Pls help me urgently with all the questions!!! It's really important! Its all attached!!

Answer: 2.2

Step-by-step explanation: twenty percent of 11 is 2.2

The equation that shows proportionality is in the form y = kx; Where k is the constant of proportionality.

An equation is an expression that shows the relationship between two or more numbers and variables.

Two variables are said to be proportional if an increase or decrease in one variable leads to a corresponding increase or decrease in the other variable.

The equation that shows proportionality is in the form:

y = kx

Where k is the constant of proportionality.

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Answer:

2 and - [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the gradient and c the y- intercept )

f(x) = 2x - 1 ← is in slope- intercept form

with gradient m = 2

• Parallel lines have equal gradients , then

the gradient of a parallel line is also 2

given a line with gradient m then the gradient of a line perpendicular to it is

[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{2}[/tex]

According to the question, the given rational expression can be simplified and as shown below:

Rational expression = [tex]\frac{x^{2} -7x+10}{x^{2} -8x+15}/\frac{4-x^{2} }{x^{2} +3x-18}[/tex]

To simplify the given rational expression, calculate the factors of the numerator as well as denominator. And later divide it from each other. These expressions are also called as polynomial expressions.

Rational expression = [tex]\frac{(x-5)(x-2)}{(x-3)(x-5)}/\frac{(2-x)(2+x)}{(x+6)(x-3)}=\frac{-(x+2)}{(x+6)}[/tex]

The final expression of the given equation is [tex]\frac{-(x+2)}{(x+6)}[/tex] .

What is polynomial expression?

Polynomial expression are those equation whose highest degree is two. It is also called as quadratic equation. And it is simplified by performing the factors on the given expressions.

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According to the question, to express the rational function for the vertical asymptote whose equation is [tex]x=8[/tex] and horizontal asymptote whose equation is at [tex]y=0.[/tex]

As per the question, the function 'f(x)' is vertical at [tex]x=8[/tex]. Therefore, the denominator be [tex](x-8)[/tex]

[tex]f(x)=\frac{g(x)}{(x-8)}[/tex]

The function 'g(x)' should have same degree as the denominator function has and it is defined as[tex]y=0[/tex]

The rational function can be written as:

Rational function = [tex]\frac{y}{(X-8)}[/tex]

What is rational function?

Rational function is a function whose numerator and denominator terms are in polynomials. Basically, it is a ratio of polynomials. The important condition for these type of function is that denominator should be of degree one.

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Answer:

$3.42 spent on folders, She will receive $6.58 back in change

Step-by-step explanation:

$0.57 times 6 = $3.42 spent on the folders. $10-$3.42=$6.58 she will receive back.

Part 1: She spent $3.42 on the folders.

This is calculated by multiplying 6 folders by $0.57 for each folder

($0.57 x 6 = $3.42).

Part 2: She will receive $6.58 in change. This is calculated by subtracting the amount spent on the folders from the amount of money Gi Gi had to begin with ($10 - $3.42 = $6.58).

Point A' after the dilation of the scale factor by 1/3 is (-1,2) is the correct option.

The given point is;

Point A = (3, -6), scale factor = 1/3

Fortunately, because the dilation is centered at the origin (0,0), we can multiply the scale factor by the x and y-coordinates to acquire the image point coordinates.

Point A' = (3×1/3, -6×1/3)

Point A' = (1, - 2)

As a result, if it grows larger, it should start moving away from the origin, while if it grows smaller (as it does here), this should move closer to a origin.

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Answer:

12

Step-by-step explanation:

In this problem, we need to arrange 150 chairs in rows for a school play. You want each row to have the same number of chairs.

We can find the prime factorization of 150 as follows :

150 = 2, 3, 5, 5

150 is not a perfect square. 144 is a perfect square and 12² = 144. So, there are 12 possible arrangements.

The domain of the function is (2,∞),{x|x>2}

and the range of function is  (−∞,∞),{y|y∈R}

The domain is all values of xx that make the expression defined.

Set the argument in log(x−2)greater than 0 to find where the expression is defined.x−2>0

Add 2 to both sides of the inequality.x>2

Interval Notation:(2,∞)

Set-Builder Notation:{x|x>2}{x|x>2}

The range is the set of all valid y values.

We can find out the range by using the graph.

Interval Notation:(−∞,∞)

Set-Builder Notation:{y|y∈R}

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14x+70+20x+8=180

34x+78=180

34x=102

x=3

XBC= 20(3) +8

60+8

68

XBA= 14(3)+70

42+70

112

Angle XBC= 68 degrees

Angle XBA= 112 degrees

Answer:

83°

Step-by-step explanation:

Supplementary angles are angles that add up to 180°.
Za + Zy = 180
Za + 97 = 180
Za + 97 - 97 = 180 - 97
Za = 83

It will take 5.689 yrs . for the account to contain $2500 .

Simple Interest = ( P * R * T ) / 100

P ( principal amount ) = 2000

R ( rate of interest ) = 4

T ( no . of yrs . for which amount is deposited ) = unknown

According to question

Account Balance = $ 2500 = A( t ) = a [tex]( 1 + r ) ^{t}[/tex]

2500 = 2000 [tex]( 1 + 0.04 )^{t}[/tex]

1.25 =  [tex]( 1 + 0.04 )^{t}[/tex]

t = [log ( 1.25 ) ] / [ log ( 1.04 ) ]

t = 5.689

Hence , it will take 5.689 yrs . for the account to contain $2500 .

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Answer: -13

Step-by-step explanation: so order of operations is also PEMDAS.

and u go from left to right so using this you would multiply 8 x 5 and then you get 35. after this subtract 23-36 and u get -13.

Answer:

the answer is the 10⁰ ok that

Answer:

5000

Step-by-step explanation:

5x1000=5000

The correct answer is ( -2.2, -3).

We occasionally discover the value of an unknown variable while solving the system of equations. We can display the graph using the equation, but if the graph and the equation are parallel, we will not be able to solve the system of equations.

We have a condition that, if applied, allows us to determine how many solutions this equation has: if it has one solution, no solutions, or infinitely many solutions.

y = -3 _____(1)

y = x-0.8 _____(2)

to substitute the value of y in the equation in 2

-3 = x - 0.8

-3 + 0.8 =x

-2.2 = x

Thus the correct answer is  ( -2.2, -3).

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Answer:

Huh?

Step-by-step explanation:

1,2,3,4,5,6,7,8,9,11,12,13,14,15,16,17,18,19 (?)

The factors are (x + 4), (x + 5) & (x - 4) and the solution is x = -4,  = -5 and x = 4 and the value of the maximum profit is 680

The given parameters are

f(x) = x^3 + 5x^2 - 16x - 80

x = -4 is a root

To set up the synthetic division, we start by writing out the coefficient of each term

So, we have

-4 |  1    5    -16    -80

Bring down the first coefficient

-4 |  1    5    -16    -80

      1

Multiply by -4

So, we have

-4 |  1    5    -16    -80

           (-4)

      1

Add

-4 |  1    5    -16    -80

           (-4)

      1     1

Multiply by -4

So, we have

-4 |  1    5    -16    -80

           (-4)  (-4)

      1     1

Add

So, we have

-4 |  1    5    -16    -80

           (-4)  (-4)

      1     1     -20

Multiply by -4

-4 |  1    5    -16    -80

           (-4)  (-4)    80

      1     1     -20

Add

So, we have

Multiply by -4

-4 |  1    5    -16    -80

           (-4)  (-4)    80

      1     1     -20    0

This means that,

Quotient = x^2 + x - 20

Remainder = 0

Expand x^2 + x - 20

x^2 + x - 20 =x^2 + 5x - 4x - 20

Factorize

x^2 + x - 20 = (x + 5)(x - 4)

Recall that the initial root is

x = -4

Rewrite as

x + 4 = 0

So, we have the complete factor to be

f(x) = (x + 4)(x + 5)(x - 4)

Set to 0

(x + 4)(x + 5)(x - 4) = 0

Solve for x

x = -4,  = -5 and x = 4

Hence, the factors are (x + 4), (x + 5) & (x - 4) and the solution is x = -4,  = -5 and x = 4

The equation of the profit function is given as

P(x) = 230 + 30x - 0.5x^2

Differentiate the function

So, we have

P'(x) = 0 + 30 - x

Evaluate the like terms in the function

So, we have

P'(x) = 30 - x

Set the function to 0

So, we have

30 - x = 0

Evaluate

x = 30

Substitute x = 30 in the equation P(x) = 230 + 30x - 0.5x^2

So, we have

P(30) = 230 + 30 x 30 - 0.5 x 30^2

Evaluate

P(30) = 680

Rewrite as

Pmax = 680

Hence, the value of the maximum profit is 680

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Answer:

154

Step-by-step explanation:

Use the correct order of operations.

(120 - 14) + 4² × 3 =

First, do the parentheses and the exponent.

= 106 + 16 × 3

Now do the multiplication.

= 106 + 48

Finally, add.

= 154

The total amount that Amy will spend is $17.98

Amy goes out to eat at El Parral. She orders a Burritos Deluxe dinner for $8.75, fried ice cream for $4, and a Coke for $2.

Amy's gross total is $8.75 + $4 + $ 2  = $14.75

Now, sales tax of 6 percent

Her net bill is $14.75 + 6% of $14.75

$ 14.75 + 0.885

= $15.635

Here, Amy also gives a tip of 15 percent

Her total spending becomes

$15.635 + 15% of $ 15.635

$15.635+ 2.345

$17.980

or $ 17.98

Hence, the total amount that Amy will spend is $17.98

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Answer:

.9

85%

5/6

4/5

Step-by-step explanation:

In percentages .9 is 90%

which is larger than 85%

5/6 as a percentage is 83.33r%

4/5 as a percentage is 80%

Answer:

-8

Step-by-step explanation:

[tex]-2\left(-4\right)\left(-1\right)\\\left(-4\right)\left(-1\right)\\\left(-a\right) \times \left(-b\right)=(+c)\\= 4\\=-2 \times 4\\(-a) \times (+b) = -c\\=-8[/tex]

The equation is,

→ -2 (-4) (-1)

Let's solve the problem,

→ -2 (-4) (-1)

→ (-2 × -4) × (-1)

→ 8 × -1 = -8

Thus, the answer is -8.

The simple way to solve such an expression; −(−8q−8.7) as given in the task content is by the distributive property which yields; 8q + 8.7.

It follows from the task content that the expression which is to be simplified, or perhaps written in a different form is; −(−8q−8.7).

Therefore, it follows from the distributive property that we have;

-(-8q) -(-8.7)

Also, since the product of two negative signs yields a positive sign.

Hence, we have; 8q + 8.7 as the equivalent of the expression given.

Ultimately, the simple way to solve such an expression; −(−8q−8.7) as given in the task content is by the distributive property which yields; 8q + 8.7.

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[tex]f(x) = \alpha (x - 4) {}^{2} (x - 2) {}^{2} \\ f(x) = \alpha (x {}^{2} - 8x +16 )(x - 4x - 4) \\ f(x) = \alpha (x {}^{4} - 12x {}^{3} + 52x {}^{2} - 96 x + 64) \\ where \: \alpha ∈ \: \real[/tex]

Answer:

1920 rings

Step-by-step explanation:

Our equation: 16 x 10 x 12

16 x 10= 160

160 x 12= 1920

Answer:

Here's b > 4 on the number line. When greater than, the arrow always starts with an open circle. If less than, then it will start with a closed circle.

The answer to the question is c 47,625

The concept used is geometric progression.

A geometric progression is a sequence in which any element after the first is obtained by multiplying the preceding element by a constant called the common ratio which is denoted by r.

Here we can see that shares are being halved per week

we can say that the value of r is 1/2

so we can use the formula of sum of geometric progression to calculate the total number of shares.

sum of geometric progression formula =a(1-r∧n)/1-r

Here we can see that the value of n is 7

On putting the values in the formula we get

sum=24,000(1-1/128)/(1/2)

On further solving we get-

24000×127×2/128 which is equal to 47,625

Hence the total no of shares  of the company he bought are 47,625

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Answer:

(-4, 0) U (1, ∞)

Step-by-step explanation:

Set each factor EQUAL to zero to find the zeroes (since it is not actually equal to zero, you will use an open circle when graphing and an open bracket when writing in interval notation).

x = 0           x-1 = 0             x + 4 = 0

                  x = 1                x = -4

Next, choose a value to the far left, between each of the zeroes, and to the far right to evaluate if it makes a true statement when input into the given inequality.

far left (I choose -5): -5(-5 - 1)(-5 + 4) > 0   →  (-)(-)(-) > 0  →   negative > 0  FALSE

- 4 to 0 (I choose -2): -2(-2 - 1)(-2 + 4) > 0   →  (-)(-)(+) > 0  →   positive > 0  TRUE

0 to 1 (I choose 0.5): .5(.5 - 1)(.5 + 4) > 0   →  (+)(-)(+) > 0  →   negative > 0  FALSE

far right (I choose 2): 2(2 - 1)(2 + 4) > 0   →  (+)(+)(+) > 0  →   positive > 0  TRUE

After solving the given equation 25²x=144, the value of x = 144/625.

So,

Then,

Therefore, after solving the given equation 25²x=144, the value of x = 144/625.

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