Mathematics High School

Find the interior angle sum and the exterior angle sum of a 15 - gon .

Answers

Answer 1

Answer:

Each triangle has an angle sum of 180 degrees, so the sum of the interior angles of the 15-gon must be 13 × 180 = 2340 degrees

Step-by-step explanation:

Hope this helped :)

Related Questions

-4x + 64 < 242 + 3x
Giving extra points

Answers

Answer:

x>−178/7

Step-by-step explanation:

I'm assuming you wanted to solve for the inequality of x, if so this is the answer.

Mike is saving money for a new bike that costs $180.00.

​​If m represents the amount of money he has saved ​so far, which expression represents the amount of money,​in dollars, he still needs to save?

A. 180 + m

B. 180 - m

C. 180 x m

D. 180 ÷ m

Answers

Answer:

180-m

Step-by-step explanation:

Answer:

The answer is B. 180-m....

Polynomial Operations 1&2 Test 10 of 1610 of 16 Items Item 10 The height of a poster is 7x+10 and its perimeter is 20x+24 . What is the width of the poster?

Answers

Answer:

3x + 2

Step-by-step explanation:

The height of a poster is 7x+10 and its perimeter is 20x+24 . What is the width of the poster?

The shape of a poster = Rectangular shape

Hence:

The Perimeter of a Rectangle (Poster) = 2L + 2W

Where:

Length = Height = 7x + 10

Perimeter = 20x + 24

Therefore:

20x + 24 = 2(7x + 10) + 2W

20x + 24 = 14x + 20 + 2W

2W = 20x + 24 - (14x + 20)

2W = 20x + 24 -14x - 20

2W = 6x + 4

W = (6x + 4)/2

W = 3x + 2

Therefore, the width of the poster

= 3x + 2

Which of these systems of equations have no solution? Choose one.

Answers

Answer:

The second one

Step-by-step explanation:

The two lines never intersect.

Find the circumference of the circle if the diameter is 27m. Use 3.14 for Pi.

Answers

Answer:

Circumference= 84.78 or if needed simplified 85

Step-by-step explanation:

c=2×3.14×r

in this case to get the radius divide the diameter by 2 which would equal 13.5 so the formula would be

2×3.14×13.5=84.78

what value of theta is cos ^-1(sqrt2/2)=theta

Answers

Answer:

[tex]\frac{\pi }{4}[/tex]

Step-by-step explanation:

[tex]cos^{-1}[/tex] ([tex]\frac{\sqrt{2} }{2}[/tex] ) = [tex]\frac{\pi }{4}[/tex] = θ

I need help QUICK!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

How to do it in the photo below! 227ft should be your answer.

Please help!! Giving brainliest and extra points!! (Click on the photo)

Answers

Answer:

156cm squared. It is the only reasonable one

Step-by-step explanation:

the sum of two numbers is 10. Their product is 1 less than 5^2

Answers

Answer:

4 and 6

Step-by-step explanation:

trust me

Answer:

4 and 6

Step-by-step explanation:

6 + 4 = 10

6 x 4 = 24 which is one less than 5 x 5 which is 25

Find the circumference of the circle.
Use = 3.14
12 cm
A 18.84 cm
B 37.68 cm
C 34 cm
D 113.04 cm

Answers

I think it’s B because 3.14 times 12 is 37.68.

HALP!!! DON'T MIND MY TABS BTW!! JUST NEED HELP!!! SUPER eAsY!!

Answers

Answer: cv

Step-by-step explanation:

BRAINLIEST FOR THE CORRECT AWNSER!! This graph shows the solution to which inequality?

Answers

your answer is d) y>4/3x-2

Answer:

d

Step-by-step explanation:

so first off because it is a dotted line then it can only either be < or >.

If the shaded region is about the line than y is greater than but if its below the line then y is less the and because its above then y is greater than.

Convert the following equation into slope- intercept form.
-10x+5y=20

Answers

Answer:y=2x+4

explanation:

−10x+5y=20

Step 1: Add 10x to both sides.

−10x+5y+10x=20+10x

5y=10x+20

Step 2: Divide both sides by 5.

5y=10x+20

5. 5

Y=2x+4

What is the value of x
53
180
60
90

Answers

Answer:

I got ans 28 but not there in options I am sorry

Answer:

53

Step-by-step explanation:

x+x+2+72=180

2x=180-74

2x=106....divide both by 2

x=53

Help me the picture is above.

Answers

Answer:

10 because I am a bdgjndbk

Please help me with my question the question is in the photo

Answers

Answer:

6 intersections

Step-by-step explanation:

At what point do the lines y = x - 8 and y y = - 3x + 16 (4, - 4) (3 ) (0, 16) (2) (11, 3) ( ) (6, - 2)

Answers

Answer:

(6, -2)

Step-by-step explanation:

Correct question

At what point do the lines y = x - 8 and y = - 3x + 16 intersects?

Equating both expressions;

x - 8 = -3x+16

Collect like terms

x+3x = 16+8

4x = 24

x = 24/4

x = 6

Substitute x = 6 into any of the equation

Recall that y = x - 8

y = 6 - 8

y = -2

Hence the point (x, y) where they intersects is at (6, -2)

Write this equation in slope and intercept form. 2x+3y=0

Answers

Correct answer is y = mx + b, where m is the slope and b is the y-intercept

4) Share 40 buttons between Freya and Sophie in the ratio 6:2

Answers

the ratio is chocky stick

Answer:

Freya's share = 6×5=30

Sophie's share = 2×5=10

Step-by-step explanation:

6x+2x= 40

8x= 40

x= 5

Freya's share = 6×5=30

Sophie's share = 2×5=10

Hope this helps you.

1
To make 8 cups of tomato soup you need 2 pounds of tomatoes. How many pounds of tomatoes do you need to make 32 cups of soup?

Answers

Answer:

72

Step-by-step explanation:

sorry for blur but please help

Answers

Answer:

0 => -5

1 => -3

2 => 3

3 => 13

Step-by-step explanation:

No worries! To fill the table, we need to take the x values and insert them for the f(x) value.

The equation we're given is

f(x)=2x²-5

Starting with 0, we have

2(0)²-5

0²-5

0-5

-5

If we repeat for the rest of the values, we get the f(x) values listed above.

Answer: 0= -5 1=-3 2=3 3= 13

To answer this for every Number there is for x you have to plug it in

2(0)^2 -5
2(0)-5
0-5
=-5


2(1)^1-5
2(1x1)-5
2-5
=-3

Hope this helped!!

The length of a piece of ribbon is 1 1/2yards. How long is the ribbon in inches?

(1 yard = 36 inches)

(lol I need help on this)

Answers

The length of the piece of rubin on is 54 inches

What is the change in temperature from 15°F to -8°F?
7°F
23°F
-23°F
-7°F

Answers

The answer would be -23F because if we add -23 to 15 it would be -8

I will give brainliest to whoever answers this correctly

Answers

Answer:

A. x=5

B. y=8

C. 16.4

D. w=5

Step-by-step explanation:

I hope this helps

Answer:

A= 150 cm

B= 4 cm

Sorry if its wrong

Tyler buys 3 1/2 pounds of fresh beans. The beans are on sale for $0.98 per pound. Which expressions can Tyler use to calculate the amount of money that he will need to buy the beans? Check all that apply. 3 × 0.5 3.5 × 0.98 7/2 × 98/100 6 × 0.98 O 7 × 49/50​

Answers

Answer:

B and C or in other words 3.5 x 0.98 and 7/2x98/100

Step-by-step explanation:

[will give brainlist] PLEASE HELP

Answers

Answer:

A

Step-by-step explanation:

Look at the positive-negative values of the quadrants.

The transformed figure still has positive x values, but now has negative y values.

Answer: B, cause it's the opposite of positive X, Y.


A pair of pants that cost $75 is on sale for 20% off. What's the new price?

Answers

Answer:

60 dollars

Step-by-step explanation:

Answer:

$60

Step-by-step explanation:

Percentages are out of 100. Move the percentage sign twice in 20% to get 0.20.

Then, multiply 0.20 by 75. This gives you 15.

Lastly, subtract 15 from 75 (75-15), giving you $60 as your new price.

Solve the system of equations.
- 5x + 2y = 9
y = 72

Answers

Answer:

welcome to brainly

Step-by-step explanation:

3x + 25 = 2(4x – 10) solve step by step

Answers

Answer:

x=9

Step-by-step explanation:

3x + 25 = 2(4x – 10)

3x + 25 = 8x-20

3x-8x=-20-25

-5x=-45

5x=45

x=9

The answer is: X=9 first step is to distribute 2 into 4x and -10 then move the 8x over behind the 3x, then combine 8x and 3x together to get -5x=-20-25 combine -20 and -25 to get -45 then divide -45 by -5 to get x=9

(GIVING BRAINLIEST!!)

The library is 5 miles from the post office. How many yards is the library from the post office?

A) 5 yards
B) 352 yards
C) 8,800 yards
D) 17,600 yards

Answers

Answer: C) 8,800 yards

Hope this helps (:

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