GUYS PLEASE HELP , I WILL MARK BRAINLIEST

Answer:

[tex] = x_{1} = \frac{1 - \sqrt{65} }{4} . x_{2} = \frac{1 + \sqrt{65} }{4} [/tex]

Step-by-step explanation:

[tex]2x ^{2} - x - 8 = 0[/tex]

[tex]x = \frac{ - ( - 1)± \sqrt{( - 1 {)}^{2} } - 4 \times 2 \times ( - 8)}{2 \times 2} [/tex]

[tex]x = \frac{1± \sqrt{1 + 64} }{4} [/tex]

[tex]x = \frac{1± \sqrt{65} }{4} [/tex]

[tex] = x_{1} = \frac{1 - \sqrt{65} }{4} . x_{2} = \frac{1 + \sqrt{65} }{4} [/tex]

Answer:

[tex]x=\frac{-1+-\sqrt{65}}{4}[/tex]

Step-by-step explanation:

Using the quadratic formula,

[tex]x=\frac{-b+-\sqrt{b^{2}-4ac}}{2a}\\x=\frac{-1+-\sqrt{-1^{2}+64}}{4}\\x=\frac{1+-\sqrt{65}}{4}\\[/tex]

Answer:

(3, - 5 )

Step-by-step explanation:

Under a reflection in the line y = - x

a point (x, y ) → (- y, - x ) , then

(5, - 3 ) → (3, - 5 )

Answer:

    9516

      x51

    9516 (first multiply by 9561 by 1)

47580  (second multiply 9561 by 5)

485316 (add two result.)

Step-by-step explanation:

Answer:

2.59

Step-by-step explanation:

37% 7

37 times 100

2.59

Answer:

2.59

Step-by-step explanation:

37% of 7

37*100

2.59

Answer:

the answer is 48

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

A=1/2bh=1/2(8)(6)=24

4 × 24 = 96 sq cm

Answer:

0.15

Step-by-step explanation:

0.85 = 85%

100% - 85% = 15%

15% = 0.15

Answer:

The width of a rectangular garden is x feet and its length is 5 feet more than twice its width. A 3-foot-wide path borders the inside of the garden on all sides, as shown in the diagram. Represent the total cost of paving the path at a rate of $2.45 per square foot and mulching the garden at a rate of $0.25 per square foot.

Combine the two functions to determine the total cost of paving the path and mulching the garden. To find the area to be paved, find the area of the garden excluding the inner portion; that is, subtract g(x) from f(x). If p(x) represents the area to be paved, then this is true:

p(x) = f(x) − g(x)

= (2x + 5x) − (2x2 − 13x + 6)

= 2x^2 + 5x − 2x^2 + 13x − 6

= 18x − 6

p(x) = 18x − 6

The cost of paving the path at the rate of $2.45 per square foot is $2.45p(x). The cost of mulching the garden at the rate of $0.25 per square foot is $0.25g(x). So, the total costs for paving the path and mulching the garden can be represented by this function:

$2.45p(x) + $0.25g(x)

= $2.45(18x − 6) + $0.25(2x^2 − 13x + 6)

= $(44.1x − 14.7) + $(0.5x2 − 3.25x + 1.5)

= $0.5x2 + $40.85x – $13.20.

Step-by-step explanation:

Edmentum answer

The area of the garden excluding the inner portion; that is, subtract g(x) from f(x). If p(x) represents the area to be paved, then we have p(x) = f(x) − g(x).

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

The width of a rectangular garden is x feet and its length is 5 feet more than twice its width. A 3-foot-wide path borders the inside of the garden on all sides, as shown in the diagram. Represent the total cost of paving the path at a rate of $2.45 per square foot and mulching the garden at a rate of $0.25 per square foot.

Combine the two functions to determine the total cost of paving the path and mulching the garden. To find the area to be paved, find the area of the garden excluding the inner portion; that is, subtract g(x) from f(x). If p(x) represents the area to be paved, then this is true:

p(x) = f(x) − g(x)

= (2x + 5x) − (2x² − 13x + 6)

= 2x² + 5x − 2x² + 13x − 6

= 18x − 6

p(x) = 18x − 6

The cost of paving the path at the rate of $2.45 per square foot is $2.45p(x). The cost of mulching the garden at the rate of $0.25 per square foot is $0.25g(x). So, the total costs for paving the path and mulching the garden can be represented by this function:

2.45p(x) + 0.25g(x)

= 2.45(18x − 6) + 0.25(2x² − 13x + 6)

= (44.1x − 14.7) + (0.5x² − 3.25x + 1.5)

= 0.5x² + 40.85x – 13.20

Therefore, the total costs for paving the path and mulching the garden can be represented by the function is 0.5x² + 40.85x – 13.20.

To learn more about the function visit:

https://brainly.com/question/28303908.

#SPJ2

A scale drawing is an illustration of shape where the accurate size of the new shape is in proportion to the previous shape.

Given that:

[tex]k = 3[/tex] --- the scale factor

From the given polygon, we have:

[tex]Side_1 = 8[/tex]

[tex]Side_2 = 6[/tex]

The corresponding sides of these two sides are:

[tex]Side_1 = 8 \times 3[/tex]

[tex]Side_1 = 24[/tex]

[tex]Side_2 = 6 \times 3[/tex]

[tex]Side_2 = 18[/tex]

See attachment for the scaled drawing

Read more about scaled drawing at:

https://brainly.com/question/980463

Answer:

x = 25/4

Step-by-step explanation:

1/6x-1/8=11/12

The least common multiple for 6, 8, and 12 is 24

Multiply both sides by 24 to clear the fraction

24 (1/6x-1/8=11/12)

4x -3 = 22

Add 3 to each side

4x-3+3 = 22+3

4x= 25

Divide each side by 4

4x/4 = 25/4

x = 25/4

[tex]5x-4=4x\\\\5x-4x=4\\\\\huge\boxed{x=4}[/tex]

Answer:

4=x

Step-by-step explanation:

5x-4=4x

-4=-x

4=x

Answer:

V = π × r² × h

Step-by-step explanation:

All you need to do is multiply the base times the height and since the base is a circle whose formula is π × r², we get π × r² × h.

Answer:

On his day off, Lee took a trip to the zoo. He drove an average speed of 65 mph, and it took him two-and-a-half hours to get from his house to the zoo.

Step-by-step explanation:

Answer:

4/11

Step-by-step explanation:

We can find the slope using the slope formula

m = ( y2-y1)/(x2-x1)

    = ( 1 - -3)/(7 - -4)

     = (1+3)/(7+4)

    = 4/11

Answer:

M = (13, - 6 )

Step-by-step explanation:

The coordinates of the midpoint are the average of the x and y coordinates of the endpoints.

L (- 9, 4 ) , let M = (x, y ) , then

[tex]\frac{-9+x}{2}[/tex] = 2 ( multiply both sides by 2 )

- 9 + x = 4 ( add 9 to both sides )

x = 13

and

[tex]\frac{4+y}{2}[/tex] = - 1 ( multiply both sides by 2 )

4 + y = - 2 ( subtract 4 from both sides )

y = - 6

Then

coordinates of M = (13, - 6 )

Answer:

8260

Step-by-step explanat11:

g

Answer: 8260

Step-by-step explanation:

From the decimal point (well, where it would be in this case = 8259.0) you start at the decimal and moving to the left would be tens, hundreds, thousands, etc. So once you know which digit you are looking at to round, 5 and higher, you round up, 4 and below, round down.

So if it was 8253 it would have been 8250.

Answer:

See Below.

Step-by-step explanation:

We are given the two functions:

[tex]\displaystyle f(x) = x^2 + 5x \text{ and } g(x) = 4x - 7[/tex]

9)

We want to find:

[tex]f(x) + g(x)[/tex]

Substitute:

[tex]\displaystyle = (x^2 + 5x) + (4x - 7)[/tex]

And combine like terms. Hence:

[tex]f(x) + g(x) = x^2 + 9x - 7[/tex]

10)

We want to find:

[tex]f(x) - g(x)[/tex]

Substitute:

[tex]= (x^2 + 5x) - (4x - 7)[/tex]

Distribute:

[tex]= (x^2 + 5x) + (-4x +7)[/tex]

And combine like terms. Hence:

[tex]f(x) - g(x) = x^2 +x +7[/tex]

11)

We want to find:

[tex]\displaystyle f(x) \cdot g(x)[/tex]

Substitute:

[tex]\displaystyle = (x^2 + 5x)(4x-7)[/tex]

Expand:

[tex]\displaystyle = 4x(x^2 + 5x) - 7(x^2 + 5x) \\ \\ = (4x^3 + 20x^2) + (-7x^2 -35x) \\ \\ = 4x^3 + 13x^2 - 35x[/tex]

Hence:

[tex]\displaystyle f(x) \cdot g(x) = 4x^3 + 13x^2 - 35x[/tex]

12)

We want to find:

[tex]g(x) - f(x)[/tex]

Substitute:

[tex]= (4x -7) - (x^2 + 5x)[/tex]

Distribute:

[tex]= (4x-7) + (-x^2 - 5x)[/tex]

And combine like terms. Hence:

[tex]\displaystyle g(x) - f(x) = -x^2 -x -7[/tex]

buz buz

should be the right answer but im not sure

Answer:

Step-by-step explanation:

Answer:

C? The formating is messed up but -0.04 is 10 times larger then -0.004

Step-by-step explanation:

www.ck12.org Chapter 1. Unit 1: Transformations, Congruence and Similarity

Guidance

In geometry, a transformation is an operation that moves, flips, or changes a shape (called the preimage) to create a

new shape (called the image). A translation is a type of transformation that moves each point in a figure the same

distance in the same direction. Translations are often referred to as slides. You can describe a translation using words

like "moved up 3 and over 5 to the left" or with notation. There are two types of notation to know.

1. One notation looks like T(3,5). This notation tells you to add 3 to the x values and add 5 to the y values.

2. The second notation is a mapping rule of the form (x,y) → (x −7,y +5). This notation tells you that the x and

y coordinates are translated to x −7 and y +5.

The mapping rule notation is the most common.

Example A

Sarah describes a translation as point P moving from P(−2,2) to P′(1,−1). Write the mapping rule to describe this

translation for Sarah.

Solution: In general ,P(x,y) → P′(x +a,y +b).

In this case, P(−2,2) → P′(−2+a,2+b) or P(−2,2) → P′(1,−1)

Therefore:

−2+a = 1 and 2+b = −1

a = 3 b = −3

The rule is:

(x,y) → (x +3,y −3)Answer:

Step-by-step explanation:

Work Shown:

(12 pictures)/(5 minutes) = (132 pictures)/(x minutes)

12/5 = 132/x

12x = 5*132

12x = 660

x = 660/12

x = 55

Note: I used the cross multiplication rule in the third step.

Answer:

2.25 (2 1/4) this is what i got for the answer to the division problem.

Step-by-step explanation:

sorry if i am wrong

Answer:

Step-by-step explanation:

Given

Subtract the first equation from the second:

We have a restriction in numbers:

Since 4B can be max 400, we get 99A > 1500  and 99A < 1900 so:

and

A can be 16 or 18 as it should be even number to get B the whole number.

If A = 16:

If A = 18:

So we get:

Let's proof the numbers:

F(-2) means they want the y value when c = -2

In the given function the numbers inside the parentheses are x first and y second.

One of the sets is (-2,1) this shows x at -2 and y at 1, so f(-2) = 1

Answer : 1

Step-by-step explanation:

Together they have $2735. 3000-2735=265 so the inequality is m>=265

Answer:

K 20

Step-by-step explanation:

f(x) = 7x2 - 4x

f (2) = 7 (2)^2 - 4(2)

= 28 - 8

= 20

Since they replaced the x inside f(x) with 2, just do that the same to the right side, change all x into 2