1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
earnstyle [38]
3 years ago
11

How many diagonals are in a polygon with 14 sides.

Mathematics
1 answer:
Akimi4 [234]3 years ago
5 0
I think it's 77 sides
You might be interested in
Helppppppp??????!!!!!!!!!!
zzz [600]
I think the answer would be C. (btw, you should charge your phone/tablet, lol)
7 0
3 years ago
What is the justification for the first step in proving the formula for factoring the sum of cubes?
Anna11 [10]

Explanation:

The formula isnt correctly written, it should state:

a^3+b^3 = (a+b)(a^2-ab+b^2)

You have to start from (a+b)(a^2-ab+b^2)  and end in a³+b³. On your first step, you need to use the distributive property.

(a+b)(a^2-ab+b^2) = a*(a^2-ab+b^2) + b*(a^2-ab+b^2)

This is equal to

a*a^2-a*(ab) + a*b^2 + b*a^2-b*(ab) + b*b^2 = a^3 - a^2b + ab^2 +ba^2 -b^2a +b^3

Note that the second term, -a²b, is cancelled by the fourth term, ba², and the third term, ab², is cancelled by the fifht term, -b²a. Therefore, the final result is a³+b³, as we wanted to.

5 0
3 years ago
A newspaper reports the median house price is $250,000. From that standard, tell what you know about housing prices.
Alik [6]
You know that the average house price is $250,000 dollars
Median means medium
8 0
3 years ago
Question 17, 19 and 21 ?
Vaselesa [24]
If this is Textbook work- use SLADER (the app or the website)
3 0
3 years ago
Please answer for BRAINLIEST!
oee [108]

Answer:

1.5 units squared

Step-by-step explanation:

Area of a Triangle formula: A = 1/2bh

Pythagorean Theorem: a² + b² = c²

Since you are missing the <em>h </em>to find the area of the triangle, you must use Pythagorean to find the 3rd missing side (it is a right triangle so you can use Pythagorean).

Step 1: Use Pythagorean

2.5² = 1.5² + b²

4 = b²

b = 2

Step 2: Switch variables

b (from Pythagorean) = h (height for Area)

Step 3: Solve for Area

A = 1/2(1.5)(2)

A = 1.5

And you have your final answer.

8 0
3 years ago
Other questions:
  • PLEASE HELP WILL MAK BRAINLIEST
    14·2 answers
  • Michael has a fish tank that has a length of 7 inches, a width 6 inches and and height of 8 inches. What is the total surface ar
    5·2 answers
  • What exponent should you use to represent the power of 10 below?<br> 10,000,000 = 10?
    10·2 answers
  • Write an equation to represent the following statement <br> 29 is 6 more than k.
    6·1 answer
  • What type of number is the square root of 5
    7·1 answer
  • SOMEONE QUICKLY DO THIS PLEASE!!!
    14·1 answer
  • This is my spring break hw but I don’t understand this question
    7·1 answer
  • A 20,000 gallon tank is 3/4full. If the drain valve on this tank allows 2.5 gallons of water to be drained per minute, about how
    13·1 answer
  • I NEED HELP EMERGENCY!!
    14·1 answer
  • The number y of objects a machine produces is proportional to the time x (in minutes) that the machine runs. The machine produce
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!