please help me for this question....​

Answer:

9:18

Hope this helps <3

Answer:

Step-by-step explanation:

In reality it is :  [tex](x-\frac{1}{x} )^5\\[/tex]

[tex]Pascal'sTriangle\\\\\begin{array}{cccccc}1\\1&1\\1&2&1\\1&3&3&1\\1&4&6&4&1\\1&5&10&10&5&1\\\end{array}\\\\\\(x-\frac{1}{x} )^5\\\\=x^5+5*x^4*\frac{1}{x} *(-1)+10*x^3*\frac{1}{x^3}*(-1)+5*x*\frac{1}{x^4} +\frac{1}{x^5} *(-1)\\\\\\\boxed{(x-\frac{1}{x} )^5=x^5-5x^3+10x-\frac{10}{x} +\frac{5}{x^3} -\frac{1}{x^5} }[/tex]

Answer:

720

Step-by-step explanation:

He has 8 books. He knows the placement of 2... so

8 - 2 = 6

To find the total... 6!

6*5*4*3*2*1 = 720

The required number of the ways the book is arranged on the shelf is 720 ways.

Given that,
Kareem is putting 8 books in a row on his bookshelf. He will put one of the books, Pride, and Prejudice, in the first spot. He will put another of the books, Little Women, in the last spot. In how many ways can he put the books on the shelf is to be determined.

In arithmetic, combination and permutation are two different ways of grouping elements of a set into subsets. In combination, the components of the subset can be recorded in any order. In a permutation, the components of the subset are listed in a distinctive order.

here,
There are 8 books to be arranged, 1st and last place is fixed,
now remaining books = 8 - 2 = 6
now, a number of combinations can be formed with the number 6,
= 6!
= 6×5×4×3×2×1
= 720

Thus, the required number of the ways the book is arranged on the shelf is 720 ways.

Learn more about permutations and combinations here:

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Perimeter of a triangle is the sum of measures of its all three sides, let the other be y,

we know,

[tex] \hookrightarrow \: y + 3x + 2 + 4x - 9 = 16x - 6[/tex]

[tex] \hookrightarrow \: y + 7x - 7 = 16x - 6[/tex]

[tex] \hookrightarrow \: y = 16x - 6 - 7x + 7[/tex]

[tex] \hookrightarrow \: y = 6x + 1[/tex]

hence, measure of the third side is 6x + 1

Answer:

[tex]\huge\boxed{\sf Solution \ Set = \{-1, \ -2/5\}}[/tex]

Step-by-step explanation:

[tex]\sf 5x^2+7x+2 = 0\\\\By \ mid-term\ break,\\\\5x^2 + 5x+2x+2=0\\\\Taking \ common\\\\5x(x+1)+2(x+1)=0\\\\Take \ (x+1) \ common\\\\(x+1)(5x+2)=0\\\\Either, (By \ Zero's \ Method)\\\\x+1 = 0 \ \ \ OR \ \ \ 5x + 2 = 0\\\\x = -1 \ \ \ OR \ \ \ x = -2/5\\\\Solution \ Set = \{-1, \ -2/5\}\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

$7.5

Step-by-step explanation:

if we set up the proportion [tex]\frac{10}{4} =\frac{x}{3}[/tex]   with cost on top and water bottles on bottom, we can divide  10/4 too get 2.5, which we can then multiply by 3 to get our x value, 7.5.

Answer:

10: a

11: c

Step-by-step explanation:

10. Use the midpoint formula

[tex]\frac{-6+8}{2}[/tex], [tex]\frac{2+9}{2}[/tex] = 1, 5.5

11. 7 + 4 + 4 = 15

(add two fours because N is the midpoint)

Answer:

Step-by-step explanation:

[tex]5 = \frac{2}{5} a[/tex]

=> 5 × 5 = 2a

=> 25 = 2a

[tex] = > \frac{25}{2} = a[/tex]

[tex] = > a = 12 \frac{1}{2} (ans)[/tex]

Answer:

∠x = 78

Step-by-step explanation:

∠y + ∠1 = 180

=> 125 + ∠1 = 180

=> ∠1 = 180 - 125

=> ∠1 = 55

∠z + ∠2 = 360

=> 313 + ∠2 = 360

=> ∠2 = 360-313

=> ∠2 = 47

∠1 + ∠2 + ∠x = 180

=> 55 + 47 + ∠x = 180

=> ∠x = 180 - 55 - 47

=> ∠x = 78

Answer:

[tex]x=78[/tex]

Step-by-step explanation:

Skills needed: Exterior Angle Theorem, Triangle Geometry:

1) We need to solve for [tex]x[/tex] and there are 2 methods to do it. I will go over the fastest way (since it's better).

2) In order to use this theorem, we need to solve for the angle near [tex]z[/tex]. This angle would be [tex]360-z[/tex], which is [tex]360-313[/tex] (since [tex]z=313[/tex]).

[tex]360-313[/tex] = [tex]47[/tex]

3) Then, we can use the fact that [tex]y=x+47[/tex] (47 is the measure of the angle we just solved for.)

[tex]y=125[/tex], so [tex]125=x+47[/tex]

Subtract 47 from both sides, and get [tex]x=78[/tex]

Hope you understood and have a nice day! :D

Note: I have attached one image that shows my work, and another image that shows the exterior angle theorem (which I created on a whiteboard). Hope you get it! If you have any questions, comment and I can answer it ASAP!

Step-by-step explanation:

hope it helps you check it if there is a mistake sorry!! for that

Answer:

44

Step-by-step explanation:

4×(2)×4-2×(7)×2+40=?

8×4-14×2+40=?

32-28+40=

=44

Answer: The angles are 36 and 144.

Step-by-step explanation:

Let the linear pairs be 4x and x

so

4x + x = 180 (being linear pair)

or, 5x = 180

or, x = 180/5

so, x = 36

so, 4x = 4*36 = 144

Answer:

Step-by-step explanation:

(-5)² = (-5) * (-5) = 25

Here Take square for (-5)

- 5²  = - 5 * 5   = - 25

Here take square for 5

Answer:

y - 4 = 1/3 (x - 3)

Step-by-step explanation:

Answer:

6x - 4

Step-by-step explanation:

Cross out the 3 in the denominator and the 9, which simplifies to 2 times 3x, which is 6x.  For the second part, cross out 3 in the denominator and -6, which becomes 2 times (-2), which is -4.

Answer:

50

Step-by-step explanation:

Do you what explanation?

Graphs are used to show the relationship between variables, where the variables are represented by a pair of axes.

Given that:

[tex]C(t) = \frac{-10t^2 + 50t}{t^2 + 4t + 3 }[/tex]

(a): The domain of the function

Because the medication concentration C(t) is a function of time (t), the domain is the possible values t can take.

t, cannot take negative values (i.e. it is not possible to have a negative time).

The least possible value of t is 0

So, the domain of the function based on the context is:

[tex]t \ge 0[/tex]

(b) The greatest concentration of the medication

From the graph (see attachment), the maximum y-value is 5.

Hence, the greatest concentration of the medication is 5 mg/L

Read more about functions and graphs at:

https://brainly.com/question/18806107

A function assigns the values. The greatest concentration of the medication that a patient will have in their body is when the time is t=1.

A function assigns the value of each element of one set to the other specific element of another set.

A.) Given the function of the concentration of medication in the body as to[tex]C(t)=\ \frac{\left(-10t^{2}+50t\right)}{t^{2}+4t+3}[/tex] where t is the time. Since the time can not be negative, therefore, the domain of the function is t≥0.

B.) The graph of the function can be plotted as shown below. Now, the greatest concentration of the medication that a patient will have in their body is when the time is t=1.

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Answer:

C.

law of contrapositive

Answer:

law of contrapositive

Step-by-step explanation:

Answer:

[tex] \frac{ - 2}{5} \times \frac{5}{9} \\ \frac{ - 2 \times 5}{5 \times 9} \\ \frac{ - 10}{45} \\by \: diving \: both \: numbers \: by \: five \: we \: get \\ \frac{ - 2}{9} [/tex]

I hope it helped U

stay safe stay happy

Answer: - 2/9

Alternative Answer: 0.222222222 (Repeated)

Step-by-step explanation:

- 2/5 x 5/9

Reduce the numbers with the greatest common factor 5

- 2 x 1/9

Simplify and calculate the product

- 2/9 or - 0.2222222 (Repeated)

Learn more: https://brainly.com/question/12262792

Answer:

Second option,domain:  negative infinity, 4 and range, negative infinity, 3

The domain are all the x's that you can input into a function. It looks like the function goes to all x's from negative infinity until it hits positive 4. that's why it is -infinity, 4 for the domain.

The range is all the y's that are outputted. As you can see, the function goes to all y's from negative infinity to 3.

Step-by-step explanation:

[tex]\\ \rm\hookrightarrow \dfrac{\sqrt{x+1}+\sqrt{x-1}}{\sqrt{x+1}-\sqrt{x-1}}+\dfrac{\sqrt{x+1}-\sqrt{x-1}}{\sqrt{x+1}+\sqrt{x-1}}[/tex]

[tex]\sf Let\begin{cases}\sf \sqrt{x+1}=a \\ \sf \sqrt{x-1}=b\end{cases}[/tex]

Now

[tex]\\ \rm\hookrightarrow \dfrac{a+b}{a-b}+\dfrac{a-b}{a+b}[/tex]

[tex]\\ \rm\hookrightarrow \dfrac{\left\{(a+b)(a+b)\right\}+\left\{(a-b)(a-b)\right\}}{(a+b)(a-b)}[/tex]

[tex]\\ \rm\hookrightarrow \dfrac{(a+b)^2+(a-b)^2}{a^2-b^2}[/tex]

[tex]\\ \rm\hookrightarrow \dfrac{a^2+2ab+b^2+a^2-2ab+b^2}{a^2-b^2}[/tex]

[tex]\\ \rm\hookrightarrow \dfrac{2a^2+2b^2}{a^2-b^2}[/tex]

[tex]\\ \rm\hookrightarrow \dfrac{2(a^2+b^2)}{a^2-b^2}[/tex]

Put values

[tex]\\ \rm\hookrightarrow \dfrac{2\left[(\sqrt{x+1})^2+(\sqrt{x-1})^2\right]}{(\sqrt{x+1})^2-(\sqrt{x-1})^2}[/tex]

[tex]\\ \rm\hookrightarrow \dfrac{2(x+1)(x-1)}{(x+1)(x-1)}[/tex]

[tex]\\ \rm\hookrightarrow 2\left(\dfrac{(x+1)(x-1)}{(x+1)(x-1)}\right)[/tex]

[tex]\\ \rm\hookrightarrow 2(1)[/tex]

[tex]\\ \rm\hookrightarrow 2[/tex]

Answer:

it was helpful to you dear ❣️❣️❣️❣️❤️❤️❤️

Answer:

17

Step-by-step explanation:

Answer:

x = 17

Step-by-step explanation:

We can find the missing angle inside the triangle by doing 180 - 94 = 86.

Every triangle has 3 angles that add up to equal 180 so we can set these three angles to equal 180.

60 + 86 + 2x = 180

146 + 2x = 180

Subtract 146 from both sides

2x = 34

Divide by 2 to isolate x

x = 17

Answer:

you can solve it using quadratic formula

w=5-2 √6 or w=5+ 2√6

Answer:

5/4 or 1 . 1/4

Step-by-step explanation:

3/4 + 1/2 = 5/4 or 1 . 1/4

Here is your answer. Hope this helps you.

Answer:

51

Step-by-step explanation:

15= a/3 -2

17= a/3

51=a

Answer:

Step-by-step explanation:

You can roll an 8 in the following ways

3 - 5

5 - 3

4 - 4

6 - 2

2 - 6

That's 5 ways that it can be done. There are a total of 36 ways to throw 2 dice.

The probability of getting an 8 is 5/36

Answer:

p = 0

Step-by-step explanation:

[tex]8 - 4(2p - 2) = 7 + p + 9[/tex]

➡️ [tex]8 - 8p + 8 = 16 + p[/tex]

➡️ [tex]16 - 8p = 16 + p[/tex]

➡️ [tex] - 8p = p[/tex]

➡️ [tex] - 8p - p = 0[/tex]

➡️ [tex] - 9p = 0[/tex]

➡️ [tex]p = 0[/tex]