You buy a new computer for $1200. The value y (in dollars) of the computer decreases by 35% each vear.
7) Write an exponential decay model that represents the value of the computer.
8) Use the model from #7 to estimate the value after 3 years.

The scale factor of the rectangle and its copy is [tex]\frac{2}{3}[/tex].

The ratio of the scale of an original thing to a new object that is a representation of it but of a different size is known as a scale factor (bigger or smaller).

The rectangle on right hand side is the scaled copy of the original rectangle. The scaled version of the rectangle is given as follows:

[tex]\frac{42}{63} \text{ and } \frac{15}{\frac{45}{2} } = \frac{30}{45}[/tex]

Rationalize the factors to find the scale factor.

Rationalize the factor [tex]\frac{42}{63}[/tex] by multiplying and dividing by 45.

[tex]\frac{(42)(45)}{(63)(45)}[/tex]

[tex]\frac{1890}{2835}[/tex]

Rationalize [tex]\frac{30}{45}[/tex] by multiplying and dividing by 63.

[tex]\frac{(30)(63)}{(45)(63)}[/tex]

[tex]\frac{1890}{2835}[/tex]

Scale factor = [tex]\frac{1890}{2835} = \frac{2}{3}[/tex]

Hence the scale factor of the rectangle and its copy is [tex]\frac{2}{3}[/tex].

Learn more about scale factor here:

https://brainly.com/question/21332948

#SPJ1

Answer:

30=(12-c)5

30=60-5c multiply 12 and c by 5

-30=-5c Subtract 60 from 30

-30 ÷ -5= c divide -30 by -5

c=6

On simplifying the values obtained for the fractions are - 3 / 3/4= 4, 5 / 3/4= 6.66, 8 / 4/7= 14, 6 / 3/5= 10, 2 / 5/8= 3.2 and 4 / 8/9= 4.5.

What is fraction?

In mathematics, a fraction is represented by a number that identifies a portion of a whole. A fraction is a component or section taken from a whole, which can be any number, a certain amount, or an object.

The first fraction is 3/(3/4).

The denominator will reciprocate.

Simplify, the fraction -

3 × 4/3 = 4

The second fraction is 5/(3/4).

The denominator will reciprocate.

Simplify, the fraction -

5 × 4/3

20/3 = 6.66

The third fraction is 8/(4/7).

The denominator will reciprocate.

Simplify, the fraction -

8 × 7/4 = 14

The fourth fraction is 6/(3/5).

The denominator will reciprocate.

Simplify, the fraction -

6 × 5/3 = 10

The fifth fraction is 2/(5/8).

The denominator will reciprocate.

Simplify, the fraction -

2 × 8/5

16/5 = 3.2

The sixth fraction is 4/(8/9).

The denominator will reciprocate.

Simplify, the fraction -

4 × 9/8

9/2 = 4.5

Therefore, the values of fractions are 4, 6.66, 14, 10, 3.2 and 4.5.

To learn more about fractions from the given link

https://brainly.com/question/17220365

#SPJ1

Answer:

10c-4+11d Welcome :D

Step-by-step explanation:

540 yards should be purchased to enclose the deck and option B is correct.

A rectangle in Euclidean plane geometry is a quadrilateral with four right angles. You might also describe it as follows: a quadrilateral that is equiangular, which indicates that all of its angles are equal. The parallelogram might also have a straight angle. Squares are rectangles with four equally sized sides.

A quadrilateral of the shape of a rectangle has four 90-degree vertices and equal parallel sides. As a result, it is sometimes referred to as an equirectangular rectangle. Because its opposite sides are equal and parallel, a rectangle is also known as a parallelogram.

Pools dimension = 1:3

Length = 60 × 3

= 180

Breadth= 30 × 4

= 90

Perimeter of rectangle = 2(l+b) = 2(90+180)

P = 2(270) = 540 yards

Thus, 540 yards should be purchased to enclose the deck and option B is correct

To know more about rectangle visit:

brainly.com/question/29123947

#SPJ1

The solution for the given decimal multiplication is 0.025.

To multiply two decimal numbers, first multiply the values without the decimal points.

The digits in the factors that follow the decimal point should now be added together.

Following that, the dot should be placed in the product so that it has the same number of digits as the total number of factors.

If there are more decimal places than digits in the number, place zeroes immediately after the dot.

If there are more decimal places present compared to digits in the product, fill the decimal places with zeroes immediately after the dot.

For the given question, multiply -5 * -5 = 25

Now the total digits after the decimal point in factors are 3.

But there are only 2 digits in 25.

So fill the decimal place with a zero.

Therefore the product of given decimal numbers is 0.025.

To learn more about decimal numbers, follow the link.

brainly.com/question/28393353

#SPJ1

the area of the green parallelogram will be 15inch².

What is Area of Parallelogram?

The region in a two-dimensional plane that a parallelogram occupies is known as its area. A parallelogram is a form with four sides with two geometry dimensions. Because the opposing sides are equal and parallel, so it is a unique quadrilateral example. The space bounded by the four sides of a parallelogram is known as its area. A parallelogram's area is calculated as the sum of its length and height.

A blue parallelogram has a height of 6 inches and a base of 10 inches.

a scale of 2:1 was applied to the blue parallelogram to create a green parallelogram.

So the height will be half and the base ill also be.

For the green parallelogram will be 3 inch and 5 inch.

The area will be 3*5 = 15inch²

Hence, the area of the green parallelogram will be 15inch².

Learn more about Area of Parallelogram, by the following link.

https://brainly.com/question/24291122

#SPJ1

1. The number shows the video game sold in 1986at $180.

2.  The function f(x) = 3x² - 40x +180 which clearly resemble the standard vertex form.

3.  The vertex of the given parabola is, (h, k) = (6.667, 46.667)

In mathematics, a function is represented as a rule that produces a distinct result for each input x. In mathematics, a function is indicated by a mapping or transformation.  The collection of all the values that the function may input while it is defined is known as the domain. The entire set of values that the function's output can produce is referred to as the range. The set of values that could be a function's outputs is known as the co-domain.

Given:

f(x) = 3x² - 40x +180

1. For f(0) put x= 0 we get

f(0) = 3(0)² - 40(0) +180

f(0) = 180

So, the number shows the video game sold in 1986 at $180.

2.  We know that the standard form of the parabola is y=ax²+bx+c.

Also we have  f(x) = 3x² - 40x +180 which clearly resemble the standard vertex form.

3.  Comparing the given equation with y = ax² + bx + c, we have

a = 3, b = -40, and c = 180.

So, x-coordinate is, h = -b/2a = - (-40)/ 2(3)

h= 40/6 = 6.667  

and, y-coordinate is, k = 3(6.667)² - 40(6.667) +180 = 46.667.

So, The vertex of the given parabola is, (h, k) = (6.667, 46.667)

Learn more about function here:

https://brainly.com/question/12431044

#SPJ1

The ratio for 5 / 15 based on the information is 1:3. The value of x is 1.

Ratio in Mathematics simply demonstrates how many times one number can be able to fit into another number. It should be noted that ratios contrast two numbers by dividing them. In this case, A/B will be the formula if one is comparing one variable (A) to another variable (B).

This simply indicates that you're dividing the variable A by B. Let us say for instance, the ratio will be 3/10 if A is 3 and B is 10.

The ratio for 5 / 15 will be:

= 5 / 15

= 1 / 3

= 1:3

Learn more about ratio on:

brainly.com/question/2328454

#SPJ1

Answer: y=(-5/3)x+8

Step-by-step explanation: earrange 5x+3y=6 in slope intercept form

y=mx=b

5x+3y=6

     3y=6-5x

       y=2-(5x)/3

then slope for a line parallel is -5/3

Use point slope form y-y1=m(x-x1)

plug un values of (x,y) = (6,-2)

and m=-5/3

y-y1=m(x-x1)

y-(-2)=(-5/3)(x-6)

y+2=(-5/3)x+10

y=(-5/3)x+10-2

y=(-5/3)x+8 <-- solution

By applying pythagorean theorem and perimeter formula, The answer is D 9+[tex]\sqrt{2}[/tex] +[tex]\sqrt{5}[/tex]

The Pythagorean theorem is a fundamental result in mathematics named after the ancient Greek mathematician Pythagoras. It states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

Perimeter is a measure of the distance around the outside of a two-dimensional shape. It is the sum of the lengths of all the sides of the shape. The formula for perimeter depends on the shape. For example, the perimeter of a rectangle is twice the sum of its length and width, while the perimeter of a circle is equal to its circumference.

To know more about perimeter visit:

https://brainly.com/question/6465134

#SPJ1

Ann should have switched the inequality symbol to not include 16 as a possible choice. The correct answer would be an option (C).

Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.

As per the question, we have been given that Ed's birthday is less than 16 days

away and that Ann writes the inequality

d ≤ 16, where d equals the number of days, to represent this.

Thus, He should have switched the inequality symbol to not include 16 as a possible choice.

Hence, the correct answer would be an option (C).

Learn more about inequalities here:

brainly.com/question/20383699

#SPJ1

Answer:

13009 is the best answer for this question

Answer:

x=-7/6, y=-8/3. (-7/6, -8/3).

Step-by-step explanation:

6x-3y=1

y=-2x-5

-------------

6x-3(-2x-5)=1

6x+6x+15=1

12x+15=1

12x=1-15

12x=-14

x=-14/12=-7/6

y=-2(-7/6)-5=7/3-5=7/3-15/3=-8/3

The equation in slope-intercept form of the line that passes through the point (0, -4) and has a slope of 5 is y = 5x - 4.

The form of a line's slope intercept is one of the most common ways to represent a line's equation. The slope intercept formula can be utilized to find a line's equation given its slope and y-intercept for a straight line ( the y-coordinate of the point where the line intersects the y-axis). For a line to exist, every point along the line must be satisfied by its equation. This straight line equation, which is represented as, can be resolved in a number of ways.

1. Slope-intercept form

2. Two-point form

3. Intercept form

4. Point slope form

To know more about slope intercept form visit:

https://brainly.com/question/29503162

#SPJ1

The radian measure of the central angle θ is 5.4 radians.

To learn more about The radian measure of the central angle refer to:

https://brainly.com/question/19758686

#SPJ1

y = (-4/11)x + 5.27 is the equation that passes through each pair of points (9,2) (-2,6).

A group of numbers and variables without an equal sign are known as a numerical expression. A set of numbers and variables with an equal sign is referred to as an equation.

Once you are familiar with these terms, you will realise that an equation is just two expressions joined by an equal sign. You can also write expressions, equations, and simplify equations.

To find an equation of the line that passes through each pair of points (9,2) (-2,6) we need to find slope and convert it to y-intercept form

Slope formula = y - y₁ = m(x - x₁)

Putting the values in the formula we get

2 - 6 = m(9 - (-2))

-4 = m(11)

m = -4/11

As we have found slope, we can find the slope intercept form i.e.

y - 2 = -4/11(x -9)

y = (-4/11)x + 3.27 + 2

y =  (-4/11)x + 5.27

Thus, y = (-4/11)x + 5.27 is the equation that passes through each pair of points (9,2) (-2,6)

Learn more about equations

https://brainly.com/question/29657983

#SPJ1

Answer:

D. 10/3x^2+3x

Step-by-step explanation:

The product of the two rational expressions is:

(2/x+1) * (5/3x)

Multiply the numerator of the first fraction by the numerator of the second fraction and the denominator of the first fraction by the denominator of the second fraction:

(2*5) / (x+1) * (3x)

Which simplifies to:

10 / (x^2 + x)

So the correct answer is:

D. 10/3x^2+3x

The following equations are equivalent:

2 + x = 5

x + 1 = 4

Negative 5 + x = negative 2

This is because, in each equation, x is the same variable, and it has the same value on both sides of the equation.

In the first equation, x is equal to 3.

In the second equation, x is equal to 3

In the third equation, x is equal to -3

Note that the equation 9 + x = 6 and x + (negative 4) = 7 are not equivalent as these equations have different values for x.

On solving the provided question, we can say that - by prime factorization the factors of 5 are 5 and 1

A number that divides another number by itself with no residual is known as a factor. In other words, if multiplying two whole numbers results in the creation of a product, the numbers we are multiplying are factors of the product since the product is divisible by them. Division and multiplication are the two ways to discover factors. A number or other mathematical object is factorized or factored in mathematics by expressing it as the product of numerous factors, often smaller or simpler things of the same sort. One factorization of the polynomial x2 - 4 is 3 5, which is also a factorization of the number 15.

The factors of 5 are -

5and 1

as 5 = 5 X 1

To know more about factors visit:

brainly.com/question/29128446

#SPJ1

Answer: m<5 = 142°

Step-by-step explanation:

The annual interest rate that yields $31 from $600 in 10 months is 6.2%

An interest is the amount earned by placing a sum of money in a savings account or in an investment.

The principal amount you put in the account, P = $600

The amount (interest) earned in 6 months, I = $31

The duration over which the interest of $31 is earned, T = 10 months

The annual interest rate is found as follows;

The annual interest rate is the interest rate per year

The number of months in a year = 12 months

The formula for the simple interest, I, is presented as follows;

I = P·R·T

Where;

I = The simple interest earned

P = The principal amount saved in the account

R = The annual interest rate

T = The time duration the amount was saved in years

12 months = 1 year

Therefore; 10 months = (1/12) × 10 year = (5/6) year

The time, T, of 10 months = (5/6) year

31 = 600 × R × (5/6)

R = 31/(600 × (5/6)) = 0.062

0.062 in percentage is 0.062 × 100 = 6.2%

The annual interest rate, R = 6.2%

Learn more about the simple interest on an amount here: https://brainly.com/question/16412634

#SPJ1

308 cubic yards of sand will be needed for 280 square yards of surface.

If 1.1 cubic yards of sand are needed for every 100 square yards of surface, we can find the amount of sand needed for 280 square yards of surface using the proportion:

1.1 cu yd / 100 sq yd = x cu yd / 280 sq yd

To find the value of x, we can cross-multiply and solve for x:

1.1 cu yd * 280 sq yd = x cu yd * 100 sq yd

x = 1.1 cu yd * 280 sq yd / 100 sq yd

x = 308 cu yd

So, 308 cubic yards of sand will be needed for 280 square yards of surface.

To know more about proportion visit: https://brainly.com/question/24232216

#SPJ1

Answer:

4,700,000 can be written as 4.7 × 10⁶ in scientific notation

For Example:

Here,

1200 can also be written as

12 × 100

we know that, 100 = 10²

so,

12 × 10²

Remember

1.2 × 10³

The number of miles Sallu car will travel with 16 gallons fuel capacity if he travelled 28 miles per gallon is 448 miles.

If Sallu car can travel 28 miles using 1 gallon of fuel;

then, Sallu car will travel x miles using 16 gallons of fuel.

Based on the given task content; we can solve the task using the concept of ratio.

A ratio is a number representing a comparison between two named things.

It also refers to the relative magnitudes of two quantities usually expressed as a quotient.

Equate the ratio of miles travelled to gallons of fuel used

28 miles : 1 gallon = x miles : 16 gallons

28/1 = x / 16

28 × 16 = x × 1

448 = x

Therefore, Sallu car will travel 448 miles using 16 gallons of fuel.

Read more on ratio:

https://brainly.com/question/2328454

#SPJ1

Answer: The interest rate is 0.16 or 16% ✅

Step-by-step explanation:

The interest rate is the percentage of the principal (the initial amount of money) that is paid as interest over a certain period of time. To find the interest rate in this scenario, we can use the formula:

Interest = Principal x Interest Rate x Time

In this case:

Interest = $12,800

Principal = $40,000

Time = 4 years

So we can set up the equation:

12800 = 40000 x Interest Rate x 4

To find the interest rate, we can divide both sides of the equation by 40000 x 4, which gives us:

12800 / (40000 x 4) = Interest Rate

We can simplify this fraction:

0.16 = Interest Rate

So the interest rate is 0.16 or 16%.

When Todd made $12,800 in interest by placing $40,000 in a savings account with simple interest for 4 years, the interest rate was 7.5%.

Simple interest is a formula for calculating the amount of interest that will be charged on a sum of money at a specific rate and during a specific time frame.

In contrast to compound interest, where the interest of one year's principal is added to the principal of the following year to calculate the interest, the principal sum in the case of simple interest stays the same.

Simple Interest = [tex]$ \frac{ \text P \times \text R \times \text T}{100}[/tex]

where,

P = Principal,

R = Rate of Interest in % per annum, and

T = Time, in years

Here given that,

Todd made $12,800 in interest, i.e. Simple Interest = 12,800

By placing $40,000 in a savings account, i.e. Principal = 40,000

with simple interest for 4 years, i.e. Time = 4 years

To find, interest rate

Substitute the data into the simple interest formula

[tex]$ \Rightarrow 12,800 = \frac{40,000 \times \text R \times 4}{100}[/tex]

[tex]$ \Rightarrow \text R = \frac{ 12,000 \times 100}{40,000 \times 4}[/tex]

[tex]$ \Rightarrow \text R = \frac{1,200,000}{160,000}[/tex]

⇒ R = 7.5%

Thus, the interest rate was 7.5%.

Learn more about Simple interest

https://brainly.com/question/25845758

The area of a rectangle is found by multiplying the length by the width.

To find the area of the base of Isabella's fort, we will use the following formula:

Area = length x width

We are given that the base of the fort is 78 inches wide and 92 inches long. So we can plug these values into the formula:

Area = 78 inches x 92 inches = 7176 square inches

Therefore, the area of the base of Isabella's fort is 7176 square inches.

Answer: Slower

Step-by-step explanation:

Speed is a measure of how quickly an object moves, and it is calculated as distance traveled divided by time. Since Jorge and Zahara's dad traveled the same amount of time but Jorge traveled a shorter distance, it can be inferred that Zahara's dad traveled at a faster speed.

Another way to understand this is that, if Jorge and Zahara's dad were driving at the same speed, they would have traveled the same distance in the same amount of time. However, since Jorge traveled a shorter distance than Zahara's dad, it can be inferred that Jorge was driving at a slower speed.

Answer:

Step-by-step explanation:

The equation of line segment AB, whose endpoints are A(x, y) = (2, 1) and B(x, y) = (1, - 1.5), is P(x, y) = (1 - k) · (2, 1) + k · (1, - 1.5), for 0 ≤ k ≤ 1.

In this problem we need to determine the equation that described the line segment AB, whose endpoints are points within other two line segments. The location of a point can be found by means of the following formula:

P''(x, y) = P(x, y) + k · [P'(x, y) - P(x, y)], 0 ≤ k ≤ 1

Where:

First, determine the locations of endpoints A and B:

A(x, y) = (- 2, 3) + 0.5 · [(6, - 1) - (- 2, 3)]

A(x, y) = (- 2, 3) + 0.5 · (8, - 4)

A(x, y) = (- 2, 3) + (4, - 2)

A(x, y) = (2, 1)

B(x, y) = (4, 3) + 0.75 · [(0, - 3) - (4, 3)]

B(x, y) = (4, 3) + 0.75 · (- 4, - 6)

B(x, y) = (4, 3) + (- 3, - 4.5)

B(x, y) = (1, - 1.5)

Second, derive the equation of line segment AB:

P(x, y) = A(x, y) + k · [B(x, y) - A(x, y)]

P(x, y) = (2, 1) + k · [(1, - 1.5) - (2, 1)]

P(x, y) = (1 - k) · (2, 1) + k · (1, - 1.5), for 0 ≤ k ≤ 1.

To learn more on line segment formula: https://brainly.com/question/30192340

#SPJ1