What is the value of y? 18+2y+4+10+2x+10

Answer:

The radius of a sphere is 2 millimeters

The surface area of a sphere is 50.24 square millimeters.

The circumference of the great circle of a sphere is 12.56  millimeters.

Step-by-step explanation:

Verify each statement

case A) The radius of a sphere is 8 millimeters

The statement is false

we know that

The volume of the sphere is equal to

[tex]V=\frac{4}{3}\pi r^{3}[/tex]

we have

[tex]V=100.48/3\ mm^{3}[/tex]

[tex]\pi =3.14[/tex]

substitute and solve for r

[tex]100.48/3=\frac{4}{3}(3.14)r^{3}[/tex]

[tex]r^{3}=(100.48)/(4*3.14)[/tex]

[tex]r=2\ mm[/tex]    

case B) The radius of a sphere is 2 millimeters

The statement is True

(see the case A)

case C) The circumference of the great circle of a sphere is 9.42 square millimeters  

The statement is false

The units of the circumference is millimeters not square millimeters

The circumference is equal to

[tex]C=2\pi r[/tex]

we have

[tex]r=2\ mm[/tex]  

[tex]\pi =3.14[/tex]

substitute

[tex]C=2(3.14)(2)[/tex]

[tex]C=12.56\ mm[/tex]

case D) The surface area of a sphere is 50.24 square millimeters.

The statement is True

Because

The surface area of the sphere is equal to

[tex]SA=4\pi r^{2}[/tex]

we have

[tex]r=2\ mm[/tex]  

[tex]\pi =3.14[/tex]

substitute

[tex]SA=4(3.14)(2)^{2}[/tex]

[tex]SA=50.24\ mm^{2}[/tex]

case E)  The circumference of the great circle of a sphere is 12.56  millimeters.  

The statement is true

see the case C

case F) The surface area of a sphere is 25.12 square millimeters

The statement is false

because the surface area of the sphere is [tex]SA=50.24\ mm^{2}[/tex]

see the case D

Answer:

B, D,E

Step-by-step explanation:

Answer:

[tex]8\frac{2}{8}[/tex]

Step-by-step explanation:

x = number of granola bars

[tex]\frac{3}{4} + 7\frac{1}{2} = \frac{6}{8} + 7\frac{4}{8} = 7\frac{10}{8} = 8\frac{2}{8}[/tex] = x[/tex]

Solve the equation

Answer:

Step-by-step explanation:

Circumference of the wheel = (pi)d = 45*3.14 = 141.3 inches

----

Distance traveled in inches: 5*141.3 = 706.5 inches

---

Distance traveled in feet: 706.5/12 = 58.875 feet

Answer:

  21.97 in

Step-by-step explanation:

Use the formula for the volume of a cone, fill in the given information, and solve for the height.

  V = (1/3)πr²h

  23 in³ = (1/3)(3.14)(1 in)²h . . . . . . . . with given numbers

  3·23 in³/(3.14 in²) = h ≈ 21.97 in . . . . . divide by the coefficient of h

Answer:

21.97 inches

Step-by-step explanation:

If a cone-shaped water cup holds 23 cubic inches and has a radius of 1 inch, the height of the cup is 21.97 inches.

Round your answer to the nearest hundredth.

Answer:

0.60b + 0.30w = 150; 60 + 0.30w = 150

Step-by-step explanation:

Answer:

C. 0.60b + 0.30w = 150; 60 + 0.30w = 150

Step-by-step explanation:

Answer:

  4/9

Step-by-step explanation:

The easiest segment to work with is BC, since the y-values are the same for coordinates B and C and for B' and C'.

The length of BC = 9 -(-9) = 18.

The length of B'C' = 7 -(-1) = 8.

The scale factor is B'C'/BC = 8/18 = 4/9.

Answer:

  b:  10% decay

Step-by-step explanation:

Expressed as a percentage change, the growth is usually the value of the base of the exponential function after 1 has been subtracted. That result is expressed as a percent:

  0.9 - 1 = -0.10 = -10% . . . . . 10% decay

_____

The "t/12" exponent means this is the decay that is experienced over 12 units of time. This might be the annual decay, where t is expressed in months, for example.

Answer:

B and D.

Step-by-step explanation:

B  This is a fair method. There is an equal chance  for all 3 people because picking one of the three is random.

D. I can't see all of it  but it looks like it will be  ' if the number is 5 or 6 Elena will bathe the dog. This is fair because the probabilities are all 1/3.

Method D is a fair method because the probability of each is equal.

Determining the proper option, acquiring evidence, and exploring various options are all steps in the decision-making process.

Ana, Mateo, and Elena are arguing about who has to give the dog a bath.

Then a fair decision will be

A. Roll a number cube. If the number rolled is 2 or 4, Ana bathes the dog. If the number is odd, Elena bathes the dog. If it lands on any other number, Mateo bathes the dog.

This is not a fair method because the probability of each is not equal.

B. Put each person's name on a separate piece of paper in a bag Randomly draw a name. The person whose name is chosen bathes the dog.

This is not a fair method because the number of pieces of paper is not given.

C. Flip a coin twice. If both tosses are heads, Ana bathes the dog. If one is headed and one is tail, Mateo bathes the dog. If both are tails, Elena bathes the dog.

This is not a fair method because the probability of each is not equal.

D. Roll a number cube. If the number rolled is 1 or 2, Ana bathes the dog. If the number is 3 or 4, Mateo bathes the dog. If the number​ rolled is 5 or 6, Elena bathes the dog.

This is a fair method because the probability of each is equal.

Then the correct option is D.

More about the decision-making link is given below.

https://brainly.com/question/3369578

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[tex]\bf (\stackrel{x_1}{-2}~,~\stackrel{y_1}{5})~\hspace{10em} slope = m\implies 6 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-5=6[x-(-2)]\implies y-5=6(x+2) \\\\\\ y-5=6x+12\implies y=6x+17\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]

Answer:3 minute

Step-by-step explanation:

Sakura speaks hungarian =150 words per minute

Sakura speaks polish =190 words per minute

and it is given she speaks 270 more words in polish than in hungarian

She speaks for a total of 5 minutes

let she speaks hungarian for t mins

therefore [tex]150\times t+270=190\left ( 5-t\right )[/tex]

t=2 mins

therefore sakura speaks hungarian for 2 mins and polish for 3 mins

Sakura speaks hungarian for 2 mins and polish for 3 mins

Answer:

  y = -2.5

Step-by-step explanation:

For such a problem as this, you can replace all sine or cosine functions with their midline value of 0. Then you have ...

  f(x) = 0 -2.5

which simplifies to ...

  f(x) = -2.5

You can leave the equation like this, or write it as ...

  y = -2.5

_____

Perhaps you can see that the midline is the value of any constant added to a sine or cosine function.

Answer: y=-2.5

Step-by-step explanation:

Answer:

(x^12y)

Step-by-step explanation:

= (x^4y)^3

= (x^12y)

Answer:

The simplified form of given expression is  x¹²y³

Step-by-step explanation:

Points to remember

Identities

(xᵃ)ᵇ = xᵃᵇ

xᵃ * xᵇ = x⁽ᵃ ⁺ ᵇ⁾

To find the simplified form

It is given that, (x⁴y)³

By using the above identities we can write (x⁴y)³ as,

(x⁴y)³ =  (x⁽⁴ * ³ ⁾ * y³

 = x¹² * y³

 = x¹²y³

Therefore the  simplified form of given expression is  x¹²y³

Step-by-step explanation:

[tex] f(x) = \log_a x [/tex]

[tex] \dfrac{f(x + h) - f(x)}{h} = [/tex]

[tex] = \dfrac{log_a(x + h) - \log_a x}{h} [/tex]

[tex] = \dfrac{log_a \dfrac{x + h}{x}}{h} [/tex]

[tex] = \dfrac{1}{h}log_a ( 1 + \dfrac{h}{x} ) [/tex]

[tex] = log_a ( 1 + \dfrac{h}{x} )^{\frac{1}{h}} [/tex]

Answer:

.6094

Step-by-step explanation:

Answer:

0.000052

1 nanometer = .000000001 meters

.000000001 x 52000 = 0.000052

To convert 52,000 nanometers to meters, divide by the conversion factor of 1,000,000,000 nanometers per meter, resulting in a thickness of 5.2 x 10-8 meters in standard form.

To convert the thickness of a piece of thread from nanometers to meters, we need to use the conversion factor that 1 meter equals 1,000,000,000 nanometers, or 1 m = 109 nm.

Using this conversion factor, we can set up the following calculation:

Thickness in meters = Thickness in nanometers \/ Conversion factor

Thickness in meters = 52,000 nm \/ (109 nm/m)

Thickness in meters = 52,000 nm \/ 1,000,000,000 nm/m

Thickness in meters = 0.000000052 m or 5.2 x 10-8 meters when expressed in standard form.

Answer:

Step-by-step explanation:

A man steps out of a plane at 4,000m of height above the ground.The point at which he jumps out of the plane would make a good reference point. However, if his acceleration is going to change as a result of him opening his parachute 2000m above the ground, a good reference point would be there. Keep in mind though, that his velocity at that instant would need to be known for it to be useful- otherwise the airplane reference point would be just as good with appropriate modeling....

Answer:4000m easy !!

Answer:

  see below

Step-by-step explanation:

The formula for the sum of an infinite geometric series with first term a1 and common ratio r (where |r| < 1) is ...

  sum = a1/(1 -r)

Applying this to the given series, we get ...

a. sum = 5/(1 -3/4) = 5/(1/4) = 20

b. sum = d/(1 -1/t) = d/((t-1)/t) = dt/(t-1)

_____

The derivation of the above formula is in most texts on sequences and series. In general, you write an expression for the difference of the sum (S) and the product r·S. You find all terms of the series cancel except the first and last, and the last goes to zero in the limit, because r^∞ → 0 for |r| < 1. Hence you get ...

  S -rS = a1

  S = a1/(1 -r)

The best predicted value of y for x = 5 is 27.

A regression equation is a mathematical model that represents the relationship between a dependent variable and one or more independent variables. It expresses the linear or nonlinear association between these variables and is derived from statistical methods like linear regression analysis.

To predict the value of y for x = 5 using the regression equation, you can substitute x = 5 into the equation y = 5x + 2:

y = 5(5) + 2 = 27

Therefore, the predicted value of y for x = 5 is 27.

The best predicted value of [tex]\( y \) for \( x = 5 \) is \( y = 27 \).[/tex]

To find the best predicted value of [tex]\( y \) for \( x = 5 \),[/tex]we substitute [tex]\( x = 5 \)[/tex] into the regression equation:

[tex]\[ y = 5x + 2 \] \[ y = 5(5) + 2 \] \[ y = 25 + 2 \] \[ y = 27 \][/tex]

To reconcile this discrepancy, if we assume that the provided value of [tex]\( y = 18.3 \)[/tex] corresponds to [tex]\( x = 5 \),[/tex] then we would set the regression equation equal to 18.3 and solve for \( x \):

[tex]\[ 18.3 = 5x + 2 \] \[ 16.3 = 5x \] \[ x = \frac{16.3}{5} \] \[ x = 3.26 \][/tex]

Find the perimeter of the yard ( the distance around the yard).

A rectangle has two sides of each dimension.

The perimeter is 20 + 20 + 45 + 45 = 130 feet.

Now multiply the total feet by the cost per foot:

130 feet x 25 per foot = $3,250 total.

Danny needs to spend on his yard $3250 to fencing.

The rectangle is a geometrical figure in which opposite sides are equal.

The angle between any two consecutive sides will be 90 degrees.

Area of rectangle = length × width.

Perimeter of rectangle = 2( length + width).

Length of fence = Perimeter of his yard(rectangle)

Perimeter of rectangle = 2( length + width).

Perimeter of fence =2 ( 20 + 45 )

The perimeter of fence =130 foot.

Now

Cost = $25 per foot

So,

Cost of 130 feet at the rate of  $25 per foot

⇒ 130 × 25 = $3250

Hence, Danny needs to spend on his yard $3250 to fencing.

For more about rectangles,

https://brainly.com/question/15019502

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Answer:

  A:  -2

Step-by-step explanation:

You want some factor k such that k(5x) +(10x) = 0. That is, 5k+10 = 0. The solution to this is k=-2, corresponding to selection A.

k = -2 for sure

I normally multiply 5x+10y=15 by -2 to cancel out the x's.

This is because you can only solve the problem if one of your variables is canceled out and then you solve!

Answer:

  f(x) = -2|x-2| +4

Step-by-step explanation:

Step 1: recognize this as an inverted, scaled, and translated absolute value function.

Step 2: identify the scale factor as 2, because each section has a "rise" of 2 for each "run" of 1. The scale factor is -2 because the function is inverted (reflected across the x-axis).

Step 3: identify the vertex* as (2, 4).

Step 4: Use the scale factor and translation information to make the transformation ...   (let abs(x) represent the absolute value function)

  f(x) = (scale factor)×abs(x -horizontal shift) + (vertical shift)

  f(x) = -2|x -2| +4

_____

* The vertex is an identifiable point on the graph of this function. Knowing how the vertex is translated tells you how the whole function is translated. In general, you want to use an identifiable point (a turning point, point of symmetry, extreme point, whatever) when you're trying to determine the translation. For some functions, like a line, there is no specific identifiable point, so determining any specific translation is difficult or impossible.

_____

Comment on writing functions from graphs

One of the reasons for studying different functions is so you can learn to recognize their shape, and associate a formula and certain properties with that shape.

_____

The attached graph shows the parent absolute value function in blue and the transformed function f(x) in red.

Answer:

20 seconds

Step-by-step explanation:

Given:

Position of car = s(t) = 60t-1.5t^2

The speed is the change in position.

So,

[tex]Speed\ of\ car=\frac{ds}{dt} = \frac{d}{dt} (60t) -\frac{d}{dt} (1.5t^2)\\=60-2t(1.5)\\=60-3t[/tex]

When the car will stop, the speed will be zero.

[tex]60-3t=0\\3t=60\\t = \frac{60}{3}\\ t=20[/tex]

Therefore, the car will stop after 20 seconds of applying the break ..

Observational study.

------APEX

Answer:

Step-by-step explanation:

The choices for this question are

a. Double-blind study

b. Experiment

c. Sample survey

d. Observational study

The right answer would be d. Observational study, because this type of study is defined as an empirical and non-experimental research where all information is obtained by observation. When we apply this study, we try to find a cause-effect relation by observing the phenomenon as it naturally happens, that is, without interfering with the course of events like experimental investigations do.

So, in this case, Matilda is just observing, without altering anything that could influence the birds. She just sits observe and recover information, that's an observational study.

Therefore, the right answer is d.

Answer:

  D)  33

Step-by-step explanation:

The sum of the lengths of the segments is equal to the overall length:

  (3x -5) + 8 = 4x -7

  10 = x . . . . . . . . . . . . add 7-3x to both sides

Then the overall length is ...

  MO = 4·10 -7 = 33

Answer:

Step-by-step explanation:

(3x -5) + 8 = 4x -7

10 = x what you wnat to do is  add 7-3x to both sides

= 4·10 -7 = 33

and that should be your answer 33

The zeros of the polynomial function f(x) = x^3 + x^2 + 20x are 0, -5, -4.

The zeros of a polynomial function are the values of x that make the function equal to zero.

We are given that one zero of the polynomial function f(x) = x^3 + x^2 + 20x is x = 0.

To find the other zeros, we can use polynomial long division or synthetic division to factor out x = 0 and find the remaining quadratic equation.

Factoring the quadratic equation, we find that the zeros are x = -5 and x = -4.

Therefore, the correct answer is 0, -5, -4.

Final answer:

The zeros of the polynomial function f(x) = x^3 + x^2 + 20x are 0, -5, and -4.

Explanation:

The zeros of a polynomial function are the values of x that make the function equal to zero. Given that one zero of the polynomial function f(x) = x^3 + x^2 + 20x is x = 0, we need to find the other zeros. To do this, we factor the polynomial using synthetic division or long division. In this case, the factored form of the polynomial is f(x) = (x)(x + 5)(x + 4). Therefore, the zeros of the polynomial function are 0, -5, and -4.

Answer:

$30,000.

Step-by-step explanation:

Wave Corporation began the current year with a retained earnings balance of $25,000.

Depreciation expense was of $5000

During the current year, the company earned net income of $15,000

Also gave cash dividends of $5,000.

So, year end retained earnings will be :

Year end retained balance = total net income minus net losses and dividends.

[tex]25000-5000+15000-5000=30000[/tex] dollars

The answer is $30,000.

Answer:

The answer is

D.

GD/MJ = DE/JK

Answer:

GD/MJ = DE/JK

Step-by-step explanation:

This answer is correct because GD and MJ are similar sides and DE and JK are similar sides as well

Answer:

the music is both dubstep and trance

Answer:

  10 weeks

Step-by-step explanation:

Let w represent the number of weeks Anthony will be saving. Then he wants ...

  165 + 40w = 500 +0.10×500

  40w = 385 . . . . . subtract 165 and simplify

  w = 9.625 . . . . . . divide by 40

It will take Anthony 9.625 ≈ 10 weeks to save that amount.

[tex]|\Omega|=16\cdot15=240\\|A|=6\cdot10=60\\\\P(A)=\dfrac{60}{240}=\dfrac{1}{4}[/tex]

He's wrong.