a rectangle has a length of 5 cm and a width of 3 cm. Every time I mention is double to form a second rectangle. What is the ratio of the perimeters of the two rectangles? please help :,)

Answer:

169.20

Step-by-step explanation:

If a discount of 6% is allowed then the cashprice will be (100-6)% of the marked price

0.94 x 180=169.2

After the discount marked price of 6% the cash price of radio will be equal to 169.2.

The Latin term "per centum," which signifies "by the hundredth," was the source of the English word "percentage." Segments with a denominator of 100 are considered percentages. In other terms, it is a relationship where the worth of the entire is always considered to be 100.

As per the given information in the question,

Marked price of radio = 180.00

Discount on price = 6%

Then,

180 × 6/100 = 10.8

So, the cash price of radio will be,

180 - 10.8

= 169.2.

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To earn an average score of 90, the score on the fourth test needs to be 98.

The core value of a set of data is expressed mathematically as the average of a list of data. It is defined mathematically as the ratio between the total number of units in the list and the sum of all the data. The term "mean" in statistics also refers to the average of a particular set of numerical data.

Given the score of the first three tests as:

91, 84, 87.

The average is given by the following formula:

Average = Sum of scores ÷ total number of tests

Let us suppose the score of fourth test as x.

Given that A = 90:

90 = (91 + 84 + 87 + x) ÷ 4

x = 98

Hence, the score on the fourth test must be equal to 98, to get an average score of 90.

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Answer:

A.Josiah

5×4= 20+100=120

10×4=40+40=80

120 is more than 80

After 4 weeks , Josiah has 40 dollars more in his savings account.

Given :

Josiah starts with $100 in his savings account and adds 5 per week.

Let x be the number of weeks they started saving

Total money in savings account = 5 (number of weeks) + initial amount

Total money = \(5x+100\)

Kiri starts with 40 in her savings account and adds 10 each week.

Total money = 10x+40

Now we need to find out how much money each have after 4 weeks

lets replace x by 4

Josiah have \(5(4)+100=120\)

Kiri have \(10(4)+40= 80\)

120-80=40

So , Josiah have 40 dollars more  in his savings account.

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Answer:  k=(1/5)

Step-by-step explanation:

The quotient when 6+8i is divided by 2i is given by -3i+4.

We know that, complex number \(i^1=-1\).

Given the divisor is = 2i and dividend is = 6+8i

Dividing the dividend by divisor we get,

(6+8i)/2i = 6/2i + 8i/2i = 3/i + 4 \(=\frac{3i}{i^2}+4\) = 3i/(-1)+4 = -3i+4

Hence the quotient is = -3i+4.

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Answer:

the volume of a sphere with a 9m radius is approximately 3053.63 cubic meters.

Step-by-step explanation:

The formula for the volume of a sphere is:

V = (4/3)πr^3

where r is the radius of the sphere and π is a constant approximately equal to 3.14.

Substituting the given radius of 9m into the formula, we get:

V = (4/3)π(9^3)

V = (4/3)π(729)

V = 3053.63 cubic meters (rounded to two decimal places)

Therefore, the volume of a sphere with a 9m radius is approximately 3053.63 cubic meters.

Answer:

An alternative definition for the acceleration ax that can be written in terms of \(v_x\) and \(\frac{dv_x}{dx}\) is \(a_x=v_x \frac{dv_x}{dx}\)

Step-by-step explanation:

We know that :

\(a_x=\frac{dv_x}{dt}\)

Now we are supposed to find an alternative definition for the acceleration ax that can be written in terms of \(v_x\) and \(\frac{dv_x}{dx}\)

So, We will use chain rule over here :

\(a_x=\frac{dv_x}{dt}\\a_x=\frac{dv_x}{dt} \times \frac{dx}{dx}\\a_x=\frac{dv_x}{dx} \times \frac{dx}{dt}\\a_x=\frac{dv_x}{dx} \times \frac{dx}{dt} [\frac{dx}{dt}=v_x]\\a_x=\frac{dv_x}{dx} \times v_x\\a_x=v_x\frac{dv_x}{dx}\)

Hence an alternative definition for the acceleration ax that can be written in terms of \(v_x\) and \(\frac{dv_x}{dx}\) is \(a_x=v_x \frac{dv_x}{dx}\)

The alternative definition for the acceleration ax that can be written in terms of vx and dx/ dx is \(a_x = v_x \frac{dv_x}{dx}\)

Here we used the chain rule:

It is the basic method for differentiating a composite function. Here the first factor on the right, Df(g(x)), represents that the derivative of f(x) is first found and then x, wherever it arises, is replaced by the function g(x).

So,

\(a_x = \frac{dv_x}{dt}\\\\ = \frac{dv_x}{dt} \times \frac{dx}{dx}\\\\= \frac{dv_x}{dx} \times \frac{dx}{dt}\\\\ = \frac{dv_x}{dx} \times \frac{dx}{dt} (\frac{dx}{dt} = v_x)\\\\ = \frac{dv_x}{dx} \times v_x\\\\= v_x\frac{dv_x}{dx}\)

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The solution of the equations 6x = 52 − 2y and 5x + 7y = 70 by elimination method will be (7, 5).

In other words, the collection of all feasible values for the parameters that satisfy the specified mathematical equation is the convenient storage of the bunch of equations.

The equations are given below.

6x = 52 - 2y

6x + 2y = 52

3x + y = 26                   ...1

5x + 7y = 70

(5/7)x + y = 10              ...2

Subtraction equation 2 from equation 1, then we have

3x - (5/7)x = 26 - 10

(16/7)x = 16

x = 7

Then the value of 'y' is given as,

3(7) + y = 26

21 + y = 26

y = 5

The solution of the equations 6x = 52 − 2y and 5x + 7y = 70 by elimination method will be (7, 5).

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The Reflexive Property is a property of equality that states that anything is equal to itself. This property is true for numbers, shapes, angles, and more.

In the context of geometry, the Reflexive Property of Congruence states that any geometric figure is congruent to itself. This includes angles, segments, triangles, and other polygons.

So, when you see "<J ≅ <J", it's saying that angle J is congruent to angle J, which is an application of the Reflexive Property. In other words, any angle is congruent (equal in measure) to itself.

Answer:

350 tickets

Step-by-step explanation:

643-57=586

586/2=293

293+57=350

345 adult tickets were sold by solving the equation for the given situation.

Let's say x is the number of adult tickets sold.

We know that there were 57 fewer student tickets sold than adult tickets, so the number of student tickets sold is x - 57.

We also know that the total number of tickets sold is 643, so we have the following equation:

x + x - 57 = 643

Combining like terms, we get:

2x - 57 = 643

Adding 57 to both sides, we get:

2x = 690

Dividing both sides by 2, we get:

x = 345

Therefore, 345 adult tickets were sold.

Here is a summary of the steps we took to solve the problem:

We defined variables to represent the number of adult and student tickets sold.

We wrote an equation that represented the given information.

We solved the equation for the number of adult tickets sold.

We checked our answer by substituting the value we found for the number of adult tickets into the original equation.

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Answer:

24 ways

Step-by-step explanation:

1) In Combinatorics when we arrange a number and the order matter, we call it arrange the possibilities. For this exercise let's not use formulas but reasoning.

2) For this case we need a two figure number. Since we have seven numbers.

Since there is no repetition, all the possibilities are:

\(7*6=42\)

3) But there is a restriction it's forbidden adjacent even and odd numbers: These numbers we don't want them:

13 15 17

24 26

31 35 37

42 46

51 53 57

62 66

71 73 75

18 non desirable results

The total arrangements minus the not possible combinations, will match the possible results:

\(42-18=24\)

3) Just for checking, we have here the allowed combinations:

12 14 16

21 23 25 27

32 34 36

41 43 45 47

52 54 56

61 63 65 67

72 74 76  

A total of 24 possible ways.

Answer: Parallelogram JKLM is shown on the coordinate plane below:

Parallelogram JKLM with ordered pairs at J negative 6, 2, at K negative 4, 6, at L negative 3, 3, at M negative 5, negative 1.

If parallelogram JKLM is rotated 270° clockwise around the origin, what are the coordinates of the endpoints of the side congruent to side JM in the image parallelogram?

J′(−2, −6); M′(1, −5)

J′(6, 2); M′(−5, 1)

J′(2, 6); M′(−1, 5)

J′(6, −2); M′(5, 1)

Step-by-step explanation:

Step-by-step explanation:

if there is no typo the expression is :

7 + 5c + 4d - 8c + d

to simplify combine all terms with the same variable and exponent of that variable.

so, this is

7 + (5c - 8c) + (4d + d) = 7 - 3c + 5d

Answer:

-3c+5d+7

Step-by-step explanation:

Answer:

Annette should plan to spend 2.25 hours walking back.

Step-by-step explanation:

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's assume the distance of the race is D miles.

Annette spends her time running the distance of the race, which takes:

Time running = D / 9 hours

She then walks back the same distance, which we need to find the time for:

Time walking = D / 3 hours

Since Annette has a total of 3 hours for her training, the sum of the running time and walking time should equal 3 hours:

D / 9 + D / 3 = 3

To simplify the equation, we can multiply all terms by 9 to eliminate the denominators:

D + 3D = 27

Combining like terms:

4D = 27

Dividing both sides of the equation by 4:

D = 6.75

So, the distance of the race is 6.75 miles.

To find the time Annette should spend walking back, we substitute the distance into the time-walking formula:

Time walking = D / 3 = 6.75 / 3 = 2.25 hours

Therefore, Annette should plan to spend 2.25 hours walking back.

Answer:

sine=opposite/hypotenuse

cosine=adjacent/hypotenuse

tangent=opposite/adjacent

a: 42

b: 135 km/h

Step-by-step explanation:

For part A, you are given the adjacent and opposite side lengths so you need to use the tangent formula. On the calculator, it is tan^-1 (90/100)

For part B, I used the pythagorean theorem and did 100^2+90^2= 18100 and then took the square root of that to get 135.

The number of different license plates that can be made in Idaho with 4 numbers followed by 2 letters is 6,760,000, option a is correct.

To determine the number of different license plates that can be made in Idaho with 4 numbers followed by 2 letters, we need to consider the possibilities for each element.

For the numbers, we have 10 options (0-9) for each of the four positions, resulting in a total of \(10^4 = 10,000\) combinations.

For the letters, we have 26 options (A-Z) for each of the two positions, resulting in a total of \(26^2 = 676\) combinations.

To find the total number of different plates, we multiply the number of possibilities for each element:

\(10,000 \times 676 = 6,760,000\).

Hence, option a is correct.

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Answer:

good for alex

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

Brainliesg!

Step-by-step explanation:

lxl would be

X> 5

And

X<-5

Therefore you graphed it correct

Answer:

w=5/2 or W=2 1/2 if decemial 2.5

Step-by-step explanation:

Answer:

\(\displaystyle y=2\sqrt{6}\)

\(\displaystyle x=2\sqrt{2}\)

Step-by-step explanation:

Trigonometric Ratios

The ratios of the sides of a right triangle are called trigonometric ratios.

The longest side of the right triangle is called the hypotenuse and the other two sides are the legs.

Selecting any of the acute angles as a reference, it has an adjacent side and an opposite side. The trigonometric ratios are defined upon those sides.

The image provided shows a right triangle whose hypotenuse is given. We are required to find the value of both legs.

Let's pick the angle of 30°. Its adjacent side is y. We can use the cosine ration, which is defined as follows:

\(\displaystyle \cos 30^\circ=\frac{\text{adjacent leg}}{\text{hypotenuse}}\)

\(\displaystyle \cos 30^\circ=\frac{y}{4\sqrt{2}}\)

Solving for y:

\(y=4\sqrt{2}\cos 30^\circ\)

Since:

\(\cos 30^\circ=\frac{\sqrt{3}}{2}\)

\(\displaystyle y=4\sqrt{2}\frac{\sqrt{3}}{2}\)

Simplifying:

\(\displaystyle y=2\sqrt{6}\)

Now we use the sine ratio:

\(\displaystyle \sin 30^\circ=\frac{\text{opposite leg}}{\text{hypotenuse}}\)

\(\displaystyle \sin 30^\circ=\frac{x}{4\sqrt{2}}\)

Solving for x:

\(x=4\sqrt{2}\sin 30^\circ\)

Since:

\(\sin 30^\circ=\frac{1}{2}:\)

\(\displaystyle x=4\sqrt{2}\frac{1}{2}\)

Simplifying:

\(\displaystyle x=2\sqrt{2}\)

The choices are not clear, but it seems like the correct answer is C.

\(\boxed{\displaystyle y=2\sqrt{6}}\)

\(\boxed{\displaystyle x=2\sqrt{2}}\)

Answer:

One ticket cost $10.90.

Step-by-step explanation:

The total spent was $98.50--food, drinks, admission--everything.

$44.00 was for food and drinks.

We can take the 44 away from the total.

98.50 - 44.00

= 54.50

They spent 54.50 on 5 tickets to get in. Divide to find the cost of one tickets. This assumes that all 5 tickets were the same price.

54.50 ÷ 5 = 10.90



The price of one ticket was $10.90

To make this look like algebra class...

let x = the price of one ticket

5x = the price of 5 tickets

5x + 44 = 98.50

subtract 44

5x = 54.50

divide by 5

x = 10.90

Answer:

73/48

Step-by-step explanation:

Answer:

\(8.5x+4y=99.5,\ x+y=17\)

Step-by-step explanation:

\(\mathrm{System\ of\ equations:}\\8.5x+4y=99.5\\x+y=17\\\mathrm{where,}\ x\ \mathrm{is\ the\ number\ of\ popcorns\ and\ }y\mathrm{\is\ the\ number\ of\ candies}\)

Answer:

A polygon that has 7 sides.

Step-by-step explanation:

S=(n-2)*180

n representing the sides

plug in each one into the formula and see which one = 900 degress.

Answer:

D

Step-by-step explanation:

becuz i said so

-x² + 3x + 7 is value of function  .

What is function in math?

 f(x) = 3x + 1

 g(x) = x² - 6

Then,

According to the' question :-

(f - g)(x) = f(x) - g(x)

= 3x + 1 - (x² - 6)

= 3x + 1 - x² + 6

= -x² + 3x + 7

Hence,

Option 1st : -x² + 3x + 7 is Correct.

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Answer:

extra and not necessary stuff

Step-by-step explanation:

stuff like extra clothes and eating out a lot ...

when you do not put in the money for extra stuff in collage can keep you on track by being reminding you you don't have money for it

The option that can not be included in the cost of college is:

The income you would have earned had you not gone to college.

Option C is the correct answer.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

a)

The cost of tuition.

This is a part of the cost of college.

b) The cost of books required for college classes.

This is a part of the cost of college.

c) The income you would have earned had you not gone to college.

This is not a part of the cost of college.

d) The cost of rent for your off-campus apartment.

This is a part of the cost of college.

Thus,

The income you would have earned had you not gone to college is not a part of the cost of college.

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The complete question is:

When calculating the cost of college, which of the following should you probably not include?

a) The cost of tuition,

b) The cost of books required for college classes,

c) The income you would have earned had you not gone to college,

d) The cost of rent for your off-campus apartment.