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Naily [24]
4 years ago
5

What are the roots for x?

Mathematics
1 answer:
Mandarinka [93]4 years ago
5 0

Answer:

B

Step-by-step explanation:

Use the quadractic equation, x=-b+or-sqrtb^2-4ac/2a, then simplify.

I'm really sorry that it looks messy, I don't know how to make my text look better :(

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there are 6 times as many ways to arrange the letters in the word "sleeplessness" as there are to arrange the letters in the wor
EastWind [94]

Using arrangements of words, it is found that the statement is true.

------------------

  • Suppose a word has n letters.
  • Considering that m of these letters are repeating, each n_1,n_2,...,n_m times.
  • The number of distinct ways the word can be arranged is given by:

N = \frac{n!}{n_1\times n_2 \times ... n_m}

------------------

  • The word "sleeplessness" has 13 letters.
  • s repeats 5 times.
  • e repeats 4 times.
  • l repeats 2 times.

Thus, the number of ways to arrange the letters is given by:

N_1 = \frac{13!}{5!4!2!}

------------------

  • The word "senselessness" has 13 letters.
  • s repeats 6 times.
  • e repeats 4 times.
  • n repeats 2 times.

Thus, the number of ways to arrange the letters is given by:

N_2 = \frac{13!}{6!4!2!}

------------------

Finding the ratio of N_2 to N_1:

\frac{N_2}{N_1} = \frac{\frac{13!}{5!4!2!}}{\frac{13!}{6!4!2!}} = \frac{13!}{5!4!2!} \times \frac{6!4!2!}{13!} = \frac{6!}{5!} = 6

Thus, since the ratio is 6, the statement is true.

A similar problem is given at brainly.com/question/16790460

8 0
3 years ago
Read 2 more answers
YEAR 9 MATHS PLEASE HELP ME
Genrish500 [490]

Answer:

<h2>X = 4.5</h2>

Step-by-step explanation:

So we have two equations.

y=35x+40

y=40x+17.5

We want to find the coordinates in which they intersect.

BUT They never intersect, They are parallel to each other leaving us with a

NO SOLUTION

When you are trying to solve for x you want to get rid of the y's and simply put on your paper:       35x+40 = 40x+17.5

Then you distribute, in which I am not going to show because that too many steps lol. But you'll get:

x=4.5

5 0
4 years ago
The map shows the beach area on a coordinate plane. find the distance from the car to the cabana and then from the cabana to the
yan [13]
The answer is C 9 units because it's 3 units down and then 6 units from the cabana to the beach
3 0
3 years ago
Use any method to solve the equations below.<br><br>a. x2+3x=4 b.(2x+3)(x-4)(x+4)=0
Snezhnost [94]

Answer:

Step-by-step explanation:

A. x^2+3x=4

x=1, -4

B. (2x+3)(x-4)(x+4)=0

x= -3/2, 4, -4

8 0
3 years ago
How can you find the surface area of a composite solid made up of prisms ? (Help)
sammy [17]
Oh, this is easy. For any prism, you find the surface area by finding the are of all the sides. I will post all surface area formulas here, for reference
Cube:



Surface area = 6 × a2




Right circular cylinder:



Surface area = 2 × pi × r2   +  2 × pi × r × h

pi = 3.14
h is the height
r is the radius


Rectangular prism:



Surface area = 2 × l × w  +  2 × l × h  +  2 × w × h 




l is the length
w is the width
h is the height


Sphere:



Surface area = 4 × pi × r2 

pi = 3.14
r is the radius


Right circular cone:



Surface area = pi × r2  +  pi × r ×( √(h2 + r2)) 

pi = 3.14
r is the radius
h is the height
l is the slant height 


Right square pyramid:



Surface area = s2 + 2 × s × l

s is the length of the base
h is the height
l is the slant height 
8 0
3 years ago
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