Help me!!! 100 points !!

Answer:

2x^2 = 28 - x

-28+x -28+x

2x^2 + x - 28 = 0

ac=-56

m+p=-7,8

(2x-7)(2x+8)=0

2x-7+7=0+7

2x/2=7/2

x=3.5

2x+8-8=0-8

2x/2=-8/2

x= -4

Step-by-step explanation:

x=-4 or 3.5

Final answer:

The quadratic equation 2x² = 28 - x is solved by rearranging it to 2x² + x - 28 = 0, factoring by grouping, and finding the solutions x = 4 and x = -3.5. The solutions are verified by substituting them back into the original equation.

Explanation:

To solve the equation by factoring, we first need to rearrange the equation to set it to zero. The original equation given is 2x² = 28 - x. Moving all terms to one side gives us 2x² + x - 28 = 0. We can solve this quadratic equation by factoring:

First, look for two numbers that multiply to give ac (in this case, 2 * -28 = -56) and add to give b (in this case, 1).

These two numbers are 7 and -8 since 7 * -8 = -56 and 7 + (-8) = -1.

Rewrite the middle term using these two numbers: 2x² + 7x - 8x - 28 = 0.

Factor by grouping: (2x² + 7x) - (8x + 28) = 0.

Factor out the common terms: x(2x + 7) - 4(2x + 7) = 0.

Factor out the common binomial: (x - 4)(2x + 7) = 0.

Solving each factor separately gives us: x = 4 and x = -7/2 or -3.5.

The solutions we find are x = 4 and x = -3.5. To check if these solutions are correct, we can substitute them back into the original equation and verify if they satisfy the equation, thereby confirming they are correct.

Answer:

Step-by-step explanation:

Whole Circle

The formula for the area of a circle is ...

  A = πr² . . . . . where r is the radius and π is the value given

The radius of the circle is half the diameter, so is 0.4 m. Putting the numbers into the formula, we get ...

  A = (314)(0.4 m)² = 0.5024 m²

Rounding to the nearest tenth, the area is ...

  0.5 m²

__

Area of Sector CTM

As above, the area of the circle is ...

  A = πr² = (3.14)(3 in)² = 28.26 in²

A whole circle has a central angle of 360°. The sector of interest has a central angle of 125°, so its area is the fraction 125/360 of the area of the whole circle.

  sector area = (125/360)(28.26 in²) = 9.8125 in²

Rounding to the nearest tenth, the sector area is ...

  9.8 in²

Answer: 3/13 is closer to 0 than 1/2 or 1.

- This is because 1/2 of 1/13 would be about 6.5/13.

- Since 3/13 is not close to 1/2, nor it will be to 1.

Answer:

  128

Step-by-step explanation:

There are a couple of ways to go at this. One is to use a proportion:

  (10 servings)/(1.25 cups) = (x servings)/(16 cups)

  160/1.25 = x = 128 . . . . . . . multiply by 16 and simplify

1 gallon of milk will make 128 servings.

__

Another way to go at this is to figure out how much milk is used in one serving. It is ...

  1.25 cups/(10 servings) = 0.125 cups/serving = 1/8 cup/serving

Now, you can work with several different conversion factors:

  1 cup = 8 oz

  1 gal = 128 oz

  1 gal = 16 cups

Obviously 1/8 cup is 1 oz. Since there are 128 oz in a gallon, the gallon will make 128 servings.

__

Or, you can divide 16 cups by (1/8 cup/serving) to find the number of servings:

  (16 cups/gal)/(1/8 cup/serving) = 16·8 servings/gal = 128 servings/gal

Answer:

128

Step-by-step explanation:

I can do math yay

Answer:

By definition, the derivative of f(x) is

[tex]lim_{h\rightarrow 0}\frac{f(x+h)-f(x)}{h}[/tex]

Let's use the definition for [tex]f(x)=\frac{1}{x}[/tex]

[tex]lim_{h\rightarrow 0} \frac{\frac{1}{x+h}-\frac{1}{x}}{h}=\\lim_{h\rightarrow 0} \frac{\frac{x-(x+h)}{x(x+h)}}{h}=\\lim_{h\rightarrow 0} \frac{\frac{(-1)h}{x^2+xh}}{h}=\\lim_{h\rightarrow 0} \frac{(-1)h}{h(x^2+xh)}=\\lim_{h\rightarrow 0} \frac{-1}{x^2+xh)}=\frac{-1}{x^2+x*0}=\frac{-1}{x^2}[/tex]

Then, [tex]f'(x)=\frac{-1}{x^2}[/tex]

Answer:

It is rotated by 72 degrees.

Step-by-step explanation:

        when u connect all the corners of it to the middle of the polygon, they       will meet at a point i.e, CENTER.

Because,

[tex]\frac{360}{60} = 6[/tex]

[tex]12*6 = 72[/tex]

( For every minute, it will be rotated by 6 degrees.

so, for 12 minutes it should be rotated by 12 times 6 ( 12*6) = 72 degrees)

Answer:

It take 12 hours for 2 lawnmowers to cut 6 acres of grass

Step-by-step explanation:

We are given that It takes 4 lawnmowers to cut 2 acres of grass in 2 hours.

Let [tex]T_1 , M_1 and W_1[/tex] denotes the time taken , No. of land mowers and Amount of grass respectively in case 1 .

[tex]T_1=2 \\W_1=2\\M_1=4[/tex]

Now The amount of time varies directly with the amount of grass and inversely with the number of lawnmowers

Let [tex]T_2 , M_2 and W_2[/tex] denotes the time taken , No. of land mowers and Amount of grass respectively i case 2

[tex]T_1=? \\W_1=6\\M_1=2[/tex]

So, [tex]\frac{M_1 \times T_1}{W_1}=\frac{M_2 \times T_2}{W_2}[/tex]

Substitute the values

[tex]\frac{4 \times 2}{2}=\frac{2 \times ?}{6}[/tex]

[tex]\frac{4 \times 2 \times 6}{2 \times 2}=?[/tex]

[tex]12=?[/tex]

Hence it take 12 hours for 2 lawnmowers to cut 6 acres of grass

Answer:

D. 12

Step-by-step explanation:

hope this helps :)

Answer:0.472

Step-by-step explanation:

Given

there are 36 slots with 0 and 00 as two slots which are neither odd nor even

i.e. there are 34 remaining slots numbered 1 to 34

there are 17 odd terms and 17 even terms

thus Probability of getting a odd number is [tex]=\frac{17}{36}=0.472[/tex]

Answer:

P(odd#'s) = number of odd numbers/total number of outcomes = 18/38 = 9/19

Step-by-step explanation:

Answer:

D) (0.443, 0.497)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The confidence interval for a proportion is given by this formula

[tex]\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}[/tex]

For the 99% confidence interval the value of [tex]\alpha=1-0.99=0.01[/tex] and [tex]\alpha/2=0.005[/tex], with that value we can find the quantile required for the interval in the normal standard distribution.

[tex]z_{\alpha/2}=2.58[/tex]

And replacing into the confidence interval formula we got:

[tex]0.47 - 2.58 \sqrt{\frac{0.47(1-0.47)}{2294}}=0.443[/tex]

[tex]0.47 + 2.58 \sqrt{\frac{0.47(1-0.47)}{2294}}=0.497[/tex]

And the 99% confidence interval would be given (0.443;0.497).

We are confident that about 44.3% to 49.7% of registered voters approved of the job Barack Obama was doing as president.

Answer:

0.006

Step-by-step explanation:

This is joint probability and thus the probability of the given event is the product of:

(probability of drawing a 2 on the first draw)*(prob. of dring a 3 on the second draw), or

4         4          16

----- * ------ = ------------ = 0.006

52     52        (52)^2

Answer:

1/169

Step-by-step explanation:

if you mean a deck as in the 52 cards then the answer is the following.

there are 4 cards in a deck with the number 2 on it. 2 of spades, diamonds, hearts and clubs. so the probability would be 4/42 because there is 4 out of the 52 cards there are. next there is also 4 cards with three on it, so 4/52 again.you multiply these two to get the answer(but before you do i would recommend to simplify it to 1/13) to get 1/169

Answer: Berma is 5 years old

Rinna is 38 years old

Erwin is 37 years old

Step-by-step explanation:

Let x represent Berma's age

Let y represent Rinna's age

Let z represent Erwin's age

Since the sum of their ages is 80,

x + y + z = 80 - - - - - - -1

Two years from now, Rinna’s age will be 13 less than the sum of Erwin’s age and twice Berma’s age. This means that

y +2 = [ (z+2) + 2(x+2) ] - 13

y +2 = z + 2 + 2x + 4 - 13

2x - y + z = 13 + 2 - 4 -2

2x - y + z = 9 - - - - - - -2

Three years ago, 15 times Berma’s age was 5 less than the age of Rinna. It means that

15(x - 3) = (y - 3) - 5

15x - 45 = y - 3 - 5

15x - y = - 8 + 45

15x - y = 37 - - - - - - - -3

From equation 3, y = 15x - 37

Substituting y = 15x - 37 into equation 1 and equation 2, it becomes

x + 15x - 37 + z = 80

16x + z = 80 + 37 = 117 - - - - - - 4

2x - 15x + 37 + z = 9

-13x + 2 = -28 - - - - - - - - -5

subtracting equation 5 from equation 4,

29x = 145

x = 145/29 = 5

y = 15x - 37

y = 15×5 -37

y = 38

Substituting x= 5 and y = 38 into equation 1, it becomes

5 + 38 + z = 80

z = 80 - 43

z = 37

Answer:

Step-by-step explanation:

First we have to find the worth of 50 Ib of both mixtures, so we multiply 50 by 2.72 since the owner wants to sell the mixture at $2.72 per pound

50 Multiplied by $2.72 equals $135

Then we divide that amount by 2 since we are considering two types of products, raisins and nuts

$135 divided by 2 equals $67.5

So we find the amount of raisins that is worth $67.5 and we know a pound of raisins cost $3.2

We divide $67.5 by $3.2 which will give 21.09 Ib (Amount for the raisins)

We divide $67.5 by $2.4 which will give 28.13 Ib (Amount for the nuts)

Final answer:

The store owner should mix 20 lb of raisins with 30 lb of nuts to make a 50 lb mixture that can be sold for $2.72 per pound. This is determined by solving a system of linear equations.

Explanation:

The owner of the store wants to mix raisins and nuts to sell a 50 lb mixture for $2.72 per pound. To find out the quantities of raisins and nuts he should use, we can set up a system of equations. Let R represent the amount of raisins in pounds and N represent the amount of nuts in pounds. The two equations area:

We can solve this system using the substitution or elimination method. Assuming we choose elimination, we can multiply the first equation by 2.40 to make the coefficient of N the same in both equations:

Subtracting these equations gives us:

Dividing both sides by 0.80 gives us the amount of raisins:

Using the first equation (R + N = 50), we can find the amount of nuts:

So the owner should mix 20 lb of raisins with 30 lb of nuts to make the mixture.

The problem is solved by using calculus to find the maximum of the area function for a rectangle. The dimensions that yield maximum area with 24 yards of fencing are a length of 6 yards and a width of 12 yards, resulting in an area of 72 square yards.

The problem involves maximizing the area of a rectangle with a fixed perimeter. Let's define the length of the rectangle as x and the width as y. Since you have 24 yards of fencing and you need to enclose three sides of the rectangle, the perimeter equation becomes 2x + y = 24, which can be rearranged as y = 24 - 2x.

The area of the rectangle can be represented by the equation A = xy, and substituting the y value from our perimeter equation, we get A = x(24 - 2x). To maximize this area, we take the derivative of A with respect to x and set it equal to zero, yielding the equation 24 - 4x = 0, or x = 6. Substituting x = 6 back into the y equation gives y = 12.

Therefore, the dimensions that maximize the area of the deck are a length of 6 yards and a width of 12 yards. Substituting these values back into the area equation gives a maximum area of 72 square yards.

https://brainly.com/question/34713449

#SPJ3

Answer:

  see below

Step-by-step explanation:

The next step in copying the angle is to copy the width of it (the length of its chord) to the new location. First, you have to set the compass to that chord length, GF.

Answer:

C. Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.

just passed on edge-nuity

Step-by-step explanation:

Kylie's explanation is incorrect. The simplified expression for (negative 4x + 9) squared is 16x squared - 72x + 81.

Kylie's explanation is incorrect.

The statement that (negative 4x + 9) squared results in a difference of squares is incorrect.

To simplify (negative 4x + 9) squared, we need to multiply the expression by itself. Using the formula (a + b) squared = a squared + 2ab + b squared, we can expand (negative 4x + 9) squared as follows:

(negative 4x + 9) squared = (negative 4x) squared + 2(negative 4x)(9) + (9) squared
= 16x squared - 72x + 81

So, the correct simplification of (negative 4x + 9) squared is 16x squared - 72x + 81, not 16x squared + 81.

Answer:

- 0.2 cm/s

Step-by-step explanation:

Volume of a cylinder =  πr²l--------------------------------------------------------(1)

dV/dt =(dV /dr ) x (dr/dt) +  (dV /dl ) x (dl/dt) ---------------------------------(2)

dV/dr = 2 πrl

dV/dl  =  πr²

dr/dt   = Unknown

dl/dt   = 0.1 cm/s

dV/dt = 0

From equation (1), the length of the cylinder can be calculated when r = 5cm

V = πr²L

100 = π (5)²L

L =100/25π

  =4/π

To find the rate of radius change  (dr/dt) we substitute known values into equation (2):

0 = 2 π (5) (4/π) x  (dr/dt) + π(5)² x 0.1

0 =  40 (dr/dt)  + 2.5π

40 (dr/dt) = -2.5π

     dr/dt =   -2.5π/40

              =  -0.1963 cm/s

              ≈ - 0.2 cm/s

The negative sign shows that the radius of the cylinder of constant volume decrease at a rate twice the length.

Answer: z=1.9065

Step-by-step explanation:

As per given , we have

[tex]H_0: p=0.10\\\\ H_a: p<0.10[/tex]

Sample size : n= 150

No. of potatoes sampled are found to have major defects = 8

The sample proportion of potatoes sampled are found to have major defects :

[tex]\hat{p}=\dfrac{8}{150}=0.0533[/tex]

The test statistic for population proportion is given by :-

[tex]z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\ [/tex] , where p=population proportion.

n= sample size.

[tex]\hat{p}[/tex] = sample proportion.

[tex]z=\dfrac{0.0533-0.10}{\sqrt{\dfrac{0.10\times0.90}{150}}}\\\\=\dfrac{-0.0467}{0.02449}\\\\=-1.90651951647\approx1.9065[/tex]

Hence, the value of the large-sample z test statistic is z=1.9065 .

Answer:

C

Step-by-step explanation:

f"(x) < 0, which means the function is concave down at all values of x.

For any such function, within the domain of a ≤ x ≤ b, the secant line S(x) is below the curve of f(x), and the tangent line T(x) is above the curve of f(x).

Here's an example:

desmos.com/calculator/fyektbi9yl

Answer: option B is the correct answer

Step-by-step explanation:

Candace's backyard has a flower garden that covers 40% of her backyard.

If the total area of her backyard is 450 square feet, it means that her garden covers 40% of 450 square feet.

To determine how many square feet is her flower garden, we will find the value of 40% of 450 square feet. It becomes

40/100 × 450= 0.4×460 = 180 square feet

Answer:

  (2646 +110.25π) cm² ≈ 2992.4 cm²

Step-by-step explanation:

The area of a sphere is 4 times the area of a circle with the same radius. Hence the area of a hemisphere will be 2 times the area of that circle. This means carving a hemispherical depression in the face of the cube will add an area that is equal to the area of the circular hole.

Of course the total surface area of a cube is 6 times the area of one square face. The area of a circle is ...

  A = πr² = π(d/2)² = (π/4)d²

The total surface area of the carved cube is ...

  S = 6·(21 cm)² + (π/4)·(21 cm)² = (441 cm²)(6 +π/4)

  S ≈ 2992.36 cm²

The total surface area of the remaining block is about 2992.4 cm².

Answer:

(2646 +110.25π) cm² ≈ 2992.4 cm²

Step-by-step explanation:

Answer:

[tex]1117.01 \mathrm{ft}^{2} \text { is the watered are by the sprinkler. }[/tex]

Option: A

Step-by-step explanation:

A sprinkler sprays water over a distance of (r) = 40 feet

Rotates through an angle of (θ) =  80°

80° convert to radians

[tex]\text { Radians }=80^{\circ} \times\left(\frac{\pi}{180}\right)[/tex]

[tex]\text { Radians }=80^{\circ} \times 0.017453292[/tex]

θ in Radians = 1.396263402

We know that,

Area of sprinkler is [tex]\mathrm{A}=\frac{1}{2} \mathrm{r}^{2} \theta[/tex]

Substitute the given values,

[tex]A=\frac{1}{2} \times 40^{2} \times 1.396263402[/tex]

[tex]A=\frac{(1600 \times 1.396263402)}{2}[/tex]

[tex]\mathrm{A}=\frac{2234.021443}{2}[/tex]

[tex]\mathrm{A}=1117.01 \mathrm{ft}^{2}[/tex]

Area of sprinkler is [tex]1117.01 \mathrm{ft}^{2}[/tex]

Answer:

The answer to your question is the first rain lasted 40 hours and the second rain lasted 30 hours.

Step-by-step explanation:

Data

1st 15 ml/h = x

2nd 30 ml/h = y

Total time = 70 h and 1500 ml

1.- Write 2 equations

                                First rain + second rain = 70 h

                                             x + y = 70       (I)

                                15x + 30 y = 1500       (II)

2.- Solve equations by elimination

Multiply first equation by -15

                               -15x - 15y  = - 1050

                                15x + 30y =  1500

                                  0x + 15y = 450

                                           y = 450 / 15

                                           y = 30 h

                                   x + 30 = 70

                                  x = 70 - 30

                                  x = 40 h

3.- Conclude

The first rain lasted 40 h and the second rain lasted 30 h.

Final answer:

The first rainstorm lasted for 40 hours and the second rainstorm lasted for 30 hours. A system of equations method was used to find the duration of each storm.

Explanation:

Calculating Duration of Rainstorms

Let's denote the duration of the first storm as x hours and the second storm as y hours. The total amount of rain for the first storm would then be 15 mL/hour × x hours and for the second storm 30 mL/hour × y hours. Given that the total duration of the rain is 70 hours, we can set up the following equation: x + y = 70. Additionally, since the total volume of rain is 1500 mL, we have 15x + 30y = 1500.

We can solve this system of equations by multiplying the first equation by 15 to eliminate variable y: 15x + 15y = 1050 and then subtracting this from the second equation: (15x + 30y) - (15x + 15y) = 1500 - 1050, which simplifies to 15y = 450. Thus, y = 30 hours. Finally, we substitute y into x + y = 70 to find x: x = 70 - 30, so x = 40 hours.

Hence, the first storm lasted for 40 hours and the second storm lasted for 30 hours.

Answer:

The arrangement of the given equation in the slope - intercept form are

Step-by-step explanation:

Given:

x + y = 4 and

y - 2x = -5

Slope - intercept form :

[tex]y=mx+c[/tex]

Where,

m is the slope of the line.

c is the y-intercept.

When two points are given say ( x1 , y1 )  and ( x2 , y2)  we can remove slope by

Slope,

[tex]m=\frac{y_{2}- y_{1}}{x_{2}- x_{1}}[/tex]

Intercepts: Where the line cut X axis called X- intercept and where cut Y axis is called Y- intercept.

So, the Slope -intercept form of

x + y = 4   is  [tex]y=-x+4[/tex]

and

y - 2x = -5 is  [tex]y=2x-5[/tex]

Answer:

180000

Step-by-step explanation:

Answer:

Minimum surface area =[tex]70.77 cm^2[/tex]

Step-by-step explanation:

We are given that

Width of container=x cm

Length of container=2x cm

Volume of container=[tex]54 cm^3[/tex]

We have to find the minimum surface areas that this container will have.

Volume of container=[tex]l\times b\times h[/tex]

[tex]x\times 2x\times h=54[/tex]

[tex]2x^2h=54[/tex]

[tex]h=\frac{54}{2x^2}=\frac{27}{x^2}[/tex]

Surface area of container=[tex]2(b+l)h+lb[/tex]

Because the container does not have lid

Surface area of container=[tex]S=2(2x+x)\times \frac{27}{x^2}+2x\times x[/tex]

[tex]S=\frac{162}{x}+2x^2[/tex]

Differentiate w.r.t x

[tex]\frac{dS}{dx}=-\frac{162}{x^2}+4x[/tex]

[tex]\frac{dx^n}{dx}=nx^{n-1}[/tex]

Substitute [tex]\frac{dS}{dx}=0[/tex]

[tex]-\frac{162}{x^2}+4x=0[/tex]

[tex]4x=\frac{162}{x^2}[/tex]

[tex]x^3=\frac{162}{4}=40.5[/tex]

[tex]x^3=40.5[/tex]

[tex]x=(40.5)^{\frac{1}{3}}[/tex]

[tex]x=3.4[/tex]

Again differentiate w.r.t x

[tex]\frac{d^2S}{dx^2}=\frac{324}{x^3}+4[/tex]

Substitute x=3.4

[tex]\frac{d^2S}{dx^2}=\frac{324}{(3.4)^3}+4=12.24>0[/tex]

Hence, function is minimum at x=3.4

Substitute x=3.4

Then, we get

Minimum surface area =[tex]\frac{162}{(3.4)}+2(3.4)^2=70.77 cm^2[/tex]

Answer:

7

Step-by-step explanation:

Answer:

its 14 signs

Step-by-step explanation:

Answer:

0.05x

This is equivalent to 5% of the total amount of sales.

Step-by-step explanation:

Previous Weekly pay function for Owen; f (x) = 0.15x +325-------------------- (1)

Current   Weekly pay function for Owen; g(x) = 0.20x +325--------------------(2)

Change in Owen's Salary plan is equation (2) minus equation (1)

g(x) - f(x) = (0.20x+325)-(0.15x+325)

              =  0.05x

The new change in Owen's salary is 5% of the total amount of sales

Answer:

  A:  x = 20

  C:  x = -9

Step-by-step explanation:

You can solve the inequality and compare that with the offered choices, or you can try the choices in the inequality to see if it is true. Either approach works, and they take about the same effort.

Solving it:

Unfold it ...

  -17 ≤ x -7.5 ≤ 17

Add 7.5 ...

  -9.5 ≤ x ≤ 24.5

The numbers 20 and -9 are in this range: answer choices A and C.

_____

Trying the choices:

A:  |20 -7.5| = 12.5 ≤ 17 . . . . this works

B:  |-10 -7.5| = 17.5 . . . doesn't work

C:  |-9 -7.5| = 16.5 ≤ 17 . . . . .this works

D:  |27-7.5| = 19.5 . . . doesn't work

The choices that work are answer choices A and C.

Answer:

(B) The correct interpretation of this interval is that 90% of the students in the population should have their scores improve by between 72.3 and 91.4 points.

Step-by-step explanation:

Confidence interval is the range the true values fall in under a given confidence level.

Confidence level states the probability that a random chosen sample performs the surveyed characteristic in the range of confidence interval. Thus,

90% confidence interval means that there is 90% probability that the statistic (in this case SAT score improvement) of a member of the population falls in the confidence interval.

Answer:

a)  d = 4,712 cm

b) ∠ 108,52 ⁰

Step-by-step explanation:

The crcular path of the spider has radius = 3 cm

If the spider moves from the fa right side of the circle its start poin of the movement is P ( 3 , 0 ) (assuming the circle is at the center of the coordinate system. And the top of the web (going counterclockwise ) is the poin ( 0 , 3 )

So far the spider has traveled 1/4 of the circle

The lenght of the circle is

L = 2*π*r

The traveled distance for the spider (d) is

d = (1/4 )* 2*π*r       ⇒       d = (1/2)*3,1416*3      ⇒  d = 4,712 cm

And now spider go ahead a new distance of approximately 1 more cm

Therefore the spider went a total of 5.712 cm

Now we know that

πrad  =  180⁰    then   1 rad = 180/π         ⇒   1 rad  = 57⁰

rad = lenght of arc/radius  

so  5,712/3    =  1.904 rad

By rule of three

       1 rad           ⇒    57⁰

     1.904 rad     ⇒     ? x

x = 57 * 1.904      ⇒   108.52 ⁰

So the ∠ 108,52 ⁰