Ask question

Ask question

All categories

2 years ago

13

there are 5 people at a party. each person must shake hands once with every other person at the party. how many handshakes does

it take to do this?

1 answer:

Viefleur [7K]2 years ago

3 0

Here's why:

<span>Say the 5 people are A, B, C, D, E </span>

<span>A shakes hands w/ B C D E </span>
<span>B shakes w/ C D E </span>
<span>C with D E </span>
<span>D with E </span>

<span>That's 10</span>

You might be interested in

To celebrate 25 years in business, the furniture store is having a 25% off sale on all their furniture. Estimate the new price b

Kazeer [188]

Answer:

140

Step-by-step explanation:

8 0

2 years ago

What is the product of 8/15 and 2 3/4?

Black_prince [1.1K]

The correct answer is 1 7/15.

4 0

2 years ago

Help pls and no links

Nastasia [14]

Answer:

C) 4/(x+y)²

Step-by-step explanation:

start by expanding so it is written as 2÷(x+y)/(x+y)÷2.

Then rearrange so that it is 2×2/(x+y)×(x+y) or 4/(x+y)²

3 0

2 years ago

Find the area of a rhombus with side length 6 and an interior angle with measure $120^\circ$.

Serhud [2]

Answer:

The area of a rhombus is $18\sqrt{3}$ square units.

Step-by-step explanation:

Side length of rhombus = 6 units.

Interior angle of rhombus = 120°

another Interior angle of rhombus = 180°-120° = 60°.

Draw an altitude.

In a right angled triangle

$\sin \theta=\frac{opposite}{hypotenuse}$

$\sin (60)=\frac{h}{6}$

$\frac{\sqrt{3}}{2}=\frac{h}{6}$

Multiply both sides by 6.

$3\sqrt{3}=h$

The height of the rhombus is $3\sqrt{3}$ .

Area of a rhombus is

$Area=base\times height$

$Area=6\times 3\sqrt{3}$

$Area=18\sqrt{3}$

Therefore, the area of a rhombus is $18\sqrt{3}$ square units.

8 0

2 years ago

Read 2 more answers

Round 6254 correct to 1 signature figure

Marizza181 [45]

Answer:

6000

Step-by-step explanation:

6.25×10 3x
6.3×10 3x
6×10 3×

7 0

1 year ago