3) = 2

Now we use the slope in the slope-intercept form of the equation of a line.

y = mx + b

y = 2x + b

We use the coordinates of one of the given points for x and y, and we solve for b. Let's use the point (7, 4), so we have x = 7 and y = 4.

4 = 2(7) + b

4 = 14 + b

Subtract 14 from both sides.

-10 = b

Now we replace b with -10.

y = 2x - 10

Answer: y = 2x - 10


Related Questions

Let p: x < −3 Let q: x > 3 What is represented by p ∨ q?

Answers

Answer:

p v q = x < -3 or x > 3

Step-by-step explanation:

We are given

p: x < -3

q: x > 3

and we need to find p v q

v symbols represents disjunction and in simple terms it is called "or"

So, p v q represents either p holds or q holds

So, p v q = x < -3 or x > 3

[tex]x<-3 \vee x>3[/tex]

The sum of two angles is 180. One of the angles measures 96 degrees. What is the measure of the second angle?

Answers

Answer:

How many characteristics are used to describe living things?

Step-by-step explanation:

Answer: 84

Step-by-step explanation:

Subtract the total (180 degrees) from the known angle (96 degrees).

180-96=84

A walking path across a park is represented by the equation y = -2x+ 5. A
new path will be built perpendicular to this path. The paths will intersect at
the point (-2,9). Identify the equation that represents the new path.
Help

Answers

Answer:

[tex]y = \frac{1}{2}x+10[/tex]

Step-by-step explanation:

The given path is:

y = -2x+5

Comparing with the standard form of equation:

y = mx+b

So,

m = -2

We know that product of slopes of two perpendicular lines is -1

Let m1 be the slope of the perpendicular line

m*m1=-1

-2*m1 = -1

m1 = -1/-2

m1 = 1/2

So the slope of perpendicular path is 1/2.

Since the new path passes through (-2,9)

[tex]9 = \frac{1}{2}(-2) +b\\9 = -1 +b\\b = 10[/tex]

Putting the values of m and b in standard form

[tex]y = \frac{1}{2}x+10[/tex]

Hence the equation of new path is:

[tex]y = \frac{1}{2}x+10[/tex] ..

find each sum or difference. round to the place value of the less precise measurement.7 cm - 4.4 cm​

Answers

Answer:

2.6  cm

Step-by-step explanation:

7 - 4.4 = 2.6 cm

-

Final answer:

The difference between 7 cm and 4.4 cm is 2.6 cm. But since we need to round to the place value of the less precise measurement (7 cm), our final answer is 3 cm.

Explanation:

To find the difference between 7 cm and 4.4 cm, we simply subtract the smaller number from the larger one. So, we have 7 cm - 4.4 cm which equals 2.6 cm. However, we need to round to the place value of the less precise measurement. The least precise measurement here is 7 cm (as it's rounded to the nearest whole number), so we round our answer to the nearest whole number as well, which gives us 3 cm.

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Angle a is opposite to

Answers

Angle c because b come before c

Angle a is opposite to angle b because they're vertical angles.

What are vertical angles?

It should be noted that vertical angles mean the angle that are opposite each other.

In this case, angle a is opposite to angle b because they're vertical angles. This means they are congruent. In the image of the intersecting roads, angles 'a' and 'b' are opposite, and angles 'c' and 'd' are opposite. Another name for opposite angles is vertical angles because the two angles share the same vertex or corner.

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For the square, find coordinates for A without using any new variables.
(0, 0)
(0,c)
(c,0)
(d, 0)

Answers

Answer:

B. Your didn't move but you went up to the C marking.

The  coordinates for point A of the square without using any new variables will be (O, d), i.e. option A.

What is square?

Square is a 2D shape, having all sides equal and interior angles at 90 degrees.

We have,

A square on a graph with vertex at O, A, B, (c, d).

Now,

Side OB and A(c, d) are on x-axis,

While side OA and A(c, d) are on y-axis.

So,

We have to find the coordinates of A ,

So,

We know that sides of a squares are equal,

So,

OA = B(c, d)

So,

The coordinates of A will be (0, d).

Hence, we can say that the  coordinates for point A of the square without using any new variables will be (O, d), i.e. option A.

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After a gas-filled balloon is released, it rises 90 feet by the end of the first minute. By the end of the second minute, the balloon rises 120 feet, and by the end of the third minute, it rises 150 feet. How many feet would the balloon rise in 8 minutes?

Answers

Answer: 300 feet

Step-by-step explanation:

Note that:

[tex]120-90 = 30[/tex]

[tex]150-120 = 30[/tex].

Then the balloon rises at a constant rate of 30 meters per minute.

We can represent this situation through an arithmetic sequence as shown below

[tex]a_n =a_1 + d(n-1)[/tex]

Where [tex]a_1=90[/tex] is the first term of the sequence and [tex]a_n[/tex] is the n-th term of the sequence and [tex]d=30[/tex] is the common difference between two consecutive terms.

In this case we look for the height of the balloon after 8 minutes.

Then we look for [tex]a_8[/tex]

[tex]a_8 = 90 + 30(8-1)[/tex]

[tex]a_8 = 90 + 30(7)[/tex]

[tex]a_8 = 300[/tex]

Answer:

[tex]\boxed{\text{300 ft}}[/tex]

Step-by-step explanation:

You have an arithmetic sequence in which

a₁ =  90

a₂ = 120

a₃ = 150

1. Calculate the explicit formula

This is an arithmetic sequence, because there is a constant difference of 30 between consecutive terms.

The explicit formula for the nth term of an arithmetic sequence is

aₙ = a₁ + d(n - 1 )

a₁ is the first term, and d is the difference in value between consecutive terms. Thus,  

aₙ = 90 + 30(n - 1) = 90 + 30n - 30

aₙ = 30n + 60

2. Calculate the eighth term

a₈ = 30 × 8 + 60 = 240 + 60 = 300

[tex]\text{In 8 min, the balloon rises }\boxed{\textbf{300 ft}}[/tex]

julia collects colored beads for craft projects. Of julia's beads, 4/9 are silver, 1/5 are, gold and 1/4 are blue. The rest of the beads are red. Which expression give the closest estimate of the fraction of red beads Julia has?

i need an explanation on how to solve it

Answers

Answer:

19 red beads

Step-by-step explanation:

We first need to find a common denominator of 4/9, 1/5 and 1/4.

The common denominator is 180. Like in an expression, what we do to one side we have to do to the other.

Silver - 180/9 = 20 ; 20*4 = 80 so there are roughly 80 sliver beads.

Gold - 180/5 = 36 ; 36*1 = 36 so there are roughly 36 gold beads.

Blue - 180/4 = 45 ; 45*1 = 45 so there are roughly 56 blue beads.

180 - (silver+gold+blue) = red beads

180-161 = 19 red beads b/c ----->

80+36+45+19 = 180

Final answer:

To find the estimate of beads that are red, you add the fractions of silver, gold, and blue beads first and subtract that from the total. In this case, it is estimated that the red beads are 19/180 of Julia's total collection.

Explanation:

To find the fraction of the red beads that Julia collects for her craft projects, we first need to sum up the fractions of the silver, gold, and blue beads as these are given fractions.

By addition, we have 4/9 (silver beads) + 1/5 (gold beads) + 1/4 (blue beads). Add these fractions together to get the total fraction of non-red beads. Now, to get the fractions into a form that's easier to add, find the least common denominator (LCD).

The LCD of 9, 5, and 4 is 180. Then, convert each fraction to have this denominator: 80/180 (silver) + 36/180 (gold) + 45/180 (blue). Now you can add these fractions directly to get 161/180.

Since the total should be 1 (or 180/180 to keep the denominator constant), to find the fraction of the red beads, subtract the sum of the other beads from 1. Thus, 1 - 161/180 = 19/180. Therefore, Julia’s collection consists of approximately 19/180 red beads.

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evaluate h(x)=2.8x^3+0.01x^2 - 1 for x=1 and x=2

Answers

Answer:

h(1) = 1.81 and h(2) = 21.44

Step-by-step explanation:

* Lets read the problem and solve it

- Evaluate means find the value, so evaluate h(x) means find the value

 of it at the given values of x

∵ h(x) = 2.8x³ + 0.01x² - 1

∵ x = 1 and x = 2

- Then find h(1) by substitute x by 1 and find h(2) by substitute x by 2

# At x = 1

∴ h(1) = 2.8(1)³ + 0.01(1)² - 1

∴ h(1) = 2.8(1) + 0.01(1) - 1

∴ h(1) = 2.8 + 0.01 - 1

∴ h(1) = 1.81

# At x = 2

∴ h(2) = 2.8(2)³ + 0.01(2)² - 1

∴ h(2) = 2.8(8) + 0.01(4) - 1

∴ h(2) = 22.4 + 0.04 - 1 ⇒ simplify

∴ h(2) = 21.44

* h(1) = 1.81 and h(2) = 21.44

simplify (x^2/9)^3/8

Answers

Answer:

x^1/12

Step-by-step explanation:

Hope this helped!

Which equation shows the commutative property of addition?

Answers

Answer:

A-4+3=3+4

Step-by-step explanation:

The commutative property of addition, also known as the order property of addition, means that a given group of numbers can be added in any order and their sum will always be the same.

Answer:

A

Step-by-step explanation:

commutative is where one equals out to another and then when using addition you have to use the plus sign

y=4x – 10y=2

What is the solution to the system of equations?

(3, 2)  

(2, 3)

(–2, 2)

(2, –2)

Answers

Answer:

(3,2)

Step-by-step explanation:

y=4x-10 y=2

2=4x-10

12=4x

3=x , so that's (3, _)

y=2 is given, so (3,2)

Answer:

a

Step-by-step explanation:

Which expression is equivalent to 5^ square root 32x5^ y10^ z15^

Answers

Answer:

Option B is correct.

Step-by-step explanation:

[tex]\sqrt[5]{32x^5y^10z^15}[/tex]

We need to solve the above expression.

32 = 2x2x2x2x2 = 2^5

and we know 5√ = 1/5

solving

[tex]=\sqrt[5]{2^5x^5y^{10}z^{15}}\\=(2^5)^{1/5}(5x^5)^{1/5}(y^{10})^{1/5}(z^{15})^{1/5}\\=2xy^2z^3[/tex]

So, simplified form is 2xy^2z^3

So, Option B is correct.

Which statement is true of x2 + 8x – 6?
(x – 2) is a factor of the polynomial.
(x + 2) is a factor of the polynomial.
(x – 4) is a factor of the polynomial.
The polynomial is prime.

Answers

Answer:

  The polynomial is prime.

Step-by-step explanation:

There are no factors of -6 that add to give +8. The polynomial cannot be factored using integers. It is prime.

Answer:The polynomial is prime.

Step-by-step explanation:

What is the ratio for the surface areas of the rectangular prisms shown below, given that they are similar and that the ratio of their edge lengths is 8.5?

Answers

Answer:

Option D. [tex]\frac{64}{25}[/tex]

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor and the ratio of its surface areas is equal to the scale factor squared

In this problem

The scale factor is equal to [tex]\frac{8}{5}[/tex]

therefore

The ratio of its surface areas is equal to

[tex](\frac{8}{5})^{2}=\frac{64}{25}[/tex]

Final answer:

The ratio of the surface areas of the two similar rectangular prisms, given the ratio of their edge lengths is 8.5, is the square of that ratio, which is 72.25.

Explanation:

If the rectangular prisms are similar, their corresponding sides are proportional. Given that the ratio of their edge lengths is 8.5, we know that the corresponding sides of the two prisms are in the ratio of 8.5:1.

Since surface area is determined by the area of each face, and the area of each face is proportional to the square of the length of the corresponding edge, we square the ratio of their edge lengths to find the ratio of their surface areas.

Let's denote the ratio of surface areas as S. We have:

S = (8.5)² = 72.25

Therefore, the ratio for the surface areas of the rectangular prisms is 72.25:1. This means that the surface area of the larger prism is 72.25 times greater than the surface area of the smaller prism.

For a circle of radius 9 feet, find the arc length s cut off by a central angle of 6°

Answers

[tex]\bf \textit{arc's length}\\\\ s=\cfrac{\pi \theta r}{180}~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad degrees\\ \cline{1-1} r=9\\ \theta =6 \end{cases}\implies s=\cfrac{\pi (6)(9)}{180}\implies s=\cfrac{3\pi }{10}\implies s\approx 0.94[/tex]

The arc length s cut off by a central angle of 6 degrees

[tex]$s=\frac{3 \pi}{10} f t$[/tex].

How to estimate arc length?

Let 's' define the arc length, '[tex]$\theta$[/tex]' define the central angle in radians and 'r' be the radius of the circle. Then a central angle of '[tex]$\theta$[/tex]' radians in a circle of radius r subtends an arc of length.

We must define [tex]$6^{\circ}$[/tex] in radians

[tex]$s=r \theta$[/tex]

[tex]$180^{\circ}-\pi \mathrm{rad}$[/tex]

[tex]$6^{\circ}-\theta \mathrm{rad}$[/tex]

Then

[tex]$\theta=\frac{6}{180} \cdot \pi=\frac{\pi}{30}$$[/tex]

The arc length s cut off by a central angle of 6 degrees

[tex]$s=9 f t\left(\frac{\pi}{30}\right)=\frac{3 \pi}{10} \mathrm{ft}$$[/tex]

[tex]$s=\frac{3 \pi}{10} f t$[/tex].

Therefore, the arc length s cut off by a central angle of 6 degrees is

[tex]$s=\frac{3 \pi}{10} f t$[/tex].

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The measure of a road’s slope is called the grade. The grade of a road is measured in a percentage, for how many vertical feet the road rises or declines over 100 feet. For example, a road with a grade incline of 5% means that for every 100 horizontal feet the road rises 5 vertical feet. Which of the following is the slope of a road with a grade decline of 8%? Select one: A. −252 B. 225 C. −225 D. 252

Answers

[tex]\bf \underset{\stackrel{\textit{declining}}{\textit{so it's negative}}}{\stackrel{\textit{grade of 8\%}}{-\cfrac{8}{100}}}\implies \stackrel{\textit{slope}}{-\cfrac{\stackrel{rise}{8}}{\stackrel{run}{100}}}\implies -\cfrac{2}{25}[/tex]

What is the domain of the set {(-3,5),(2,0),(7,-5)}?

Answers

D{-3,2,7} hope this helps!

D{-3,2,7} is the domain of the set {(-3,5),(2,0),(7,-5)}

What is domain ?

The range of values that we are permitted to enter into our function is known as the domain of a function. The x values for a function like f make up this set (x). A function's range is the collection of values it can take as input. After we enter an x value, the function outputs this sequence of values.

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write an equation of the line through each pair of points in slope-intercept form.
1. (0,-1) (4,4)
2. (4,3) (1,-6)​

Answers

Answer:

1. F(x) = 5/4 x - 1

2. F(x) = 3x - 9

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

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

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

(1)

let (x₁, y₁ ) = (0, - 1) and (x₂, y₂ ) = (4, 4), then

m = [tex]\frac{4+1}{4-0}[/tex] = [tex]\frac{5}{4}[/tex]

Note the line crosses the y- axis at (0, - 1) ⇒ c = - 1

y = [tex]\frac{5}{4}[/tex] x - 1 ← in slope- intercept form

(2)

let (x₁, y₁ ) = (4, 3) and (x₂, y₂ ) = (1, - 6), then

m = [tex]\frac{-6-3}{1-4}[/tex] = [tex]\frac{-9}{-3}[/tex] = 3, hence

y = 3x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (4, 3), then

3 = 12 + c ⇒ c = 3 - 12 = - 9

y = 3x - 9 ← in slope- intercept form

A piano, which normally sells for $800, is marked
down to $700. What is the percent of markdown?
A) 100%
B) 87.5%
C) 50%
D) 12.5%

Answers

Answer

700 is 87.5% of 800

Step-by-step explanation:

According to this diagram what is cos 16

Answers

Answer:

Option: B is the correct answer.

         B)    [tex]\dfrac{24}{25}[/tex]

Step-by-step explanation:

We know that the cosine trignometric ratio corresponding to a angle theta(θ) is defined as the ratio of the adjacent side to the angle theta to the hypotenuse of the triangle containing θ as one of the angle.

By looking at the figure we observe that the triangle is a right angled triangle and the length of the side adjacent to angle 16° is: 24 and the hypotenuse of the triangle is: 25.

Hence, we get:

[tex]\cos 16=\dfrac{24}{25}[/tex]

According to the given figure, the value of Cos 16° = 24/25.

Hence the correct option is B.

Given that a right triangle with hypotenuse 25, base 24 and the perpendicular is 7 units.

We need to find the value of Cos16°.

To find the value of cos(16°) in the given right triangle, we can use the trigonometric ratio for cosine:

cos(θ) = adjacent side / hypotenuse

In this case, θ = 16°, and we know the adjacent side is the base of the right triangle, which is 24 units, and the hypotenuse is 25 units.

Now, plug the values into the formula:

cos(16°) = 24 / 25

Hence the value of Cos(16°) = 24 / 25

Hence the correct option is B.

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What is the solution to this equation?
x-8=15
A. X=13 B.X=17 C. X=7 D. X=23

Answers

x-8= 15

x-8+8=15+8

x= 23

Check answer by using substitution method

x-8= 15

23-8= 15

15= 15

Answer is X= 23 (D.)

X-8=15
The answer is D. X=23



Write an equation of the line that is parallel to -x + y = 5 and passes through the point (2,-5).

Answers

Remember that the slope intercept formula is:

y = mx + b

m is the slope

b is the y-intercept

so convert the equation -x + y = 5 into slope intercept form by adding x to both sides

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

0 + y = 5 + x

y = 5 + x

To match the slope intercept formula switch the x and 5 around

y = x + 5

If lines are parallel then they have the same slope (m) but they have different b

This means that the slope of the line will be 1 (in front of the x is an invisible 1 which would be m)

This is what we have so far...

y =  x + b

Now we must find b

To do that you must plug in the point the line goes through in the x and y of the equation.

(2, -5)

-5 = 1(2) + b

-5 = 2 + b

-7 = b

y = x + (-7)

y = x - 7

Hope this helped!

~Just a girl in love with Shawn Mendes

USE y=mx+b

m=Slope

b= Y-intercept

So y=x-7

Evaluate: log1664
a. 1/3
b. 2/3
c. 3/2​

Answers

log₁₆64 is3/2

What is logarithm?

The logarithm is exponentiation's opposite function in mathematics. This indicates that the exponent to which a fixed number, base b, must be raised in order to create a specific number x, is represented by the logarithm of that number.

Given

log₁₆(64) = x

16ˣ=64

(2⁴)ˣ=2⁶

2⁴ˣ=2⁶

4x=6

x=3/2

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The log₁₆64 exists 3/2. Therefore, the correct answer is option c.3/2.

What is a logarithm?

The logarithm exists as exponentiation's opposite function in mathematics. This signifies that the exponent to which a fixed number, base b, must be presented to make a specific number x, exists characterized by the logarithm of that number.

Given:

log₁₆(64) = x

16ˣ = 64

Simplifying the above equation, we get

(2⁴)ˣ = 2⁶

2⁴ˣ = 2⁶

4x = 6

x = 3/2

log₁₆(64) = 3/2.

Therefore, the correct answer is option c.3/2.

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Express cos(27pi/8) as a trigonometric function of an angle in Quadrant I.

Answers

Answer:

The equivalent trigonometric ratio in Quadrant I is [tex]-\cos (\frac{3\pi}{8})[/tex]

Step-by-step explanation:

The terminal side of [tex]\frac{27\pi}{8}[/tex] is in the 3rd quadrant.

The principal angle is [tex]\frac{3\pi}{8}[/tex]

In other words, the terminal side of [tex]\frac{27\pi}{8}[/tex]  makes an acute angle of [tex]\frac{3\pi}{8}[/tex] radian with the positive x-axis. Acute angles are in the first quadrant.

Since the cosine ratio is negative in the 3rd quadrant,

[tex]\cos (\frac{27\pi}{8})=-\cos (\frac{3\pi}{8})[/tex]

Answer:

c on edgen

Step-by-step explanation:

Solve by taking the square root of both sides 4(x-4)^2-180=0

Answers

Answer:

x = 4 ± 3[tex]\sqrt{5}[/tex]

Step-by-step explanation:

Given

4(x - 4)² - 180 = 0 ( add 180 to both sides )

4(x - 4)² = 180 ( divide both sides by 4 )

(x - 4)² = 45 ( take the square root of both sides )

x - 4 = ± [tex]\sqrt{45}[/tex] = ± 3[tex]\sqrt{5}[/tex]

Add 4 to both sides

x = 4 ± 3[tex]\sqrt{5}[/tex]

The value of x is equal to [tex]4 +3\sqrt{5}[/tex] and [tex]4 -3\sqrt{5}[/tex] by solving the quadratic equation that is taking the square root of both sides and also by using the concept of transposition.

Given the quadratic equation [tex]4(x-4)^2-180=0[/tex] by taking the square root of both sides

To solve a quadratic equation [tex]4(x-4)^2-180=0[/tex] by taking the square root of both sides, follow steps:

Step 1: Consider the given quadratic equation:

[tex]4(x-4)^2-180=0[/tex]

Add by  18  on both sides, gives;

[tex]4(x-4)^2-180+180=0+180[/tex]

On operating algebra sum results:

[tex]4(x-4)^2=180[/tex]

Step 2: Isolate the LHS [tex]4(x-4)^2[/tex]  from number 4 by dividing both sides by 4 yields:

[tex]\frac{4(x-4)^2}{4} =\frac{180}{4}[/tex]

On cancelation of 4 on LHS and divide 180 by 4 on RHS results in :

[tex](x-4)^2=45[/tex]

Factorize RHS with a perfect square 9 :

[tex](x-4)^2=9\times5[/tex]

Step 3: Taking the square root of both sides results :

[tex]\sqrt{(x-4)^2} = \sqrt{9\times5}[/tex]

On taking square roots results:

[tex](x-4) = \pm3\sqrt{5}[/tex]

Add by 4 on both sides, gives:

[tex]x=4 \pm3\sqrt{5}[/tex]

Therefore, the value of x is equal to [tex]4 +3\sqrt{5}[/tex] and [tex]4 -3\sqrt{5}[/tex] by solving the quadratic equation that is taking the square root of both sides and also by using the concept of transposition.

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Two certificates of deposit pay interest that differ by 3%. Money invested for one year in the first CD earns $240 interest. The same principal invested in the other CD earns $360. Find the two rates of interest. Smaller value and Larger value (%)

Answers

a = interest rate of first CD

b = interest rate of second CD

and again, let's say the principal invested in each is $X.

[tex]\bf a-b=3\qquad \implies \qquad \boxed{b}=3+a~\hfill \begin{cases} \left( \frac{a}{100} \right)X=240\\\\ \left( \frac{b}{100} \right)X=360 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \left( \cfrac{a}{100} \right)X=240\implies X=\cfrac{240}{~~\frac{a}{100}~~}\implies X=\cfrac{24000}{a} \\\\\\ \left( \cfrac{b}{100} \right)X=360\implies X=\cfrac{360}{~~\frac{b}{100}~~}\implies X=\cfrac{36000}{b} \\\\[-0.35em] ~\dotfill\\\\[/tex]

[tex]\bf X=X\qquad thus\qquad \implies \cfrac{24000}{a}=\cfrac{36000}{b}\implies \cfrac{24000}{a}=\cfrac{36000}{\boxed{3+a}} \\\\\\ (3+a)24000=36000a\implies \cfrac{3+a}{a}=\cfrac{36000}{24000}\implies \cfrac{3-a}{a}=\cfrac{3}{2} \\\\\\ 6-2a=3a\implies 6=5a\implies \cfrac{6}{5}=a\implies 1\frac{1}{5}=a\implies \blacktriangleright 1.2 = x\blacktriangleleft[/tex]

[tex]\bf \stackrel{\textit{since we know that}}{b=3+a}\implies b=3+\cfrac{6}{5}\implies b=\cfrac{21}{5}\implies b=4\frac{1}{5}\implies \blacktriangleright b=4.2 \blacktriangleleft[/tex]

A car rental company charges $29 per day to rent a car and $13.95 a day for GPS. Customers are charged for their full tank
of gas at $3.80 per gallon.
a) A car has a 12-gallon tank and a GPS. Write a rule for the total bill b as a function of the number of days d the car is
rented.
b) What is the bill for a 9-day rental?

Answers

Answer:

A) b= 29(d)+13.95(d)+3.80(12)

B) $432.15

Step-by-step explanation:

29(9)= 261

13.95(9)= 125.55

3.80(12)= 45.60

$261+$125.55+$45.60=$432.15

Given the equation y − 4 = three fourths(x + 8) in point-slope form, identify the equation of the same line in standard form.

Answers

Answer:

3x - 4y = -40

Step-by-step explanation:

The standard form of an equation of a line:

[tex]Ax+By=C[/tex]

We have the equation of the line in the point-slope form:

[tex]y-4=\dfrac{3}{4}(x+8)[/tex]

Convert it to the standard form:

[tex]y-4=\dfrac{3}{4}(x+8)[/tex]        multiply both sides by 4

[tex]4y-16=3(x+8)[/tex]          use the distributive property

[tex]4y-16=3x+24[/tex]           add 16 to both sides

[tex]4y=3x+40[/tex]         subtract 3x from both sides

[tex]-3x+4y=40[/tex]        change the signs

[tex]3x-4y=-40[/tex]

Maria earned $450 in 5 days. What was her average earning per day?

Answers

It’s 90 a per day for 5 days

Hello There!

We know that Maria earned $450 in a total of 5 days so we need to find out how much money she earns in just 1 day.

To find this, we just divide 450 “the amount of money Maria earns in 5 days” by 5 “number of days it takes for Maria to earn $450”

“450 ÷ 5 ≈ 90”

Maria earns around $90 in just 1 day.

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