What is the sum of interior degrees for a 13-gon?

How many degrees in each angle for a regular 13-gon?

What is the sum of interior degrees for a 23-gon?

How many degrees in each angle for a regular 23-gon?

What is the sum of interior angles for a triangle?

What is the sum of interior angles for a quadrilateral?

What is one difference, and one similarity between a Square and a Rhombus?

Answer:

x = 2y

x + 4 = 3y + 1

2y + 4 = 3y + 1

y = 3, x = 6

Answer:

D: is the answer  

Step-by-step explanation:

A. +   add

B. −   subtract

C. ×   multiply

D. ÷  divide (can also be written with a "/") as in 3/2 vs 3÷ 2

The symbol used to write an algebraic expression for "three divided by a number" is the division symbol, ÷. We write this based off the description as '3 ÷ n' or '3/n' in fractional form.

To write an algebraic expression for "three divided by a number," you would use the division symbol which is represented as ÷. So, if our unknown number is represented by the letter 'n', the algebraic expression would be written as "3 ÷ n" or "3/n" in fractional form.

In an algebraic expression, each symbol represents a specific mathematical action. The '+' symbol is for addition, '-' is for subtraction, 'x' is for multiplication, and '÷' is for division. In this case, since the problem specifies division, the correct symbol to use would be '÷'.

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The two shorter sides in triangle A can be demonstrated to be the same length as the two shorter sides in triangle B by showing 'a' equals 'p' and 'b' equals 'q'. The two triangles would accordingly be congruent using the Side-Side-Side (SSS) Postulate.

Triangles A and B are right-angled triangles, which means each has one angle that measures 90 degrees. You're asking to show that the two shorter sides in triangle A have the same length as the two shorter sides in triangle B. This would mean that these sides are congruent.

Firstly, let the two shorter sides in triangle A are 'a' and 'b', and in triangle B are 'p' and 'q'. If triangle A and B are congruent, this means 'a' should equal 'p' and 'b' should equal 'q'.

Finally, the two triangles would be congruent based on the Side-Side-Side (SSS) Postulate, which states that if the three sides of one triangle are congruent to the three sides of a second triangle, then the two triangles are congruent.

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Final answer:

To show that two right angled triangles are congruent, you compare the two shorter sides. If they are equal in length, then the triangles are congruent by the Side-Angle-Side (SAS) postulate, as the right angle is also congruent.

Explanation:

To demonstrate that two right angled triangles, Triangle A and Triangle B, are congruent when the two shorter sides have the same length, first let's assume they are right angled at vertex C. If the sides AC and BC are congruent to the sides A'C' and B'C' respectively in triangles ABC and A'B'C', and since right angles are always congruent, then by the Side-Angle-Side (SAS) postulate of congruency, the two triangles are congruent.

According to the Pythagorean theorem, which 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 (this is expressed as c² = a² + b²), we know that if the two legs a and b are congruent in two right triangles, then the hypotenuses will also have to be congruent.

If Triangle A and Triangle B have sides of equal lengths and right angle at C, the triangles are congruent by the SAS postulate, proving that both triangles are identical in shape and size.

Answer:

2:15 PM

Step-by-step explanation:

When the plane arrives in Seattle, the time in eastern time period would be 5:15 PM.  From eastern to pacific, the time goes back 3 hours. 5:15 - 3 hours is 2:15. Since the time is still in the afternoon, it is still PM.

Answer:

2:15pm

Step-by-step explanation:

1) Take 1:09pm and add 4 hours and 6 mins to the time

2) 1 hour and 9 minutes + 4 hours and 6 minutes = 5:15pm (in eastern time)

3) Subtract 3 hours from 5 hours and 15 minutes. This equals 2:15pm

This would be the answer because of the time zone change.

Answer:

The length of the mat is 60 in.

Step-by-step explanation:

Given :

Mats are inclined to form a triangle.

two sides of the mat are right triangles.

Hence the triangle formed is right angled triangle.

Let the length  be x.

Now,The height of the mat is 28 inches shorter than the length of the mat.

Height of mat = x - 28

Also, the hypotenuse is 8 inches longer than the length of the mat.

Hypotenuse = x + 8

Hence by using Pythagoras theorem we get ,

[tex]Hypotenuse^2= lenght^2+height^2\\[/tex]

[tex]x^2+(x-28)^2=(x+8)^2\\x^2+x^2-56x+784=x^2+16x+64\\x^2-72x+720=0\\x^2-60x-12x+720 = 0\\x(x-60)-12(x-60)=0\\(x-12)(x-60) = 0\\x-12=0\\x=12\\x-60=0\\x=60[/tex]

Now we get 2 values of length 12 and 60.

But height is 28 in less than length.

And when we take length value as 12 the height will be negative hence it can't be true.

Hence the Length of mat = 60 in.  

Answer:

Ryan: 75

Shauna: 65

Step-by-step explanation:

x = ryan's height

x - 10 = shauna's height

x + (x - 10) = 140

2x - 10 = 140

2x = 150

x = 75

Shauna is 65 inches tall and Ryan is 75 inches tall.

Let the height of:

Shauna be represented with s

Ryan be represented with r.

Sum of their heights : s + r = 140

The equation that represents Shauna's height : r - 10

Substitute for Shauna's height in the first equation:

r - 10 + r = 140

Solve for r

2r = 150

r = 75 inches

Substitute for r in the first equation

75 + s = 140

s = 140 - 75

s = 65 inches

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Answer:

x=5/2, y=15/2. (5/2, 15/2).

Step-by-step explanation:

y=x+5

y=3x

---------

x+5=3x

5=3x-x

5=2x

x=5/2

y=3(5/2)=15/2

The measure of the vertex angle of the isosceles Δ is 96°

Step-by-step explanation:

In the isosceles triangle

∵ The measure of one of the base angles of an isosceles Δ = 42°

- The base angles are equal in measure

∴ The measure of the other base angle = 42°

∵ The sum of the measures of the interior angles of any Δ = 180°

∴ 42 + 42 + measure of the vertex angle = 180

∴ 84 + measure of the vertex angle = 180

- Subtract 84 from both sides

∴ measure of the vertex angle = 96°

The measure of the vertex angle of the isosceles Δ is 96°

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Answer:

y = 42x

Step-by-step explanation:

Answer:

The answer is y=42x

Answer:

Adults= 250 tickets

Children= 400 tickets

Step-by-step explanation:

Answer

250 adult tickets were sold and 400 children tickets were sold

Step by Step Explanation:

Given

Saturday Sales: $3675

Total tickets: 650

Cost of adult tickets = $7.50

Cost of children tickets = $4.50

Let A represent the adult tickets and C represent the children tickets,

if there's a total of 650 tickets, then

A + C = 650

Also,

if an adult ticket cost $7.50 and a child ticket cost $4.50 then

7.5A + 4.5C = 3675

From these, we have a simultaneous equation

A + C = 650 ------- (1)

7.5A + 4.5C = 3675 ----------(2)

Make A the subject of formula in (1)

A + C = 650  becomes

A = 650 - C

Substitute 650 - C for A in (2), we have

7.5(650 - C) + 4.5C = 3675

Open the bracket

4875 - 7.5C + 4.5C = 3675

4875 - 3C = 3675

Collect like terms

-3C = 3675 - 4875

-3C = -1200

Divide through by -3

[tex]\frac{-3C}{-3} = \frac{-1200}{-3}[/tex]

C = 400

Recall that

A = 650 - C

So, A = 650 - 400

A = 250

Hence, 250 adult tickets were sold and 400 children tickets were sold

Answer:

The Whole numbers that satisfies the condition A - B = 18 is

A = 25

B= 7

Step-by-step explanation:

Whole number:

Whole numbers are positive numbers, including zero, without any decimal or fractional parts.

They are numbers that represent whole things without pieces.

The set of whole numbers is represented mathematically by the set: {0, 1, 2, 3, 4, 5...}

so there are many answers to this question which satisfies A- B  = 18

Few are given below

A = 19 and B = 1     ∴   19 - 1  = 18

A = 20 and B = 2   ∴  20 - 2 = 18

A = 18 and B =0     ∴   18 - 0 = 18

A = 39 and B = 21   ∴  39 - 21 = 18

A = 25 and B= 7    ∴    25 - 7 = 18

i.e A should be always greater than B to satisfy  A- B = 18 condition.

Answer:

This cannot be done, but it can be factored as: 6(5x + 1)

Step-by-step explanation:

This expression cannot be distributed any further.

The distributive property is used when multiplying polynomials (multiplying one or more terms by two or more terms). In which case, each term in multiplied by each of the terms in the bracket, for example: .

5(x + 2)  =  5x + 10

We can factor this expression however to go the opposite direction:

30x + 6

Since 30 and 6 are both divisible by 6, we can factor it out of each term.

Divide 30x by 6 and divide 6 by 6.

6(5x + 1)

Answer:

23/4 = 5.75

Step-by-step explanation:

Answer:

He saved $25.

Step-by-step explanation:

Final answer:

To find out how much of the circle is shaded by adding 1/3 and 2/7, we determine the least common denominator, convert each fraction, and then add the numerators. The shaded area of the circle is 13/21.

Explanation:

The student asked how much of the circle is shaded if you add the fractions 1/3 and 2/7. To find this, we need to calculate the sum of these two fractions. Since 1/3 is less than 1/2 and 2/7 is also less than 1/2, their combined value must be less than 1. To add fractions, you need a common denominator. The least common multiple of 3 and 7 is 21, so we will convert each fraction to have a denominator of 21:

Now, we add the numerators while keeping the denominator the same:

7/21 + 6/21 = 13/21.

This represents the shaded area of the circle in fraction form. Therefore, 13/21 of the circle is shaded.

Answer: 39 loaves were sold in the afternoon

Step-by-step explanation: So basically what you do here is divide 60 by 100. That makes 0.6, 0.6 equals 1%. (60 equals 100% and that why you divide by 100) Now, you multiply 0.6 by 65. the answer is 39. 65% of the bread is 39 loaves. So 39 loaves were sold in the afternoon.

Have an amazing day! :)

Answer:

60 x 65% = 39

So 39 were sold in the afternoon

Step-by-step explanation:

Answer:

A)  Out of 6,000 trials, one can expect 4800 successes.

Step-by-step explanation:

Here, the total number of trials  = 6,000

The probability of winning each trial = 0.8

Now, as we know in a BINOMIAL EVENT:

q = n x p

⇒ The number of success out of 6,000 trials

= 6,000 x (0.8)  = 4800

Hence, out of 6,000 trials, one can expect 4800 successes.

(3, 6) can replace the missing value and create a function

Step-by-step explanation:

Given relation is:

{(8,5), (2, 3), (1,6), (7,4), _?_}

In order for a relation to be a function, the first condition is that there should be no repetition in domain of the function i.e. same input cannot map to multiple outputs.

In the form of ordered pairs, the first element of each ordered pair represents the elements of domain set

So,

From all the option given, only (3,6) is suitable to be put in the blank space as it will create no repetition in the domain while other ordered pairs will cause repetition.

Hence,

(3, 6) can replace the missing value and create a function

Keywords: Relations, functions

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Answer:

A=F

Step-by-step explanation:

It's the congruency

Equation 5 + 5 = 10  and 5 + 5 + n = 10 + n are equivalent equation

Given that  

John wrote that 5 + 5 = 10   ------ (1)

Then wrote that 5 + 5 + n = 10 + n    ------ (2)

Need to determine are the equations written by John are equivalent.

First we need to keep in mind that whenever we apply same operation like addition, subtraction, multiplication and division on both the sides of equation that is left hand side and right hand side, we get the equivalent equation.

As in the second equation John added same value that is n on both sides of equation, we can say that equation with n is equivalent to the previous equation without n

Other way is let’s solve equation (2) and see if we can get equation (1)

5 + 5 + n = 10 + n  

On subtracting both the sides with n we get,

5 + 5 + n – n = 10 + n – n

=> 5 + 5 = 10 which is same as equation (1)

Hence we can conclude that equation 5 + 5 = 10 and 5 + 5 + n = 10 + n are equivalent equation.

Final answer:

The equations 5 + 5 = 10 and 5 + 5 + n = 10 + n are equivalent because adding the same number 'n' to both sides of an equation does not change the original equality.

Explanation:

Yes, the equations that John wrote are equivalent. The first equation, 5 + 5 = 10, establishes that the sum of five plus five equals ten. The second equation, 5 + 5 + n = 10 + n, simply adds n to both sides of the first equation. This does not change the equality because, according to the properties of equality, if you add the same amount to both sides of an equal sign, the two sides remain equal. This can also be seen as an application of the commutative property of addition which states that numbers can be added in any order without changing the sum, as in A + B = B + A. Therefore, the original sum of 5 + 5 on the left side remains 10 when n is added to both sides, showing that 5 + 5 + n is indeed equal to 10 + n.

The prepayment fee of $6182.58 would  be charged to Artemis for paying off her loan 16 years early.

Answer: Option C

Step-by-step explanation:

30 year loan at 9.6% interest yields.  

Number of month = 30 (12) = 360 months

Annual percent interest of [tex]\frac{9.6 \%}{12}[/tex] = monthly percent interest of .8%

The formula for the present value of an ordinary annuity, as opposed to an annuity due, is as follows

            [tex]P M T= \frac{P \times r}{1-(1+r)^{n}}[/tex]

With r and n adjusted for periodicity, where

P = the present value of an annuity stream

PMT = the dollar amount of each annuity payment

r = the interest rate (also known as the discount rate)

n = the number of periods in which payments will be made

              [tex]P M T= \frac{190000 \times 0.008}{1-(1+0.008)^{-360}} = \frac{1520}{1-(1.008)^{-360}} = \frac{1520}{1-0.0567}=\frac{1520}{0.9432}[/tex]

                   PMT = $1611.50 per month

Her loan 16 year early. It means

              [tex]\text { Worth of loan after } 14 \text { year } = 190000 \times(1.008)^{168} = 3.814 \times 190000=\$ 724641.16[/tex]

Worth of monthly payments for 14 year

           [tex] = \frac{1611.50 \times\left\{(1.008)^{168}-1\right)}{0.008} = \frac{1611.50 \times(3.81-1)}{0.008} = \frac{4.534 .6}{0.008} = \$ 566825.15[/tex]

Amount still owed after 14 year = difference of the above two

                                                    =$724641.16 - $566825.18

                                                    =$157816.01

Prepayment fee = [tex](0.8 \times 157816.02) \times\left((1.008)^{6}-1\right)[/tex]

                         = 126252.82 (1.049-1) = 126252.82 (1.0489-1) = $6182.63

Answer:

[tex]T_n= 9+(n-1)[/tex]

Step-by-step explanation:

The Given sequence is 9, 10, 11, 12

We need to find the expression to describe the sequence.

Let [tex]T_n[/tex] be the [tex]n^{th}[/tex] term of the sequence.

Let n represent the position of the term.

Let a be the first term in the sequence.

and d be the common difference between the sequence

Hence the expression to find the above sequence is given below;

[tex]T_n= a+(n-1)d[/tex]

when n=1 d= 1 a = 9

[tex]T_1 = 9+(1-1)1 = 9 + 0 = 9[/tex]

when n=2 d= 1 a = 9

[tex]T_2 = 9+(2-1)1 = 9 + 1 = 10[/tex]

when n=3 d= 1 a = 9

[tex]T_3 = 9+(3-1)1 = 9 + 2 = 11[/tex]

when n=3 d= 1 a = 9

[tex]T_4 = 9+(4-1)1 = 9 + 3 = 12[/tex]

Hence the expression is [tex]T_n= 9+(n-1)[/tex]

The expression to describe the sequence 9, 10, 11, 12, ... is 8 + n, with n representing the position of the term in the sequence.

The sequence given is 9, 10, 11, 12, ..., which is an arithmetic sequence where each term increases by 1 from the previous term. To write an expression that represents the nth term of this sequence using n to represent the position of the term (with n = 1 for the first term), we need to find a formula that calculates the value of each term based on its position.

The first term of the sequence is 9 when n = 1. The second term is 9 + 1, and the third term is 9 + 2, and so on. Generalizing this, the nth term can be written as the first term value (9) plus the number of terms after the first one, which is (n - 1), since for the first term, n - 1 equals 0. Therefore, the final expression is:

9 + (n - 1)

We can simplify this expression as: 8 + n

This expression will give us the value of each term in the sequence based on its position n.

These two ratios are not equivalent, as 18 trucks and 4 cars simplifies to a ratio of 9:2, while 21 trucks and 6cars simplifoes down to a ratio of 7:2. Obviously, there is a difference between 9:2 and 7:2, so they are not equivalent.

Answer:

12 more feet

Step-by-step explanation:

Reason why is because if you add 14 and 4 you get 18 then you add 18 with 12 and you get 30. (hope this helps)

Answer:

The sum of 50 and 6 is the total of 56

Answer:

Fifty plus six equals fifty-six.

Answer:

1. 81

2. 43

3. 14

4. 32

5. 216

6. 6,7760.25

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Answer:

Part A) The reasonable domain to plot  the growth function is the interval [0,5]

Part B) The average rate of change is [tex]0.21\ \frac{cm}{day}[/tex]

see the explanation

Step-by-step explanation:

Part A)

Let

f(n) -----> the height of the plant in cm

n ----> the number of days

we have

[tex]f(n)=10(1.02)^n[/tex]

This is a exponential function of the form

[tex]f(x)=a(b)^x[/tex]

where

a is the initial value

b is the base

r is the rate of growth

b=(1+r)

In this problem we have

[tex]a=10\ cm[/tex] ----> initial value or y-intercept

[tex]b=1.02\\r=b-1=1.02-1=0.02\\r=2\%[/tex]

For f(n)=11.04 cm

Find the value of n

substitute in the exponential function

[tex]11.04=10(1.02)^n\\11.04/10=(1.02)^n\\1.104=(1.02)^n[/tex]

Apply log both sides

[tex]log(1.104)=(n)log(1.02)\\n=log(1.104)/log(1.02)\\n=5\ days[/tex]

so

The reasonable domain to plot  the growth function is the interval -----> [0,5]

[tex]0 \leq x \leq 5[/tex]

Part B) What is the average rate of change of the function f(n) from n = 1 to n = 5, and what does it represent?

the average rate of change is equal to

[tex]\frac{f(b)-f(a)}{b-a}[/tex]

In this problem we have

[tex]f(a)=f(1)=10(1.02)^1=10.2\ cm  f(b)=f(5)=10(1.02)^5=11.04\ cm\\a=1\\b=5\\[/tex]

Substitute

[tex]\frac{11.04-10.2}{5-1}=0.21\ \frac{cm}{day}[/tex]

The average rate of change is the change of the function values (output values) divided by the change of the input values.

That represent ----> The plant grew an average of 0.21 cm per day during that time interval

"Part A) The reasonable domain to plot  the growth function is the interval [0,5]

Part B) The average rate of change is

see the explanation

Step-by-step explanation:

Part A)

Let

f(n) -----> the height of the plant in cm

n ----> the number of days

we have

This is a exponential function of the form

where

a is the initial value

b is the base

r is the rate of growth

b=(1+r)

In this problem we have

----> initial value or y-intercept

For f(n)=11.04 cm

Find the value of n

substitute in the exponential function

Apply log both sides

so

The reasonable domain to plot  the growth function is the interval -----> [0,5]

Part B) What is the average rate of change of the function f(n) from n = 1 to n = 5, and what does it represent?

the average rate of change is equal to

In this problem we have

Substitute

The average rate of change is the change of the function values (output values) divided by the change of the input values.

That represent ----> The plant grew an average of 0.21 cm per day during that time interval"quoted from

Answer:0

Step-by-step explanation:

because once you flip all of them there all in the air and there flipped

Answer:

12.22

Step-by-step explanation:

I don't know if 12.22 is an answer for you but if it's not I would round to 12. What you do is multiply 9.32 by 16 3/4 which gives you 156.11. Take 156.11 and subtract 150 since Garth is putting that in the bank which leaves you with 6.11. Lastly you will divide 6.11 by .5 which will give you 12.22. So Garth can buy 12 raffle tickets.

Answer:

Garth can buy 12 raffle tickets.

Step-by-step explanation:

This is because when you multiply 9.32 with 16, it is 149.12.

Then, each quarter an hour, or 15 minutes, he earns 2.33 dollars.

Multiply by 3 and you get 6.99.

Add 6.99 with 149.12 and you get 156.11

Get rid of 150$ and you have 6.11

Each dollar you can get 2 raffle tickets.

So 6 dollars or 6, multiplied by 2 is 12.

Hope this helps you!

P.S If I may, can I please have brainliest, I would greatly appreciate it.

Answer:

[tex]y=\frac{x}{2}+\frac{2}{3}[/tex]

Step-by-step explanation: