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Finger [1]
3 years ago
8

The three side lengths of four triangles are given. which triangle is a right triangle? Triangle 1: 2, 4, 5

Mathematics
1 answer:
Nostrana [21]3 years ago
4 0

Answer:

Triangle 3

Step-by-step explanation:

A 3:4:5 triangle or any triangle of the same ratio (Like 6:8:10) is always a right triangle

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How many solutions does the following equation have?<br> -6(x + 7) = -4.x - 2
mestny [16]

Answer:

x=-20

Step-by-step explanation:

Given

-6(x+7)= -4x - 2

First of all, we have to solve brackets

So,

-6x-42=-4x-2

To find the solution of this equation, we have to isolate x on one side of the equation.

Adding 4x on both sides

-6x-42+4x = -2-4x+4x

-2x-42 = -2

Adding 42 on both sides

-2x-42+42 = -2+42

-2x=40

Dividing both sides by -2

-2x/2 = 40/-2

x = -20

The equation has only one solution which is x=-20 ..

5 0
3 years ago
In how many ways could 12 people be
laila [671]

Step-by-step explanation:

There are total 12 People

Person 1, Person 2,3,4,5,6,7, 9, 10, 11 and 12 at a round table

12 Chairs: 1,2,3,4,5,6,7,8,9,10,11 and 12                                                                                

Let chairs 1 and 2 be next to each other

Person 1 is at chair 1 and Person 2 is at chair 2

The rest of the people on 3,4,5,6,7,8,9,10,11 and 12 - can sit in 10! ways

Next, Person 1 and Person 2 change their positions;

Person 1 is sitting at 2 and Person 2 is sitting at 1

The rest of the people on 3,4,5,6,7,8,9,10,11 and 12 - can be rearranged in 10! ways

Therefore, total number of ways in which Person 1 and Person 2 are next to each other is: 2*10! = 7257600

As we then have to find in how many ways they are not sitting next to each other; subtract 7257600 from the total number of possible arrangements.

In circular permutation,

Total number of arrangements of n people = (n-1)!

Here the number of people is 12

Arrangement = (12-1)! = 11!= 39916800

Therefore, the number of ways Person 1 and Person 2 are not next to each other = 39916800 - 7257600 = 2659200

<em>Keywords: </em><em>permutation, combination</em>

<em> Learn more about permutation and combination from brainly.com/question/12953847</em>

<em> #learnwithBrainly</em>

8 0
3 years ago
Witch is grater 18/24 or 55%
GrogVix [38]

Answer:

i would say 18/24

Step-by-step explanation:

6 0
3 years ago
Need help
AysviL [449]

-3 -1 i believe is your answer

3 0
3 years ago
Points B, D, and Fare midpoints of the sides of AACE, EC = 33 and DF = 25. Find AC.
KATRIN_1 [288]

Answer:

Ac=32

Step-by-step explanation:

6 0
3 years ago
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