Mathematics Middle School

Find the sum of the interior angles for an octagon.

1,080°
1,260°
1,440°
1,620°

Answers

Answer 1

[tex]\underset{in~degrees}{\textit{sum of all interior angles}}\\\\ S = 180(n-2) ~~ \begin{cases} n=\stackrel{number~of}{sides}\\[-0.5em] \hrulefill\\ n=\stackrel{octagon}{8} \end{cases} \implies S=180(8-2)\implies S=1080[/tex]

Answer 2
What the person said above me

Related Questions

Rudina needs to determine the actual area of the entire rectangular toy courtyard. She used the model below to estimate the area.

(A) Use the scale drawing to determine the actual length of the toy courtyard.


(B) Use the scale drawing to determine the actual width of the toy courtyard.

Answers

Answer:

Step-by-step explanation:

Even though im in high school im not completely sure about this, try multiplying all the points.

to do area you multiply the sides to trie that!

Challenge You buy 3.17 pounds of apples, 1.35 pounds of pears, and 1.78 pounds of oranges. What is your total bill?
Grocery Store Prices
Item
Cost
Apples
$1.19 per
pound
$1.29 per
pound
$1.09 per
Pears
Oranges
Your total bill is $
(Round to the nearest cent as needed.)

Answers

Answer: $7.4

Step-by-step explanation:

What I did was multiply the price per lb. of apples by pounds per apples same for pears and for oranges I rounded each amount and got:

3.8 for apples

1.7 for pears

1.9 for oranges

you'd then add them all together and get a total of 7.4 dollars as your total bill.

$7.4 dollars Apples 1.19 pair 1.29 oranges 1.09

Deshaun wants to buy a new MP3 player that sells for $800 . The sales tax rate is 6.7%. What is the total cost of the MP3 player with tax included?

Answers

Answer:

$853.6

Step-by-step explanation:

6.7%=.067

.067x800+53.6+800+ansewr

853.6

If you say “6.7% of $800”
that means you have to get 6.7% into number form: 6.7% = 0.067,
“of” means multiplication. so 0.067 x 800= 53.6
add the tax to the original price = 53.6 + 800= 853.6

DUE TODAY (10/11/22) Need help on two questions!!

What term would you move using inverse operations to put this equation into standard form (Ax+By=C)

3x = 5 - 2y


5 by subtracting 5 to the other side

3x by dividing by 3 on both sides

-2y by adding 2y to other side


Natalie wanted to find the y intercept for the standard form of this equation. Here are her steps. Did Natalie make a mistake? If so, which one was her first? If not, indicate that as well.

Solve for the y intercept by substituting 0 for x.

2x + 4y = 20


Step 1: 2(0) + 4y = 20

Step 2: 0 + 4y = 20

Step 3: 4*4y = 20 * 4

Step 4: y = 80


A: Step 1

B: Step 2

C: Step 3

D: Step 4

E: Natalie made no mistakes

Answers

First problem you add 2 y second problem is step 3
#1) -2y by adding 2y to other side

#2) C: Step 3

Explanation:

#1) 5 is the only number without a variable, so isolating it would make the standard form true.

#2) Opposite of multiplication is division, so rather than multiplying 4 to both sides, Natalie should've divided.

Please answer quickly and correctly, and add the steps to solving the math equation!

Answers

^^^^^^^^^^^^^^^^^^^^^
A=21
B= -21
C= Negative or (-) because 2x2=4
Then -2x2=-4 so -4x4=16
A negative times a positive = a negative

What is (3x2.05)+(_x1.09)+(2x_)+(_x_) I NEED HELP PLEASE SOMBODY

Answers

What are the numbers in those underscores?

PLEASE HELP- I KNOW NOTHING-

Answers

3.2x10^-5 is the answer
3.2e-5 or 3.2e^-5 would be the scientific notation.

Which of the quotients are equivalent to 5? Select all that apply.

Answers

Answer:

-15/-3 and -5/-1

Step-by-step explanation:

two negatives make a positive when multiplying or dividing, and they're kinda obvious anyway

Above answers are correct

Sarah has red and blue modeling clay. When she found that of her modeling clay was red, she gave some to her brothers. She gave of the red clay to Bradley and of it to Shane.

Bradley and Shane wanted to determine how much of Sarah's modeling clay they received in all. Sarah said they could find the amount by simplifying the expression. Their mom, Theresa, said that they could find the amount by simplifying the expression.

The absolute value of the difference between the two methods proposed by Sarah and Theresa is

Answers

Answer:

задащададдадвбкдплп дБ лпдплладаллплпдалпщалладвжахпддапщадбьдалпьп пщлпьпдп пдлп

Write an equation that matches the scenario using the variable “n.”
The difference of three times a number and four is the same as seven times a number plus eight

Answers

Answer:

3n-4=7n+8

Step-by-step explanation:

Consider a variable n

three times of number: 3n

seven times of number: 7n

so according to condition:

3n-4=7n+8

3n-4=7n+8 I think so

What is the value of the expression (−9)(−10)?
(NEED AWNSER ASAP)

Answers

Answer:

90

Step-by-step explanation:

when  you multiply two negative integers they always equal positive so in this case its (-9) x (-10), you can just do 9x10 which gets u 90

Multiplying two positive integers always result in a positive integer.

Multiplying two negative integers always result in a negative integer.

Multiplying a positive or negative integer always result in a negative integer.

90
because negative x negative is always positive and 9x10 is 90

Edna ordered a set of yellow and orange pins. she received 35 pin, and 20% them were yellow. how many yellow pins did Edna receiv?

Answers

Answer:

7 yellow pins

Step-by-step explanation:

20% can also be 0.2 when turned into a decimal

35 × 0.2 = 7

pins × percent of yellow pins = yellow pins

Answer:7

Step-by-step explanation:

pleasee helppppp !!
Hector paid $105 for 6 tickets to a hockey game. Each ticket costs the same amount.
What was the cost of each ticket in dollars and cents?

Answers

Answer:

$17.5

Step-by-step explanation:

For this problem, you go through division.

Because the tickets cost the same amount, the total must be split equally between each one.

$105/6

If you are not allowed to use a calculator, then use long division.

6 goes into 105 a max of 17 times. (6*17 = 102)

   

  _102__

6 | 105

    102

105 - 102 = 3

Check again. 6 does not go into three at all, so bring a point zero(.0) onto the 3 for visual clarity. It does not change the number itself.

  _102._

6 | 105.0

    102.0

        3.0

6 will go into 30, 5 times. 6*5 = 30

  _102.5

6 | 105.0

    102.0

        3.0

        3 0

           0

17.5 all you do is take 105 divided by 6 giving you how much each is

I am a five digit number.
I have an 8 in the ten thousands place.
The rest of my digits are odd.
I have a 1 in the thousands place.
The difference between the ten thousands and the thousands place is the value of the ones place.
What is the largest number I can be?

Answers

Answer:

81,777

Step-by-step explanation:

that's it I think

Answer:

81,997

Step-by-step explanation:

A store sells a package of 25 trading cards for​ $5.25. What is the unit price per​ card?

Answers

The cost of one trading card obtained using the principle of proportionality is $0.21


Given the Parameters:

25 trading cards = $5.25


Let the Cost of one trading card = b


We could set up a proportional system to calculate the Cost of one trading card as
follows :

25 cards = $5.25
1 card = b


Cross multiply:

25b = $5.25


Divide both sides by 25 to isolate b



25b/25 = 5.25 / 25
b= $0.21


Therefore, one trading card costs $0.21
The numerator is smaller than the denominator what you divide 5.25 by 25 so the unit price is going to be less than 1.

The unit price is $0.21

Step-by-step explanation:

25 cards = $5.25

5.25/25 = $0.21

AirPod Pros sell for $249 regularly. Cyber Monday deals offered them for 20% off. How much could be saved by buying them on Cyber Monday?

Answers

Answer: The answer is $49.80.

Step-by-step explanation:

First, you set up the equation.

[tex]\frac{?}{249} = \frac{20}{100} = ?[/tex]    

Now, you have to cross multiply, and divide to solve!

[tex]\frac{249*20}{100} = \frac{4980}{100} = 49.80[/tex]    This is only the number that could be saved not the actual amount you would get the AirPod Pros for with the 20% discount.

The answer is $49.80.

Three-fifths of the students in a room are girls. One-third of the girls have blond hair. One-half of the boys have brown hair. What fraction of the students are girls with blond hair?

Answers

Answer:

1/5

Step-by-step explanation:

The answer is 1/5 of the students are blond girls, since 1/3 of 3/5 is 1/5. 

Divide 3/5 by 3, which is 1/5. 

Hope this helps!

Your answer would be 1/5

How to get the answer:

Since 3/5 of the students are girls and 1/3 of them have blonde hair you’d basically multiply 3/5 x 1/3 and you’d get 3/15. Then you have to simplify by dividing by 3 and you get 1/5.

Find a unit rate: Joel ran 1500 meters in 5 minutes, 20 seconds.
Give your answer accurate to at least one decimal place.

Answers

Answer:

  4.6875 m/s

Step-by-step explanation:

You want the unit rate if Joel ran 1500 m in 5 minutes, 20 seconds.

Rate

The speed is found by dividing distance by time. In seconds, the time is ...

  min:sec = 5:20 = (5·60) +20 = 320 . . . . seconds

Then the rate is ...

  (1500 m)/(320 s) = 4.6875 m/s

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Nathalia's credit in her student loan shows -$12,450.98 while Nicoll's credit shows -$12,956.05.

Which statement correctly compares the two amounts?

Nathalia's credit in her student loan shows -$12,450.98 while Nicoll's credit shows -$12,956.05. Which statement correctly compares the two amounts?


A. -12,450.98 = -12,956.05

B. -12,450.98 < -12,956.05

C. |-12,450.98| > |-12,956.05|

D. |-12,450.98| < |-12,956.05|

Answers

Answer:

the answer to your question would be D

Answer:

D. |-12,450.98| < |-12,956.05|

Step-by-step explanation:

|-12,450.98| < |-12,956.05| =  12,450.98 < 12,956.05

Find the slope from the table of values.

Question 5 options:



2




-2




1/2




-1/2

Answers

The answer is 2 because for X it goes up by two and for Y it goes up by 4 the it’s rise over run so 4/2 which is 2

Abraham is staying in a mountain cabin for the weekend. In the morning, he hike 7.5 miles up north to see a waterfall. At night he went 2.5 down south from his cabin to a restaurant to eat dinner. What does zero represent in this situation?

Answers

Answer:

he went zero miles.

Step-by-step explanation: x and y

Answer: The person above me is correct

Step-by-step explanation:

Which integer in the set has the greatest value (4, -4, -3, 3)?

Answers

Answer:

Step-by-step explanation:

it is four because it is the biggest number

Answer:

they are equal

Step-by-step explanation:

An aircraft carrier left Hawaii traveling west seven hours before a container ship. The container ship traveled in the opposite direction going 5 km/h slower than the aircraft carrier for six hours after which time the ships were 540 km apart. Find the aircraft carrier's speed.

Answers

As we know distance = rate*time

Aircraft carrier:

time is 13 hours, 7 hours before container ship left then the 6 hours container traveled.

Let s be speed of aircraft carrier

--> d = 13s

Container ship:

time is 6 hours

speed is 5 km/h slower, so s-5

--> d = 6(s-5)

Since they are going in opposite directions, add up the distances to find how far apart they are

--> 13s + 6(s-5) = 540

Now solve for s-

--> 13s +6s -30 = 540

--> 19s = 570

--> s = 30

Aircraft carrier was traveling at 30 km/h and container ship 25 km/h

For more such examples refer to this link: :HTTP://brainly.com/question/27814900?answering=true&answering-source=feed Public%homepage%2F51

What the person said above me is the ring answer

The mean temperature for the first 4 days in January was -6°C.
The mean temperature for the first 5 days in January was -5°C.
What was the temperature on the 5th day?
PLEASE HELP THIS IS DUE TOMORROW!!!!!!!!!!!!!!!!!!!!

Answers

Answer: -1°C
mean: subtract the smallest number from biggest number
hoped this helped!
-1°C you need to subtract

Angles A and B are complementary to each other. If m∠A = 37° and m∠B = (3x + 17)°, find the value of x.

x = 39
x = 21
x = 12
x = 6.7

Answers

x=12 bc complimentary means 90 so 90-37 =53 then you subtract off the 17 to get 36 then 36/3 =12

The value of x is 12.

The correct option is (B).

What are Complementary Angles?

Complementary angles are those whose combined angle is 90 degrees or less. To put it another way, two angles are said to be complimentary if they combine to make a right angle.

Two angles are said to be complementary if their sum is 90 degrees. By deducting an angle from 90, one can find its complement.

For instance, 90° - 40° = 50° is the complement of 40°.

Given:

m∠A = 37° and m∠B = (3x + 17)°

As, the sum of Complementary angle is 90.

<A + <B= 90

37 + 3x+ 17 = 90

3x + 54 = 90

3x = 36

x= 12

Hence, the value of x is 12.

Learn more about Complementary angles here:

https://brainly.com/question/5708372

#SPJ2

A sandwich store charges $20 to have 3 turkey subs delivered and $26 to have 4 delivered.

Answers

Each sub cost 6$-6.5$

Answer: $6.50 - $6.67

Step-by-step explanation:

20/3 = 6.67

26/4 = 6.5

You can use this answer or try to find the middle of the two numbers.

Find the total cost to the nearest cent. $24 lunch; 15% tip

Answers

i just took 15% of the 24 and its 2.60 and then u add

10% of 24= 2.4
5% of 24= 1.2
15% of 24= 3.8
24+3.8
27.8

Write down the inequality for x that is shown on this line.

Answers

Answer:

x>3

Step-by-step explanation:

An open circle on a graph indicates greater than or less than and since the line points to the right then it'd be greater than and the circle is on 3.

The required inequality will be 3

Need answer as soon as possible please

Answers

Answer:the second one y=6x-5

Step-by-step explanation:

so :

6x-5=0

6x=0+5

6x=5

x=5:6 =0,83

A ( 0,83 ; 0)

x=0

2 x 0 -5  = -5

B(0; -5)

answer : y=6x-5
explanation:

(ASAP 70 POINTS)
Use the equation "one sixth plus s equals 21 over 30" to answer the questions.

Part A: Determine two numbers that the solution to the equation is between. Support your answer using the correct vocabulary. (2 points)

Part B: Solve for the variable. Show your work. (2 points)

Answers

Answer:

5/21

Step-by-step explanation:

1/6 divided by 21/30

1/6 x 30/21

30/126

30 divided by 126 = 5/21

Answer:

5/21

Step-by-step explanation:

i need these pts

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