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Lubov Fominskaja [6]
3 years ago
7

Please help!!

Mathematics
1 answer:
Pani-rosa [81]3 years ago
3 0

Answer:

the answer is B, x=7

Step-by-step explanation:

heron's area formula:

s = \frac{a + b + c}{2}

area =  \sqrt{s(s - a)(s - b)(s - c)}

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The most popular mathematician in the world is throwing aparty for all of his friends. As a way to kick things off, they decidet
ratelena [41]

Answer:

The no. of possible handshakes takes place are 45.

Step-by-step explanation:

Given : There are 10 people in the party .

To Find: Assuming all 10 people at the party each shake hands with every other person (but not themselves, obviously) exactly once, how many handshakes take place?

Solution:

We are given that there are 10 people in the party

No. of people involved in one handshake = 2

To find the no. of possible handshakes between 10 people we will use combination over here

Formula : ^nC_r=\frac{n!}{r!(n-r)!}

n = 10

r= 2

Substitute the values in the formula

^{10}C_{2}=\frac{10!}{2!(10-2)!}

^{10}C_{2}=\frac{10!}{2!(8)!}

^{10}C_{2}=\frac{10 \times 9 \times 8!}{2!(8)!}

^{10}C_{2}=\frac{10 \times 9 }{2 \times 1}

^{10}C_{2}=45

No. of possible handshakes are 45

Hence The no. of possible handshakes takes place are 45.

4 0
3 years ago
The soccer net in Peter's back yard is 5 1/2 feet high, but only 4 feet wide. Jill's soccer net is also 5 1/2 feet high, but is
Black_prince [1.1K]

The area of Jill's soccer net is 3 times larger than area of Peter's soccer net.

<h3> Area of Peter's soccer net</h3>

The area of Peter's soccer net is determined by using area of rectangle as shown below;

A1 = 5.5 ft x 4 ft

A1 = 22 ft²

<h3> Area of Jill's soccer net</h3>

A2 = 5.5 ft x 12 ft

A2 = 66 ft²

<h3>Ratio of the area of their soccer net</h3>

A2/A1 = 66/22

A2/A1 = 3

Thus, the area of Jill's soccer net is 3 times larger than area of Peter's soccer net.

Learn more about area of rectangle here: brainly.com/question/25292087

4 0
2 years ago
write a conjecture as to the number of sides as compared to the number of triangles formed when drawing diagonals from one verte
zmey [24]

Answer:The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined as follows: start with any positive integer n. Then each term is obtained from the previous term as follows: if the previous term is even, the next term is one half the previous term. If the previous term is odd, the next term is 3 times the previous term plus 1.

Step-by-step explanation :an opinion or conclusion formed on the basis of incomplete information.

8 0
3 years ago
A rotation or turn always moves clockwise and never counterclockwise.<br> True<br> False
Dima020 [189]

Answer:

False

Step-by-step explanation:

It can go in any direction

7 0
3 years ago
Read 2 more answers
Can You Guys Help Me Plz
saul85 [17]

Answer:

I'm pretty sure the answer is F

7 0
3 years ago
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