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bezimeni [28]
3 years ago
15

A round-robin tennis tournament consists of each player playing every other player exactly once. How many matches will be held d

uring an 8-person round-robin tennis tournament
Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
6 0

Answer:

The answer is "28"

Step-by-step explanation:

Given value:

total person =8

using formula:

\to \frac{n(n-1)}{2}

\to \frac{8(8-1)}{2}\\\\\to \frac{8(7)}{2}\\\\\to \frac{56}{2}\\\\\to 28

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Any large random sample from a group of people will be representative of the entire group.true false
ddd [48]

Answer:

true

Step-by-step explanation:

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3 years ago
The sum of a + b is an odd number if
Grace [21]

Answer:

a is an even number and b is an odd number

Step-by-step explanation:

if a is even and b is even then the sum would be even ex.10+6=16. I'd a and b are both odd the sum would be even ex. 13+9=22. one has to be odd and one has to be even for the sum to be odd ex. 5+4=9

8 0
3 years ago
What is the approximate area of a regular heptagon with a side length of 4 inches and a distance from the center to a vertex of
jok3333 [9.3K]
Split it into 7 triangles. Half-base of each is 2 so the distance of center to the midpoint of the base is (Pythagoras) square root of (4.62 - 22) = 4.162 triangle is this times 2, and with 7 triangles multiply also by 7 to get an approximate area of 58 sq in. 
4 0
3 years ago
X^2-5x=14 solve for x
elixir [45]

Answer:

x=7, -2.

Step-by-step explanation:

x^2-5x=14

x^2-5x-14=0

factor out the trinomial,

(x-7)(x+2)=0

zero property,

x-7=0, x+2=0,

x=0+7=7,

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8 0
3 years ago
Read 2 more answers
The volume of a rectangular prism is given by the expression 2x^4+2x^3-4x^2-4x. Write the volume as the product its dimensions.
telo118 [61]
<h3>Answer:  2x(x^2-2)(x+1)</h3>

=========================================================

Explanation:

First factor out the GCF 2x

2x^4+2x^3-4x^2-4x

2x*x^3+2x*x^2-2x*2x-2x*2

2x(x^3 + x^2 - 2x - 2)

Then let's factor the expression inside the parenthesis using the factor by grouping method

x^3 + x^2 - 2x - 2

(x^3 + x^2) + (- 2x - 2)

x^2(x + 1) - 2(x + 1)

(x^2 - 2)(x+1)

We see that x^3 + x^2 - 2x - 2 factors to (x^2-2)(x+1)

Overall, the original expression fully factors to 2x(x^2-2)(x+1)

length = 2x

width = x^2-2

height = x+1

The order of length, width, and height doesn't matter.

7 0
2 years ago
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