investment after 20 years equals 130000. original investment was 50000. What was the interest rate?

Answer:

A) 20

Step-by-step explanation:

[tex] |(12 + 8) \div 2| \times 2 \\ |20 \div 2| \times 2 \\ 10 \times 2 \\ 20[/tex]

Answer:

There are a few ways to solve systems of equations.

If you are looking at a multiple choice question use the ordered pair to plug into the answer choices and whichever one balances out will be your answer. To assist you further I would need more information from the problem.

Step-by-step explanation:

hope it will help you have a great day bye and Mark brainlist if the answer is correct

[tex]kai6417[/tex]

#carry on learning

Answer:

the middle one

Step-by-step explanation:

y/x

and so 6/8 = y/16

Answer:

[tex]f(1) = 4[/tex]

Step-by-step explanation:

Solve:

-Chetan K

Answer:

1330

Step-by-step explanation:

Answer:

380

Step-by-step explanation:

40 percent of the amount invested is 380(Profit)

0.4 * 950 =380

Answer:

4. A rectangle is a square

Step-by-step explanation:

A rectangle can be a square, but not always. A rectangle has 2 pairs of parallel sides, 2 pairs of congruent sides, and 4 right angles. Squares have 2 pairs of parallel sides, 4 congruent sides, and 4 right angles. So, the difference between the two is that adjacent sides are not necessarily congruent in rectangles, but they are in squares. This means that some rectangles can be a square. If a rectangle has all congruent sides, then it is a square. On the other hand, some rectangles do not have all congruent sides, and thus are not squares.

Answer:

sorry for being late, here is the answers :)!

Answer:

2y-6=x >>> Y= 1/2x+3

-x+(1/2)y=3 >>> Y=2x+6

2x+y=3 >>> Y=-2x+3

x-3y=-6 >>> Y=(1/3)x+2

Step-by-step explanation:

Hope this helps! :)

Answer:

2^18

Step-by-step explanation:

Every true or false question can be either answered true / false (2 options)
So, there are 2.2.2.2.2... (2^18) ways to answer if a student answers every question.

Answer:

  x ≈ 34.9

Step-by-step explanation:

x is the hypotenuse of the triangle, for which one leg is given. Either the sine or the cosine relation can be used. We choose to use the cosine relation:

  Cos = Adjacent/Hypotenuse

  cos(53°) = 21/x

  x = 21/cos(53°) ≈ 34.9

Answer:

it is 5 I belive

Step-by-step explanation:

Answer: B

Step-by-step explanation:

Answer:

$752.69 + 12.5%=$753+$50=$803+ 3.35%=803.0335=

answer: c. $818.

Step-by-step explanation:

Answer:

⬇️ i got 100% on the test

Leo should buy the shoes from the store Z, as store Z has the best selling price of $28. Statement 2 is true.

Percentage of a number is the part of the number expressed in the in every hundred. Percentage of a number is expressed with the symbol '%'.

Leo wants to buy some shoes. He found the shoes at three different stores for a price of $35.

The final price of store X-

As store X is offering 15% off the price of the shoes and the price of shoes is $35. Thus the selling price of store X is,

[tex]P_x=35-35\times\dfrac{15}{100}\\P_x=35-5.25\\P_x=29.75[/tex]

As store Y is offering $5 off the price of the shoes and the price of shoes is $35. Thus the selling price of store Y is,

[tex]P_y=35-35\times\dfrac{5}{100}\\P_y=35-1.75\\P_y=23.25[/tex]

As store Z is offering a 1/5 discount off the price of the shoes and the price of shoes is $35. Thus the selling price of store Z is,

[tex]P_y=35-35\times\dfrac{1}{5}\\P_y=35-7\\P_y=28[/tex]

Thus, Leo should buy the shoes from the store Z, as store Z has the best selling price of $28. Statement 2 is true.

Learn more about the percentage here;

https://brainly.com/question/24304697

Answer:

2n³ - 3n² - 7n + 3

Step-by-step explanation:

Hi there! Don't worry, polynomials seem hard but you will get them with practice.

I am going to show you 2 methods of multiplying polynomials. These methods are universal, or they work with any polynomial multiplication problem:

This is perhaps the most common method. You distribute 1 value to another or multiply each and every single term.

Let's solve it!

Now, we add up like terms. Like terms should have the same coefficient and should be raised to the same power.

There you have it! This is how you solve with The distributive Property Method.

This is the next universal method, Area modeling.

Area models can be set up by the number of terms we have. In the first polynomial we have three terms:

Just for this method, keeping the positive signs helps.

For the binomial, we have two terms (hence, binomial)

We set up our are model like this, with the terms laid out as side lengths of a rectangle.  (Attachment "A")

Next, we find the area of each individual tile.  (Attachment "B")

Now, we add like terms. Something nice about area models is that most of the time, the like terms are matched up in a diagonal.  (Attachment "C")

We end up with the same answer as before.

-Chetan K

[tex]\text{By the Pythagorean Theorem}\\c^2=6^2+8^2\\c^2=36+64\\c^2=100\\c=\sqrt{100} \\c=10[/tex]

[tex] \text{Given a,b,c and d are in GP}[/tex]

[tex] \therefore \frac{b}{a} = \frac{ c}{b} = \frac{d}{c} = r \\ \\ \implies b = ar ,c = br,d = cr \implies \: b = ar,c = (ar)r,d = (br)r \\ \\ \implies b = ar,c = a {r}^{2} ,d = {br}^{2} \implies b = ar,c = {ar}^{2} ,d = (ar)r {}^{2} = a {r}^{3} ...(i)[/tex]

[tex] \text{Now, Consider}[/tex]

[tex]( {a}^{2} + {b}^{2} + {c}^{2} )( {b}^{2} + {c}^{2} + {d}^{2} ) = ( {a}^{2} + {a}^{2} {r}^{2} + ( {a}^{2} {r}^{4} )( {a}^{2} {r}^{2} + {a}^{2} r {}^{2} + {a}^{2} {r}^{4} + {a}^{2} {r}^{6} )[/tex]

[tex] = {a}^{2} (1 + {r}^{2} + {r}^{4} ) {a}^{2} {r}^{2} (1 + {r}^{2} + {r}^{4} ) = a {}^{4} {r}^{2} (1 + {r}^{2} + {r}^{4} ) {}^{2} = [a {}^{2}r(1 + {r}^{2} + {r}^{4}) ] {}^{2} [/tex]

[tex] = ( {a}^{2} r + {a}^{2} {r}^{3} + {a}^{2} r {}^{5} ) {}^{2} = (a. \: ar + ar. \: a {r}^{2} + a {r}^{2} .a {r}^{3} ) {}^{2} [/tex]

[tex] = (ab + bc + cd) {}^{2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \text{[From Equation (i)]}[/tex]

Hope This Helps!!! :)

The given polynomial can be rewritten as factors of the common ratio of

the geometric progression.

Response:

If a, b, c, d are in GP, (a² + b² + c²) × (b² + c² + d²) = [tex]\underline{(a\cdot b + b \cdot c + c\cdot d)^2}[/tex]

The assumed parameters are;

a, b, c, and d for a geometric sequence

Therefore;

[tex]\mathbf{\dfrac{b}{a}} = \dfrac{c}{b} = \dfrac{d}{c} = r[/tex]

Which gives;

b = a·r

c = b·r

d = c·r

Therefore;

c = b·r = a·r²

d = c·r = a·r³

(a² + b² + c²) × (b² + c² + d²) = (a² + (a·r)² + (a·r²)²) × ((a·r)² + (a·r²)² + (a·r³)²)

(a² + a²·r² + a²·r⁴) × ((a²·r²) + (a²·r⁴) + a²·r⁶) = a⁴·r²·(r⁸ + 2·r⁶ + 3·r⁴ + 2·r² + 1)

Which gives;

a⁴·r²·(r⁸ + 2·r⁶ + 3·r⁴ + 2·r² + 1) = a²·r·(r⁴ + r² + 1) × a²·r·(r⁴ + r² + 1)

a²·r·(r⁴ + r² + 1) × a²·r·(r⁴ + r² + 1) = (a²·r·(r⁴ + r² + 1))²

a²·r·(r⁴ + r² + 1) = a²·r⁵ + a²·r³ + a²·r

a²·r = a·b

a²·r³ = b·c

a²·r⁵ = c·d

Therefore;

a²·r⁵ + a²·r³ + a²·r = a·b + b·c + c·d

(a² + b² + c²) × (b² + c² + d²) = (a²·r·(r⁴ + r² + 1))² = [tex]\underline{(a\cdot b + b \cdot c + c\cdot d)^2}[/tex]

Learn more about geometric progression (GP.) here:

https://brainly.com/question/140530

Answer:

5 pounds

Step-by-step explanation:
$70 - $32.55 = 37.45
37.45 ÷ 7.49
= 5

Answer:

About 63,617 ft²

Step-by-step explanation:

[] The area of a circle is equal to πr²

π(225)² ≈ 159,043

[] To find 40%, we can multiply our whole by 40%

-> 40% divided by 100, 0.4, becomes a decimal

159,043 * 0.4 = 63,617

-> Don't forget to add on the units once you are done, this problem was done in feet, since it is an area we used feet squared

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

Given radius: [tex]3x^9 y^{11}[/tex]

Formula for area: πr²

Area of circle:

( [tex]\pi 3x^9 y^{11}[/tex] )²

[tex]\pi 3^2x^{9*2 }y^{11*2}[/tex]

[tex]9\pi x^{18}y^{22}[/tex]

Answer: [tex]9\pi x^{18}y^{22}[/tex]

Formula for area: [tex]\pi {r}^{2} [/tex]

Area of circle:

[tex](\pi3 {x}^{9} {y}^{11} {)}^{2} [/tex]

[tex]\pi {3}^{2} {x}^{9}{ \times }^{2} {y}^{11} { \times }^{2} [/tex]

[tex]9\pi {x}^{18} {y}^{22} [/tex]

Answer:

[tex]\mathsf{height}=x^2+x-9[/tex]

Step-by-step explanation:

Volume of a cuboid = L x w x h

(where L is the length, w is the width and h is the height)

[tex]\implies \mathsf{height=\frac{volume}{width \times length} }[/tex]

Given:

[tex]\mathsf{volume}=3x^4-3x^3-33x^2+54x[/tex]

[tex]\mathsf{width}=x-2[/tex]

[tex]\mathsf{length}=3x[/tex]

[tex]\implies \mathsf{height}=\frac{3x^4-3x^3-33x^2+54x}{3x(x-2)}[/tex]

Factor expression for volume

Factor out common term [tex]3x[/tex]:  [tex]3x(x^3-x^2-11x+18)[/tex]

Factor [tex]x^3-x^2-11x+18[/tex]:  [tex]3x(x-2)(x^2+x-9)[/tex]

[tex]\implies \mathsf{height}=\frac{3x(x-2)(x^2+x-9)}{3x(x-2)}[/tex]

Cancel the common factors [tex]3x(x-2)[/tex]:  

[tex]\implies \mathsf{height}=x^2+x-9[/tex]

Answer:

Reduction

Step-by-step explanation:

In this problem, there are 2 triangles: the solid lines represent the preimage and the dotted lines represent the image. All of the vertices of the dotted lines are inside the solid line. This means that the preimage is larger than the image. If the preimage is larger, then a reduction has occurred.

There are 2 ways to tell that this is a reduction. The simplest is to just say that the image is inside the preimage and therefore smaller. More mathematically, you could also see that all of the coordinate pairs are closer to the origin by a scale factor of 2/3. Thus, the triangle must be smaller and reduced.

Answer:

[tex]\large\boxed{\textsf{ t = 484.}}[/tex]

Step-by-step explanation:

[tex]\textsf{We are asked to solve for the value of t. We should first begin with a review of}[/tex]

[tex]\textsf{what the \underline{Properties of Equality} are.}[/tex]

[tex]\large\underline{\textsf{What are Properties of Equality?}}[/tex]

[tex]\textsf{Properties of Equality are properties that allows us to manipulate an equation}[/tex]

[tex]\textsf{stating whenever a constant is added, removed, squared, square rooted... then}[/tex]

[tex]\textsf{both expressions will still show equality to each other.}[/tex]

[tex]\underline{\textsf{Example;}}[/tex]

[tex]\textsf{The Addition Property of Equality. This Property states that whenever a constant,}[/tex]

[tex]\textsf{or the same term is added to both sides of an equation, the equation remains}[/tex]

[tex]\textsf{equal. Say we were given this equation;}[/tex]

[tex]\tt a - 7 = 9[/tex]

[tex]\textsf{We would use the Addition Property of Equality to isolate a.}[/tex]

[tex]\textsf{This is done by adding 7 to both sides of the equation.}[/tex]

[tex]\tt a \ -\not{7} + \not{7} = 9 + 7[/tex]

[tex]\boxed{\tt a=16.}[/tex]

[tex]\large\underline{\textsf{For Our Problem;}}[/tex]

[tex]\textsf{We should use the Multiplication Property of Equality, which states that whenever}[/tex]

[tex]\textsf{both sides of the equation are multiplied by a constant, then they are still equal.}[/tex]

[tex]\textsf{Let's use the Multiplication Property of Equality to multiply both sides of the}[/tex]

[tex]\textsf{equation by 11 in order to remove the fraction.}[/tex]

[tex]\tt \frac{\not{11} \times t}{\not{11}} = 44 \times 11[/tex]

[tex]\underline{\textsf{We are left with our final answer;}}[/tex]

[tex]\large\boxed{\textsf{ t = 484.}}[/tex]

Answer:

t = 484

Step-by-step explanation:

[tex]\frac{44}{1} = \frac{t}{11}[/tex]

[tex]44*11 = 484[/tex]

Hence,  t = 484

[RevyBreeze]

Answer:

The lake frontage of lot A is 50.9yd

The lake frontage of lot B is 58.4yd

The lake frontage of lot C is 64.7yd

d) The prices of the other lots, from least to greatest, are  286,836.94 and  317,779.96

Step-by-step explanation:

Answer:

MY ANSWER IS THIS. IS. A. QUIZ.

Step-by-step explanation:

The cost of the apples is a function of their weight is true about the functional relationship shown in the graph. Correct option is c.

In the graph, the horizontal axis represents the weight (in pounds) of the apples, and the vertical axis represents the cost (in dollars) of the apples. As the weight of the apples increases, the cost also increases. This relationship shows that the cost of the apples is dependent on their weight, making it a functional relationship of "cost as a function of weight."

To know more about functional relationship:

https://brainly.com/question/29206785

#SPJ2

Answer:

[tex] \frac{12 + x}{4(x + 3)} [/tex]

Step-by-step explanation:

hopes this helps

pls mark me brainest

Answer:
its B.

Step-by-step explanation: just take half off the numbers, and then you have your answer. simple.

Answer:

A) [tex]14.9[/tex]

Step-by-step explanation:

[tex]0.3r-4.9\\\\0.3(66)-4.9\\\\19.8-4.9\\\\14.9[/tex]

Answer:

14.9

Step-by-step explanation:

It's simple. Just replace the r with 66.

Answer:

12.5%

Step-by-step explanation:

105 is what percent of 120?

you can use this proportion:

if/of = %/100

in this problem:

is = 105

of = 120

'what percent' = p/100

105/120 = p/100

cross-multiply to get:

120p = 10500

p = 10500/120

p = 87.5

So the electrician used 87.5%, out of 100%, meaning 12.5% went unused

Answer:

The percent of the wire that went unused was 15%.

Step-by-step explanation:

You can set up these equations:

Turn 15% into 0.15

12.5% into 0.125

8.75% into 0.0875

7% into 0.70

Now, the number of wire unused is 15. Since 120 - 105 = 15. So, we can set up these equations to see which percentage it was that got unused:

0.15 x 120 = 18

0.125 x 120 = 15

0.0875 x 120 = 10.5

0.70 x 120 = 84

So, the answer is 15%.