how to unblock your Chromebook plz help l need securly to stay on but get out

The likelihood that the station will need 13 or more calls to determine a winner is 0.5 because each call is independent.

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(a) Let x = 3.12333…. Then 100x = 312.333… and 1000x = 3123.333…, so that

1000x - 100x = 3123.333… - 312.333…

==>   900x = 2811

==>   x = 2811/900 = 937/300

(b) x = 4.38555…   ==>   100x = 438.555… and 1000x = 4385.555…

==>   900x = 3947

==>   x = 3947/900

(c) x = 37.222…   ==>   10x = 372.222…

==>   9x = 335

==>   x = 335/9

(d) x = 16.292929…   ==>   100x = 1629.292929…

==>   99x = 1613

==>   x = 1613/99

(e) x = 2.333…   ==>   10x = 23.333…

==>   9x = 21

==>   x = 21/9 = 7/3

Answer: 135 minutes

Step-by-step explanation:

45/7= 6.42857142857

6.42857142857 x 21 = 135

Answer:

615.8in^3

Step-by-step explanation:

Given data

Radius= 14in

The expression for the area of circle is given as

A= πr^2

Area= 3.142*14^2

Area= 3.142*196

Area= 615.832in^3

Hence the area is 615.8in^3

The curve with polar equation r = 10sin(θ)cos(θ) can be expressed in Cartesian coordinates as \(x^2 + y^2 - 10xy = 0\)

To derive the Cartesian equation, we can use the identities x = r cos(θ) and y = r sin(θ) to substitute for r in the polar equation:

\(x^2 + y^2 = (10sin(\theta)cos(\theta))^{2}\)

Simplifying, we get:

\(x^2 + y^2 = 25x^{2}y^{2}\)

Rearranging, we obtain the final Cartesian equation:

\(x^2 + y^2 - 10xy = 0\)

This equation represents a special type of conic section known as a hyperbola. It has two branches that are symmetric about the line y = x/2. To visualize the curve, we can plot several points using the polar equation and convert them to Cartesian coordinates.

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Answer:

-28-16x and x+9

Step-by-step explanation:

Answer:

1. The equation isn't balanced because there aren't equal numbers of hydrogen or chlorine atoms on both sides of the equation. To correct this, a coefficient of 2 must be placed in front of HCl on the left-hand side of the equation.

Zn+2HCl→ZnCl2+H2

Zn and 2HCl are the reactants; ZnCl2 and H2 are the products. This is a substitution reaction because a free element (Zn) replaces another element (H) in a compound.

2. This is a balanced equation because the same types of atoms and the same numbers of each atom are present on both sides of the equation. 8 S atoms are found on both sides of the equation, and 48 F atoms are found on both sides of the equation. S8 and 24F2 are the reactants; 8SF6 is the product. This is a combination reaction because two substances (S8 and 24F2) undergo a chemical union to form a more complex substance (8SF6).

S8+24F2→8SF6

3. In ferric oxide (Fe3O4), there are 3 atoms of iron (Fe) and 4 atoms of oxygen (O). From the Periodic Table of Elements, we know that the atomic mass of iron is 55.8457 and the atomic mass of oxygen is 15.9994.

Fe3 = 55.8457 × 3 = 167.5371

O4 = 15.9994 × 4 = 63.9976

167.5371 + 63.9976 = 231.5347 (231.535 rounded)

Therefore, the molecular mass of ferric oxide is 231.535.

4. The percentage composition of chlorine in CaCl2 is derived as follows:

The molecular mass of the entire compound is:

Ca = 40.078 × 1 = 40.078

Cl2 = 35.4527 × 2 = 70.9054

40.078 + 70.9054 = 110.9834 (110.983 rounded)

The atomic mass of each element (or its multiple) is divided by the molecular mass of the compound:

Ca = 40.078 ÷ 110.983 = 0.361

Cl2 = 70.9054 ÷ 110.983 = 0.639

Multiplying each by 100 will turn these into percents. Therefore, the percentage composition of chlorine is 63.9%.

5. i. a, c, f, h

ii. e

iii. b, d, g, i

iv. i

Step-by-step explanation:

PENN FOSTER

The given chemical equation represents a type of reaction known as a single replacement (or displacement) reaction. In this reaction, zinc (Zn) displaces hydrogen (H) from hydrochloric acid (HCl) to form zinc chloride (\(ZnCl_2\)) and hydrogen gas (\(H_2\)).

The given chemical equation is:

\(Zn + HCl \rightarrow ZnCl_2 + H_2\)

To determine if the equation is balanced, we need to check if the number of atoms of each element is the same on both sides of the equation.

On the left side (reactant side):

Zinc (Zn) atoms: 1

Hydrogen (H) atoms: 1

Chlorine (Cl) atoms: 1

On the right side (product side):

Zinc (Zn) atoms: 1

Hydrogen (H) atoms: 2 (from\(ZnCl_2 + H_2\))

Chlorine (Cl) atoms: 2 (from \(ZnCl_2\))

The number of hydrogen (H) and chlorine (Cl) atoms is not balanced between the reactants and products. To balance the equation, we need to have the same number of atoms on both sides.

Balanced equation:

\(Zn + 2HCl → ZnCl_2 + H_2\)

Now, the equation is balanced with the following number of atoms on both sides:

On the left side (reactant side):

Zinc (Zn) atoms: 1

Hydrogen (H) atoms: 2

Chlorine (Cl) atoms: 2 (2 from HCl)

On the right side (product side):

Zinc (Zn) atoms: 1

Hydrogen (H) atoms: 2 (from H2)

Chlorine (Cl) atoms: 2 (from ZnCl2)

Identification of reactants and products:

Reactants: Zn (zinc) and HCl (hydrochloric acid)

Products: \(ZnCl_2\) (zinc chloride) and \(H_2\) (hydrogen gas)

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Yes , rotating is  a congruence transformation.

What is a congruence transformation?

A transformation that changes the position of the figure while not dynamical its size or form is termed a congruity transformation.

Main body:

A congruity transformation is that the movement or locating of a form specified it produces a form that is congruent to the initial.

Translations, reflections, and rotations are the three types of congruence transformations. That is, the pre-image and the image are always congruent.

Hence ,rotating is  a congruence transformation.

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Answer:

16

Step-by-step explanation:

Hello, do you remember that result?

For any a and b real numbers,

\((a+b)^2=a+2\cdot a \cdot b+b^2\)

In this example, we have.

\(u^2+8u=u^2+2\cdot 4 \cdot u\\\\\text{ This is the beginning of ... } u^2+8u+4^2=u^2+8u+16\\\\\text{ So, we need to add 16 to make a perfect square}\\\\u^2+8u+\boxed{16}=u^2+2\cdot 4\cdot u +4^2=(u+4)^2\)

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

The squared root of 56 minus the squared root of 189 is -6.26 .

We have given an statement that squared root of 56 minus the squared root of 189  which can be represented in expression as

        \(\sqrt{56} -\sqrt{189}\)                    ..(1)

Prime factorization 56 is given by

    \(\sqrt{56} =\sqrt{2\times2\times2\times7} \\\sqrt{56} =2\sqrt{14} \\\sqrt{56} =2\times3.74\\\sqrt{56} =7.48\)

Prime factorization 189 is given by

    \(\sqrt{189} =\sqrt{3\times3\times3\times7} \\\sqrt{189} =3\sqrt{21} \\\sqrt{189} =3\times4.58\\\sqrt{189} =13.74\)

Putting above values in equation (1) , we get

   \(\sqrt{56} -\sqrt{189}=7.48-13.74\\\sqrt{56} -\sqrt{189}=-6.26\)

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Answer:

25%

Step-by-step explanation:

.25(3,600)=900

3,600+900=4,500

Answer:

25%

Step-by-step explanation:

well first do 4500 minus 3600 which is eqaul to 900. then find out how much 900 is of 3600

900/360=0.25

then multiply it by 100 to get the percentage

0.25*100=25%

The equation of the tangent plane to the surface at the point V is x + y + z = 3.

As per the question given,  

To find the equation of the tangent plane to the surface at the point V, we need to first find the partial derivatives of the surface with respect to u and v, and evaluate them at the point V.

r(u, v) = u^2 i + 3u sin(v) j cos(v) k

∂r/∂u = 2u i + 3sin(v)jcos(v)k

∂r/∂v = 3u cos(v)j(-sin(v))k + 3u sin(v)(-sin(v))j(-cos(v))k

At V, u = 0 and v = π/2, so

r(0, π/2) = 0 i + 0 j + 3k

∂r/∂u(0, π/2) = 0 i + 0 j + 3k

∂r/∂v(0, π/2) = 0 j + 0 i + 0 k

The tangent plane to the surface at V is given by the equation:

r(0, π/2) + ∂r/∂u(0, π/2)(u - 0) + ∂r/∂v(0, π/2)(v - π/2) = 0

Substituting the values, we get:

3k + 0u + 0v - 0i - 0j = 0

Simplifying, we get:

x - 0 + y - 0 + z - 3 = 0

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The median of the data set lies in 20 - 24 minutes, and the range is 24.

The median of the dataset is calculated by applying the following method:

Total frequency of the distribution is calculated as follows;

= 1 + 2 + 6 + 10 + 8

= 27

median = (27 + 1 )/2 = 28/2 = 14

Start counting the frequency and you will notice that the median lies in 20 - 24 minutes.

The range of the data is the difference between the highest and the smallest.

= 29 - 5

= 24 minutes

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Answer:

The most number of layers he can afford is 2

Step-by-step explanation:

We automatically have a fee of 17 so we know we have 13 dollars remaining. Using this information, we know that one layer is 5 dollars which means we can get 2 layers which is equal to 10 dollars which turns our total fee to $27. Hope this helps!

Answer: 960 crayons

Step-by-step explanation:

From the question, we are informed that Mr Andrew bought 15 boxes of crayons at the store to share with his students and that each box contains 64 crayons.

The equation that represents ​c​, the total number of crayons that Mr. Andrew bought will be:

C = 15 × 64

= 960 crayons

Answer:

Step-by-step explanation:

A=117-C

1.25A+.75C=129.75

1.25(117-C)+.75C=129.75

146.25-1.25C+.75C=129.75

-.5C=129.75-146.25

-.5C=-16.50

C=-16.50/-.5

C=33 CHILDREN TICKETS SOLD.

117-33=84 ADULT TICKETS SOLD.

The air speed of a small airplane during the first 25 seconds of takeoff and flight can be modeled by Newton's Second Law of Motion.

According to Newton's Second Law of Motion, the rate of change of the airplane's momentum is equal to the sum of all the forces acting on the airplane. As the plane takes off and accelerates, the thrust of the engines acting in the forward direction causes the plane's momentum to increase. This increase in momentum results in an increase in air speed. The air resistance acting against the motion of the plane is another force that affects the plane's speed. As the plane accelerates, the air resistance increases, and the plane's speed decreases.

In summary, the air speed of a small airplane during the first 25 seconds of takeoff and flight can be modeled by Newton's Second Law of Motion, where the thrust of the engines and air resistance act as forces that influence the plane's air speed.

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Heres a Simple Answer:

1. The one on the left follows the Vertical Line test, while the one on the right doesn't

2. A function is either y = mx+b, or a Nonlinear function. The one on the right is a Parabolic Function becuase it has the x^2 on it. The right one is y^2, which is not a function.

(Not very good, but I gtg so I rushed.)

Answer:

Step-by-step explanation:

What's missing from the original condition.

1000

1001

1002

=====

3003

So the answer is y - 3003

To find a positive number such that the sum of and is as small as possible, we need to use optimization. This problem requires optimization over a closed interval. The given problem is as follows, Let x be a positive number. Find a positive number such that the sum of and is as small as possible.

To find a positive number such that the sum of and is as small as possible, we need to use optimization. This problem requires optimization over a closed interval. The given problem is as follows, Let x be a positive number. Find a positive number such that the sum of and is as small as possible. So, we need to minimize the sum of and . Now, let's use calculus to find the minimum value of the sum.To find the minimum value, we have to find the derivative of the sum of and , i.e. f(x) with respect to x, which is given by f '(x) as shown below:

f '(x) = 1/x^2 - 1/(1-x)^2

We can see that this function is defined on the closed interval [0, 1]. The reason why we are using the closed interval is that x is a positive number, and both endpoints are included to ensure that we cover all positive numbers. Therefore, the problem requires optimization over a closed interval. This means that the minimum value exists and is achieved either at one of the endpoints of the interval or at a critical point in the interior of the interval.

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If x = 7 in, y = 11 in, and z = 6 in, the surface area of the rectangular prism below is 370 in².

In Mathematics and Geometry, the surface area of a rectangular prism can be calculated and determined by using this mathematical equation or formula:

Surface area of a rectangular prism = 2(LH + LW + WH)

Where:

By substituting the given side lengths into the formula for the surface area of a rectangular prism, we have the following;

Surface area of rectangular prism = 2[7 × 11 + (7× 6) + (11 × 6)]

Surface area of rectangular prism = 2[77 + 42 + 66]

Surface area of rectangular prism = 370 in².

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Answer:

I can’t really answer this because you didn’t show a picture. Here’s a thought though. Look up a shape chart on google and work from there. Hope this helps you out

Answer:

88

Step-by-step explanation:

x + 49 = 137 (exterior angle of triangle is equal to sum of its opoosite two interior angles)

x = 137-49

so, x = 88

Correct option is C. The owners of stadiums that bear the names of nowbankrupt companies have a problem deciding what to do about those names.

When a company spends millions to put their company name on a major stadium, controversy often follows as the value of such an expenditure is difficult to track. Major stadium naming deals have also seen another trend: corporate failures.

Throughout the booms and busts of the American economy, many companies who have chosen to embark on a naming rights contract have seen their companies suffer financially or even collapse within several years of a naming deal. Although external, indirectly related factors are certainly at play, the correlation is quite impressive: In many cases naming deals parallel a corporate “boom” spending mentality that contributes to a company’s weakness when a bubble bursts.

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Angle A is located in the third quadrant and solved to be a value of  255.522 degrees.

A quadrant refers to fourth division. In a circle, a quadrant represents a quarter of a circle.

In angle calculations, there are 4 quadrants. The first quadrant is between angles 0 to 90 degrees. The second quadrant is between angles 90 to 180 degrees. The third quadrant is between angles 180 to 270 degrees. The fourth quadrant is between 270 to 360 degrees.

The each quadrant is at 90 degrees interval. and the in angle calculations, the rotation is in anticlockwise direction

cos A = 1/4

where 270°

270 degrees represent the third quadrant. Hence angle A is in the third quadrant

solving for angle A

let cos a = 1/4

a = arc cos ( 1/4 )

a = 75.522 degrees ( in first quadrant )

A = a + 180 degrees

A = 75.522 degrees + 180 degrees

A = 255.522 degrees

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Answer:  –145 is the 25th term in this series where each term is 7 less than the preceding term.

Step-by-step explanation:  Find the difference between the numbers given.

They are decreasing by 7.

The requested term is 25. Subtract -1 . = 24  (n-1)

Multiply 24 × -7 = -168

Add that to to first term

23 + (-168) = the 25th term

–145 is the 25th term in this series where each term is 7 less than the preceding term.