jessica has 56 arcade tickets to give away she gives them all to her 8 friends who share them equally how many tickets does each friend get?

Answer:

The variance of the times between accidents is of 1849 days squared.

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

\(f(x) = \mu e^{-\mu x}\)

In which \(\mu = \frac{1}{m}\) is the decay parameter.

The variance of the exponential distribution is:

\(Var = \frac{1}{\mu^2}\)

Assume that the mean time between accidents is 43 days.

This means that \(m = 43, \mu = \frac{1}{43}\)

What is the variance of the times between accidents?

\(Var = \frac{1}{(\frac{1}{43})^2} = 43^2 = 1849\)

The variance of the times between accidents is of 1849 days squared.

Answer:

10x+6

Step-by-step explanation:

you would times the 2 by the 5 and the 2 by the 3 which gives you 10x+6

a) The dot product of v and -v is -1.

b) The dot product of v + w and v – w is 2v.w

c) The dot product of v – 2w and v + 2w is 4||w||^2 - 4v.w

(a) For any unit vector v, the dot product of v and -v can be found as follows:

v · -v = ||v||||-v||cos(θ) = ||v||||v||cos(180°) = -||v||^2 = -1, where ||v|| represents the magnitude of the vector v and θ is the angle between the vectors.

Since v and -v are unit vectors, their magnitudes are equal to 1, so ||v||^2 = 1. Thus, the dot product of v and -v is -1.

(b) For any unit vectors v and w, the dot product of v + w and v – w can be found as follows:

(v + w) · (v – w) = ||v + w||||v – w||cos(θ) = (||v||||v|| + 2v · w + ||w||||w||)cos(θ) = 2v · w

where θ is the angle between the vectors v + w and v – w, and v · w is the dot product of v and w.

(c) For any unit vectors v and w, the dot product of v – 2w and v + 2w can be found as follows:

(v – 2w) · (v + 2w) = ||v – 2w||||v + 2w||cos(θ) = (||v||||v|| + 4||w||||w|| - 4v · w)cos(θ) = 4||w||^2 - 4v · w

where θ is the angle between the vectors v – 2w and v + 2w, and v · w is the dot product of v and w.

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Answer:

16

Step-by-step explanation:

From the spinner there are 8 possible outcomes (1 to 8)

From the coin, there 2 (heads or tails)

8*2=16

There are 16 possible outcomes, when spinning a spinner numbered from 1 to 8 and tossing a coin.

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

WE need to find the possible outcomes are there when spinning a spinner numbered from 1 to 8 and tossing a coin.

From the spinner, there are 8 possible outcomes (1 to 8)

From the coin, there 2 heads or tails;

8 x 2 = 16

Hence, There are 16 possible outcomes, when spinning a spinner numbered from 1 to 8 and tossing a coin.

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Answer:

1) x= 3i, x= - 3i

2) x= +i\(\sqrt{7}\), x = - i

Step-by-step explanation:

1) x^2+9=0

(x+3i)(x-3i)=0

x= 3i, x=-3i

2) x^2-4=-11

x^2=-7

x= ±i\(\sqrt{7}\)

x= +i\(\sqrt{7}\), x = - i

hope this helps!! :))

The percent of two inches to the length of a ruler is 16.7 percent.

The length of a standard ruler is 12 inches. Therefore, the percent of two inches to the length of a ruler can be calculated as follows:

percent length = 2 / 12 × 100

Hence,

percent length = 200 / 12

percent length = 16.6666666667

percent length = 16. 7 %

Therefore, the percent length of 2 inches to the length of a ruler(12 inches) is 16.7 percent.

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Answer:

Step-by-step explanation:

GIven that:

The set is :  {l, 2, 3, 4.5.6}

To Prove that:

If four numbers are to be chosen , at least one pair of the selected numbers must add up to 7

From the data set given, this set has three pairs of number which can add up to 7. These are:

{1, 6}  i.e 1 + 6 = 7

{2,5}  i.e  2+ 5 = 7

{3,4}  i.e  3 + 4 = 7

So, if four number are chosen from the set that contains six numbers, then that the possibility for such to occur is either by selecting two pairs out of the three pairs or one pair and two numbers.

Thus, in both cases, at least one pair of the selected numbers must add up to 7.

Answer:

1:16

Step-by-step explanation:

Divide both sides by 5 because you need to get one of them to one

\(5/5 =1\\80/5=16\\1:16\)

Answer:

1:16 (or) 1/16 (means same thing)

Step-by-step explanation:

hope this helps!

To approximate the area under the curve y=x^3 from x=3 to x=6, we can use the midpoint rule with four subintervals.First, we need to find the width of each subinterval:delta x = (6 - 3) / 4 = 0.75Next, we can find the midpoint of each subinterval:x1 = 3 + 0.5 * delta x = 3.375

x2 = x1 + delta x = 4.125

x3 = x2 + delta x = 4.875

x4 = x3 + delta x = 5.625Now, we can evaluate the function at each midpoint:y1 = x1^3 = 40.39

y2 = x2^3 = 71.25

y3 = x3^3 = 106.29

y4 = x4^3 = 146.48Finally, we can use the midpoint rule formula to approximate the area:A ≈ delta x * (y1 + y2 + y3 + y4)

= 0.75 * (40.39 + 71.25 + 106.29 + 146.48)

= 267.98Therefore, the approximate area under the curve y=x^3 from x=3 to x=6 is 267.98 square units.

The correct proof of the equation is cos3θ =cos(2θ + θ) =  cos²θ - 3cosθsin²θ (Proved)

Given the trigonometry identity below:

cos3∅=cos²∅-3cos∅sin²∅

We are to prove that both sides of the equation are equal.

cos 3θ = cos(2θ + θ)

Using the double angle formula for cosine, we can expand the first term:

cos(2θ + θ) = cos2θ cos θ - sin2θ sinθ

Since cos2θ = cos²θ - sin²θ

cos(2θ + θ) =  cos²θ - sin²θ - 2cosθsinθsinθ

cos(2θ + θ) = cos²θ - sin²θ - 2cosθsin²θ

On simplifying, we can see that;

cos3θ =cos(2θ + θ) =  cos²θ - 3cosθsin²θ (Proved)

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The normal distribution illustrates that the two scores that applicants must score in between in order to be considered for the positions are 31.71 and 48.29

Population Mean,μ = 40

Population Standard Deviation,σ = 8

X be the random variable follows normal distribution

X ~ N ( μ = 40 ,σ = 8 )

Z =(X - μ)/σ

Now

p(Z < z)= 0.15

p(Z< -1.036 )= 0.15 from z table

i.e z= -1.036

from z score formula

x = μ + zσ

= 40 + -1.036 x 8

= 31.71

and

p(Z > z)= 0.15

p(Z> 1.036 )= 0.15

(from z table )

i.e z= 1.036

From z score formula

x = μ + zσ

= 40 + 1.036 x 8

= 48.29

Therefore, the two scores are 31.71 and 48.29.

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Step-by-step explanation:

We can prove the statement is false by proof of contradiction:

We know that cos0° = 1 and cos90° = 0.

Let A = 0° and B = 90°.

Left-Hand Side:

cos(A + B) = cos(0° + 90°) = cos90° = 0.

Right-Hand Side:

cos(A) + cos(B) = cos(0°) + cos(90°)

= 1 + 0 = 1.

Since LHS =/= RHS, by proof of contradiction,

the statement is false.

\( \\ \\ \)

To find :

\( \\ \\ \)

\( \\ \\ \)

\( \\ \\ \)

Equation formed:-

\( \\ \\ \)

Total distance covered by Pravan = More distance covered by Pravan + distance covered by Brenda.

Therefore:-

\( \\ \\ \)

\( \leadsto \sf38.6 = 20.3 + x\)

Write the equation

\( \\ \\ \)

\( \leadsto \sf38.6 - 20.3 =x\)

When we transfer 20.3 to left side the positive sign (+) will change into negative sign (–)

\( \\ \\ \)

\( \leadsto \sf x = 38.6 - 20.3\)

Arrange the equation because x is always represented at left side.

\( \\ \\ \)

\( \leadsto \boxed {\pmb{\sf x = 18.3}}\star\)

After subtracting 38.6 with 20.3 we will get result as 18.3 .

\( \\ \\ \)

\( \therefore \red{ \underline{ \pmb{\frak{Distance ~ covered ~by ~Brenda~ is ~equal ~to~18.3~kilometers}}}}\)

Part 1

Angles of a quadrilateral add to 360 degrees.

\(7x+65+85+105=360\\\\7x+255=360\\\\7x=105\\\\x=15\)

Part 2

If \(x=15\), then \(7x=105^{\circ}\). Thus, the angles measuring \(7x\) and \(105^{\circ}\) are opposite angles since opposite angles of a kite are congruent.

This means the remaining angles, which are the angles measuring \(65^{\circ}\) and \(85^{\circ}\), are also opposite using the process of elimination.

The equation is  \(g(x) = -\frac{1}{16} (x - 1)^2 + 2\)  Graphing this equation below, we get a parabola that opens downwards and intersects the x-axis at x = -2 and x = 4, with a vertex at (1, 2).

To demonstrate the connection between the two variables, a line or curve is drawn between the plotted points.

To graph function g, we need to find its equation that satisfies the given properties. We know that the y-intercept of g is less than that of f, so we can choose it to be 1. Also, the parabola of g opens downwards and its vertex is between the two x-intercepts, which are at x = -2 and x = 4. We can use these points to find the equation of the parabola in the standard form: g(x) = a(x - h)² + k. Using the fact that g(0) = 1 and the x-intercepts, we can solve for a, h, and k. The resulting equation is:

\(g(x) = -\frac{1}{16} (x - 1)^2 + 2\)

Graphing this equation, we get a parabola that opens downwards and intersects the x-axis at x = -2 and x = 4, with a vertex at (1, 2).

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A linear regression equation was used to predict the number of car accidents a person would experience based on their score on the driving test. The equation predicts that a person with a score of 6 out of 10 would experience 0.1 car accidents.

To do this, they performed a linear regression equation. This equation is used to predict the dependent variable (number of car accidents) based on the independent variable (score on the driving test). To obtain the results, the department of motor vehicles used the equation to calculate the predicted number of car accidents for each possible score on the driving test. Using these results, we can predict that a person with a score of 6 out of 10 would experience 0.1 car accidents. The equation used to make the prediction is Y = a + bX, where Y is the number of car accidents, a is the intercept of the regression line, b is the slope of the regression line, and X is the score on the driving test. To calculate these values, the department of motor vehicles must collect data on driving tests and car accidents and fit a regression line to the data.

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The implicit derivative is given as follows:

dx/dt(x = 4)  = 1/12.

The function in this problem is given as follows:

y = 3x² + 1.

The implicit derivative, relative to the variable t, is given as follows:

dy/dt = 6x dx/dt.

(the derivative of the constant 1 is of zero).

The parameters for this problem are given as follows:

x = 4, dy/dt = 2.

Hence the derivative is obtained as follows:

2 = 6(4) dx/dt

dx/dt = 2/24

dx/dt = 1/12.

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Answer:

The length of segment AC can be found using the formula AB’^2 + BC’^2 = AC’^2.

The length of segment B’C can be found using the formula BC*AC’*sinB.

Answer: 350000

Step-by-step explanation: Let the total sale of noodles by the wholesaler be x.

Given: Commission for the wholesaler is 10%

After receiving a 10% commission the company got rupees 315000.

x-10% of x =315000

x - 10\100 = 315000

x-x\10 = 315000

10x - 10\10 =315000

9x = 3150000

x= 3150000\9

x= 350000

Answer:

A number added by 25

In a problem it is: Ben has m dollars, his Mom gave him 25 dollars how much does Ben have now?

Hope this helps!

The equation of line passing through (-4, -16) and (5, 2) are y = 2x – 8, y - 2 = 2(x - 5) and y + 16 = 2(x + 4)

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

Equations are classified based on degree (value of highest exponents) as linear, quadratic, cubic and so on. Variables can be dependent or independent. Dependent variables depend on other variable while an independent variable do not depend.

The standard form for linear equation is:

y = mx + b

Where m is the slope and b is the y intercept

The equation of line passing through (5, 2) and (-4, -16) is:

y - 2 = [(-16-2)/(-4-5)](x - 5)

y - 2 = 2(x - 5)

y = 2x - 8

y + 16 = 2(x + 4)

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The fraction of the plot of land not occupied by the flowers is 0.0625 or 1/16.

Let's calculate the fraction of the plot of land that is not occupied by the flowers.

Given that initially, 1/4 of the land is allocated for orchids, we have 1 - 1/4 = 3/4 of the land remaining.

After planting the orchids, 2/3 of the remaining land is allocated for roses. Therefore, the fraction of land allocated for roses is (2/3) * (3/4) = 2/4 = 1/2.

Subtracting the land allocated for roses from the remaining land, we have 3/4 - 1/2 = 1/4 of the land remaining.

Finally, 0.75 of the remaining land is allocated for tulips. Therefore, the fraction of land allocated for tulips is 0.75 * (1/4) = 0.1875.

To find the fraction of the plot of land not occupied by the flowers, we subtract the fractions of land allocated for flowers from 1:

1 - (1/4 + 1/2 + 0.1875) = 1 - 0.9375 = 0.0625.

Therefore, the fraction of the plot of land not occupied by the flowers is 0.0625.

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Using the radius of the Ferris wheel and the angle between the two positions, the time spent on the ride when they're 28 meters above the ground is 12 minutes

The radius of the Ferris wheel is 30 / 2 = 15 meters.

The highest point on the Ferris wheel is 15 + 4 = 19 meters above the ground.

The time spent higher than 28 meters is the time spent between the 12 o'clock and 8 o'clock positions.

The angle between these two positions is 180 degrees.

The time spent at each position is 10 minutes / 360 degrees * 180 degrees = 6 minutes.

Therefore, the total time spent higher than 28 meters is 6 minutes * 2 = 12 minutes.

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Answer:

a)13

b)F(x)=1/f(x) = 2/ x^2-3

c) 1/59

Answer:

To simulate one trial of this situation using a random number table, we can follow these steps:Step 1: Assign the digits 00-04 to represent packages not delivered on time and 05-99 to represent packages delivered on time.Step 2: Generate a two-digit random number from the random number table.Step 3: If the generated number falls between 00 and 04, count it as a package not delivered on time. If the generated number falls between 05 and 99, count it as a package delivered on time.Step 4: Repeat steps 2 and 3 until we get a package not delivered on time.The correct option is: Read two-digit numbers. Count the number of packages that are needed in order to find one that was not delivered on time.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

the inscribed angle JKL is half the measure of its intercepted arc

the sum of the arcs in a circle in a circle = 360°

since LK is a diameter the arc KL is equal to the measure of its central angle , that is

arc LK = 180° , then

LJ + JK + KL = 360°

LJ + 74° + 180° = 360°

LJ + 254° = 360° ( subtract 254° from both sides )

LJ = 106°

Then

∠ JKL = \(\frac{1}{2}\) × 106° = 53°

Answer:

\(A = 16\) -- (a)

\(m = 17.5\) -- (b)

Step-by-step explanation:

Given

Variation: Direct

A = 8; m = 20

First, represent the variation.

\(A\ \alpha\ \ m\)

Represent as an equation

\(A = km\)

Make k, make the subject

\(k = \frac{A}{m}\)

A = 8; m = 20; So

\(k = 8/20\)

\(k = 0.40\)

When m = 20, we have:

\(A = km\)

\(A = 0.40 * 40\)

\(A = 16\)

When A = 7, we have:

\(A = km\)

\(7 = 0.40 * m\)

\(m = \frac{7}{0.40}\)

\(m = 17.5\)

Answer:

1000 children

Step-by-step explanation:

Find the total units of adults and children = 2 + 3 = 5

5 units = 5000

1 unit = 5000 ÷ 5 = 1000

100% ÷ 5 units = 20% each unit

3 units = 20% x 3 = 60%

Since we all know that 60% of the people are children and 40% of the children are girls...

60 - 40 = 20%

20% = 1000