Ancient world study guide

The probability that at least 2 people have the same birthday when 27 people are selected at random can be calculated using the complement rule.

Assuming that birthdays are uniformly distributed throughout the year and that there are 365 days in a year (ignoring leap years), the probability that the first person has a unique birthday is 365/365. The probability that the second person has a different birthday is 364/365, and so on. Therefore, the probability that all 27 people have different birthdays is:

P(all different) = (365/365) * (364/365) * ... * (339/365)

To find the probability that at least 2 people have the same birthday, we subtract P(all different) from 1:

P(at least 2 have same birthday) = 1 - P(all different)

Calculating the values, we can find the probability. However, since the calculation involves a large number of fractions, it's not possible to generate the exact answer within the given 100-word limit.

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The angle between the stick and the base of the box is 77. 9 degrees

To determine the angle between the stick and the base, we have to know the trigonometric identities.

These identities are;

From the information given, we have;

sin A = FB/AB

Given that;

GB = 14.5cm

AB = 18. 6cm

substitute for the length of the sides, we have;

sin A = 14.5/18. 6

Divide the values, we have;

sin A = 0. 7796

Find the inverse sine

A = 77. 9 degrees

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Answer: 53

Step-by-step explanation:

The value of the missing length in quadrilateral OLMN would be = 6 units. That is option B.

After the translation of quadrilateral ABCD to the

quadrilateral OLMN, the left form used for the translation didn't change the shape and size of the sides of the quadrilateral. That is;

AB = OL= 6 units

BC = LM

CD = MN

AB = ON

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Answer:

LO = 6 units

Step-by-step explanation:

Side LO corresponds to side AB, and it is given that AB is 6 units. That means that since corresponding sides are congruent, side LO is also 6 units long.

Okay, let's break this down step-by-step:

Katrice's original equation:

3 + 1/3 * x - 10 = 2/3 * x - 2 - 4/3 * x

She combines like terms on the left side:

-7 = - 2/3 * x - 2

She adds 2 to both sides:

-5 = - 2/3 * x

She divides both sides by -2/3:

x = 5

So the correct interpretation of Katrice's solution is:

The solution is x = 5

The other options are incorrect:

There is no solutions - This is incorrect, there is a solution.

The solution is the ordered pair 1,5 - No, the solution is the scalar x = 5, not an ordered pair.

There are infinitely many solutions since x is a whole number - No, the solution is a unique scalar, x = 5.

So in summary, Katrice solved the linear equation by combining like terms, adding to both sides, and dividing both sides by -2/3 to isolate x. The solution is x = 5.

The measure of angle KLF is 59 degrees. However, this answer only holds if KLCF is a straight line.

What is sum of angles ?

The sum of angles is the total measure of all the angles in a given polygon. The formula for finding the sum of angles in a polygon depends on the number of sides or vertices of the polygon.

For example, for a triangle (a polygon with three sides and three vertices), the sum of angles is always 180 degrees. This means that the measure of the three interior angles of a triangle always add up to 180 degrees.

For a polygon with n sides, the sum of angles can be found using the formula:

Sum of angles = (n - 2) * 180 degrees


According to the question:

If we assume that KLCF is a straight line, then we can use the fact that the sum of the angles in a straight line is 180 degrees to find the measure of angle KLF.

We have:

m(KLCF) = m(KLC) + m(KLF)

Since KLCF is a straight line, m(KLCF) = 180 degrees. We don't know the measure of either angle KLC or angle KLF, but we can use the given expressions for their measures to set up an equation:

m(KLC) = 9x + 4

m(KLF) = 4x + 7

Substituting these expressions into the equation for the sum of angles in a straight line, we get:

180 = (9x + 4) + (4x + 7)

Simplifying this equation, we get:

180 = 13x + 11

Subtracting 11 from both sides, we get:

169 = 13x

Dividing both sides by 13, we get:

x = 13

So the value of x is 13.

To find the measure of angle KLF, we substitute x = 13 into the expression for m(KLF):

m(KLF) = 4x + 7 = 4(13) + 7 = 59 degrees

Therefore, the measure of angle KLF is 59 degrees. However, this answer only holds if KLCF is a straight line.


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The transformation rule, that can be used to transform the figure P to figure P' is (x, y) → (-x , -y)

Transformation rule:

Transformation rue defines an operation that moves, flips, or changes a shape called the preimage to create a new shape called the image.

Given,

Here we have to find the transformation rule that can be used to transform the figure P to figure P'.

In order to find the rule of transformation from P to P',

First we have to identify the point of the figure,

Here the point of the figure are listed as,

P = (2,2), (3,4), (6,4), (6,2)

Now, we have to identify the point for the figure P' through the given graph, then we get he value of P' as,

P' = (-2,-2), (-6,-2), (-6,-4), (-4,-3)

While we comparing these point we have identified that, the sign of each point have change, but the order of x and y is not change,

So, the transformation rule used here is (x, y) → (-x, -y).

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Yes, the equation of velocity is rearranged to find the area under the curve.

The equation of velocity in general is v = d/t

where v = velocity, d = distance, and t = time.

We rearrange this equation to create an equation for distance and the equation of distance determines the area under the curve.

Our motive is to isolate the variable whose equation we want to create. So, in this case, isolate 'd' and move all other variables to the other side.

1. Multiply both sides by t

v × t = d/t × t

2. Cancel the t where appropriate

v × t = d

3. We get the equation for d

d = v × t

Now, this equation is used to find the area under the curve.

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Answer:

square root of 30 is 30

because it comes in a point =5.477225575

Answer:

10 z's

Step-by-step explanation:

5x's=4y's = 15x's=12y's

12y's = 5z's

15x's = 12y's = 5z's so 15x's = 5z's

multiply both by 2

30x's = 10 z's

Answer:

Multiply the first equation by 5 and the second equation by 2. Then add.

Multiply the first equation by 2 and the second equation by 5, then subtract.

Step-by-step explanation:

Given

\(- 2x + 5y = -15\)

\(5x + 2y = -6\)

Required

Steps to solve using elimination method

From the list of given options, option 2 and 3 are correct

This is shown below

Option 2

Multiply the first equation by 5

\(5(- 2x + 5y = -15)\)

\(-10x + 25y = -75\)

Multiply the second equation by 2.

\(2(5x + 2y = -6)\)

\(10x + 4y = -12\)

Add

\((-10x + 25y = -75) + (10x + 4y = -12)\)

\(-10x + 10x + 25y +4y = -75 - 12\)

\(29y = -87\)

Notice that x has been eliminated

Option 3

Multiply the first equation by 2

\(2(- 2x + 5y = -15)\)

\(-4x + 10y = -30\)

Multiply the second equation by 5

\(5(5x + 2y = -6)\)

\(25x + 10y = -30\)

Subtract.

\((-4x + 10y = -30) - (25x + 10y = -30)\)

\(-4x + 25x + 10y - 10y= -30 +30\)

\(21x = 0\)

Notice that y has been eliminated

Answer:

How many solutions does the system have?

✔ exactly one

The solution to the system is

(

⇒ 0,

⇒ -3).

Step-by-step explanation:

the next two parts

The correlation between age and physical fitness, and the relationship between the number of hours spent studying and stress levels.

A negative correlation between two variables is observed when an increase in the value of one variable results in a decrease in the value of the other variable.

In other words, as one variable goes up, the other variable tends to go down. There are several associations between two variables that are likely to have a negative correlation.
One of the most common examples of negative correlation is the relationship between the price of a product and its demand.

When the price of a product increases, the demand for it tends to decrease.

This is because people are less likely to buy the product if it is too expensive.

Similarly, the correlation between age and physical fitness is also likely to be negative.

As a person grows older, their physical fitness tends to decline.
Another example of negative correlation is the relationship between the number of hours a person spends studying and their stress levels.

As the number of hours a person spends studying increases, their stress levels tend to decrease.

Conversely, as the number of hours a person spends studying decreases, their stress levels tend to increase.
In conclusion, there are many associations between two variables that are likely to have a negative correlation.

These include the relationship between the price of a product and its demand, the correlation between age and physical fitness, and the relationship between the number of hours spent studying and stress levels.

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Answer:

a=9

Step-by-step explanation:

a^2+b^2=c^2

a^2+5.6^2=10.6^2

a^2+ 31.36=112.36

-31.36           -31.36

a^2=81

a=\(\sqrt{81}\)

a=9

Answer:

9in

Step-by-step explanation:

is a right triangle so you can use Pythagorean Th.

(10.6)²= (5.6)² + a², subtract (5.6)² from both sides

(10.6)²- (5.6)² =  a²

81 =a², squareroot both sides

√81= √a²

±9 = a we only consider the positive solution because we use it for measurements so a=9

The relative frequency is the proportion of the total numbers in a data set corresponds to a specific class interval and hence summing over all the relative frequencies must add up to 1, or 100%.

The frequency distribution table is made by building the class intervals of the raw data set, specifically when too many values are occurring many times; we group similar values in the same category, according to a pre-determined range of values. It is a two-column table in which the first column consists of class intervals and the second consists of the frequency corresponding to each interval.

The frequency distribution is made when the raw data is large and when the same number is repeated many times, that is where the concept of frequency comes into play.

Since, the frequency is the count of specific numbers in a data set, the sum of all frequencies corresponding to every class interval has to be the total number of values in the data set.

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The given question is incomplete, complete question is:

What is the sum of all frequencies in a frequency distribution? and why is the sum of all relative frequencies equal to 1?

Answer:

Degrees = Radians x 180/π

or

Degrees = 57.2958  x radians

Step-by-step explanation:

1 radian = 180/π degrees

1 radian = 57.2958 degrees

Multiply radians by this factor of 57.2958  to get the equivalent measure in degrees

π radians = 180°

2π radians = 360° which is the number of degrees in a circle

For anything greater than 2π radians you will have to subtract 360°

For example, 7 radians using the formula is 7 x (57.2958  ) ≈ 401.07°

But this still falls in the first quadrant, so relative to the x-axis it is
401.07 - 360 = 41.07°

The required explanation for log of base 10 is described.

The ability of logarithms to solve exponential problems is a large part of their strength. Examples of this include sound (measured in decibels), earthquakes (measured on the Richter scale), starlight brightness, and chemistry (pH balance, a measure of acidity and alkalinity).

The distinction between log and ln is that log is expressed in terms of base 10, while ln is expressed in terms of base e. As an illustration, log of base 2 is denoted by log2 and log of base e by loge = ln (natural log).

The logarithm can be rewritten using the general rule. The common logarithm, which has a base of 10 always, is what you're dealing with when the log has no base.

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Reason:

The tree is already 48 inches tall. We add on 3x to represent the idea the tree is growing 3 inches per month. Therefore, the total height is 48+3x or 3x+48 inches.

Let's say x = 5 months have elapsed as an example.

The tree would have grown 3*x = 3*5 = 15 inches to get 48+15 = 63 inches tall. In other words, y = 3x+48 will have y = 63 when x = 5.

To arrange the given times from shortest to longest, let's convert all the times to a common unit for easier comparison. Let's convert all the times to seconds (s). The correct arrangement from shortest to longest time is: 7.48 x \(10^{-4}\)µs, 3.44 x \(10^{-3}\) µs, 1.55 µs

1 ns = 10^-9 s (nanoseconds to seconds)

1 ps = 10^-12 s (picoseconds to seconds)

1 ms = 10^-3 s (milliseconds to seconds)

3.44 ns = 3.44 x 10^-9 s

7.48 x 10^2 ps = 7.48 x 10^-10 s

1.55 x 10^-3 ms = 1.55 x 10^-6 s

Arranging the times from shortest to longest:

7.48 x 10^-10 s (ps)

3.44 x 10^-9 s (ns)

1.55 x 10^-6 s (ms)

Therefore, the arranged times from shortest to longest are:

7.48 x 10^-10 s (ps) < 3.44 x 10^-9 s (ns) < 1.55 x 10^-6 s (ms)

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- - - - - - - - - - - - - - - - - - - - - - - - - - -

If 'he' wins 5 out of 13 games, that's an immediate ratio of 5:13.

- - - - - - - - - - - - - - - - - - - - - - - - - - -

Let's call him Max :)

Okay, now for the math.

I'm going to try a number line- but first, we have to know how many times 13 goes into 78.

- - - - - - - - - - - - - - - - - - - - - - - - - - -

78 / 13 = 6

So now we multiply the ratio (5:13) by six...

30:78

That's the answer!

- - - - - - - - - - - - - - - - - - - - - - - - - - -

Good luck!

~pinetree

The slope of the graph will be changed. The graph is still a straight line, But it becomes steep.

The slope, m, is a measure of how steep a line is. Sometimes, the gradient of a line is referred to as its slope. A line's y-intercept, ab, denotes the y-coordinate of the location where the line's graph crosses the y-axis.

Slope of a Line :

A line's slope in mathematics is defined as the ratio of the change in the y coordinate to the change in the x coordinate.

Both the net change in the y-coordinate and the net change in the x-coordinate are denoted by y and x, respectively.

As a result, m = change in y/change in x = y/x is the formula for the change in y-coordinate with respect to the change in x-coordinate.

where "m" represents a line's slope.

The line with m as the slope, m and c as the y-intercept is the graph of the linear equation y = mx + c. The values of m and c are real integers in the slope-intercept form of the linear equation.

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The system has infinitely many solutions.

The given system of equations can be represented as an augmented matrix. To solve the system, we need to find the reduced row-echelon form of this matrix. After performing row operations and reducing the matrix, we obtain a simplified form where the leading entries of each row are 1, and all other entries in the same column are zero.

In this case, the augmented matrix reduces to:

The first three columns of the reduced row-echelon form are represented by the numbers on the left, right above the vertical bar. In this case, the blanks are filled with 1 0 2.

Now, to determine the number of solutions, we examine the reduced row-echelon form. The system has infinitely many solutions if and only if there is a row of the form 0 0 0 | b, where b is nonzero. In this case, the last row satisfies this condition (0 0 0 | 0), indicating that the system has infinitely many solutions.

To further understand this, consider that the third column represents the coefficient of the variable z. The fact that the third column has no leading 1 indicates that the variable z is a free variable and can take on any value. The variables x and y, represented by the first and second columns respectively, are dependent on z and can also take on any values.

Therefore, the system has infinitely many solutions, with the values of x, y, and z being dependent on each other. Any values assigned to x and y, along with any value chosen for z, will satisfy the system of equations.

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Answer:

y=8x+5

Step-by-step explanation:

y=mx+b is slope intercept form

m stands for Slope = 8

b is y intercept = +5

plug it in and you get y=8x+5

The value is "λ = 77/75".

Given two lines asx−1=(y+1​)/2 =(z−1​)/λ and x+1=y−1=z

Now, let's solve the equations as follows:

x - 1 = (y + 1) / 2 = (z - 1) / λ => (1)

y - 1 = x + 1 = z => (2)

From (2), we have

y - 1 = x + 1 --------------(3)and

z = x + 1-------------------------(4)

Substitute (3) and (4) in (1), we have

y - 1 = (x + 1) / 2 = (x + 1) / λ

=> λ (y - 1) = x + 1

=> λy - x = λ + 1 ------------(5)

Now, substituting (3) in (5), we get

λ (y - 1) = y + 2

=> λy - y = λ + 2

=> (λ - 1) y = λ + 2

=> y = λ + 2 / λ - 1 -----------------(6)

Substitute (6) in (3), we get

λ + 2 / λ - 1 - 1 = x

=> λ + 2 - λ + 1 / λ - 1 = x

=> λ + 3 / λ - 1 = x -------------(7)

Substitute (7) in (4), we have

z = λ + 4 / λ - 1 ------------------(8)

Now, since both lines intersect each other, they must coincide.

Hence their direction ratios must be proportional.

Therefore, we can say

λ + 4 / λ - 1

= 150λ + 4

= 150λ - 150

= -4

=> λ = 154/150 = 77/75

Therefore, λ = 77/75.

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Answer:

2

Step-by-step explanation:

Since Barry is going to post-secondary school for three years, a personal line of credit is vital to pay for his education.

It should be noted that when a individual collects a loan, the person will have to pay it back with an extra amount as interest.

In this case, it's important for him to use his personal line or credit rather than collecting a student loan from people. This isn't good in this scenario.

Therefore, since Barry is going to post-secondary school for three years, a personal line of credit is vital to pay for his education.

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Answer:

Let x be the annual salary.

Then 10% of x+250 equates 0.1(x+250).

Since the bonus equates $5000, then we get the equation:

The annual salary of Ayesha is 49750

Step-by-step explanation:

Answer:

x=49750

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

0.1(x+250)=5000

(0.1)(x)+(0.1)(250)=5000(Distribute)

0.1x+25=5000

Step 2: Subtract 25 from both sides.

0.1x+25−25=5000−25

0.1x=4975

Step 3: Divide both sides by 0.1.

0.1x

0.1

=

4975

0.1

x=49750

We need to calculate the 4%

The raise will be $1614.44

The cashier gave Mary an amount of  $49.64 in change.

Mary's mom gave her $100.00 to go shopping.

She spent $22.65 on a shirt and $33.31 on a skirt. She had a coupon for 10% off. Mary's total expenditure can be calculated by adding the cost of the skirt and the shirt:

Shirt + Skirt = $22.65 + $33.31 = $55.96

The cost of the items with the discount is the Total cost after discount

= $55.96 − 10% of $55.96 = $55.96 − $5.596 = $50.36

Since Mary was given $100.00 by her mother, she has to subtract the total amount she spent from the total she was given.

This will give us her total change:

$100.00 − $50.36 = $49.64

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