rashaad has a deck that measurea 12 feet by 10 feet. He wants to increase each dimension by equal lengths so that its area is tripled.By how much should he increase each dimenson.

Answer:

The slope of the line is 1/2.

The probabilities are given as follows:

a) Tails and odd number: 1/4.

b) Tails or odd number: 3/4.

c) Tails or odd number, but not simultaneously: 1/2.

The probability of an event in an experiment is calculated as the number of desired outcomes of the experiment divided by the number of total outcomes of the experiment.

For each event, the probabilities are given as follows:

Hence the probability of both events is of:

p = 1/2 x 1/2 = 1/4.

The or probability is composed as follows:

Hence the ´probability is of:

3 x 1/4 = 3/4.

Removing the simultaneous event, the probability is of:

3/4 - 1/4 = 2/4 = 1/2.

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a. distribution of X is  (257,45)

b. Probability that a randomly hit fly ball travels less than 284 feet is 0.2257

c. The 70th percentile for the distribution of distance of fly balls is 290 feet.

What do you mean by normal distribution?

In statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable.

It is given that we have a normal distribution with mean of 257 feet and standard deviation of 45 feet.

X be the distance in feet for a fly ball.

a. As mean of the normal distribution is 257 and standard deviation is 45 feet

Therefore, distribution of X is (257,45)

b. Probability that a randomly hit fly ball travels less than 284 feet,

P(X < 284) =

The z-score can be calculated as

z = (x - μ)/σ = (284-257)/45 = 27/45 = 0.6

So, the equivalent z-score form can be given as:

P(X < 284) = P(Z < 0.6) = 0.2257

c. The 70th percentile of the distribution of fly balls is given by a raw score such that:

P(X < x)=70%⇒ x = ?

Using formula , z = (x - μ)/σ  ⇒ x = zσ + μ

P(Z < z) = 0.7000

Now, we can use the cumulative standard normal distribution table:

z = 0.7000 + 0.04  = 0.74

Finally, the required random variable can be computed as:

x = zσ + μ  = 0.74 × 45 + 257 = 33.3 + 257 = 290.3

That means P(X < 290.3) feet =70%

Therefore, the 70th percentile of the distribution of fly balls is approximately 290 feet

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.

5)

1= 102

2= 102

3= 78

ask any questions in the comments below if needed:)

In the given number, the digit that has the greatest value is 1.

We are given a number. The number is a natural number. Natural numbers are the numbers used in mathematics for counting and ordering. Cardinal numbers are those used for counting, and ordinal numbers are those used for ordering. The number contains five digits. We need to find the digit that has the greatest value. We know that as we go left, the place value of the digit increases by a factor of 10. So, the place value of the number is maximum for the digit that is present at the leftmost position in a number.

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The required function after shifting its origin will be g(x) = |x + 5| - 4

So, the answer is option C.

To move the origin's coordinates to (h, k):

Get the new equation by changing x and y in the given equation to (x-h) and (y-k), respectively.

Given functions f(x) = |x| or y = |x| in this case

Shift now five units to the left. x is changed to x - (-5) = x + 5.

Shift four units down, and y becomes y -(-4) = y + 4.

After shifting, the equation is now

y - k = |x - h|

y = |x -h| + k

y = |x - (-5)| +(-4) (-4)

g(x) = |x+5|-4

As a result, the necessary function will be g(x) = |x + 5| - 4 after changing its origin.

Option C is the correct response.

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The mistake that Raquel made in simplifying the expression is given as follows:

The square is applied only to the number 3, not to the sum of 5 and 3.

Hence the correct simplified version is:

(5 + 3²) + 18 = (5 + 9) + 18 = 32.

The expression for this problem is given as follows:

(5 + 3²) + 18.

The parenthesis takes precedence, hence the first operation to be solved is of:

5 + 3².

Then the square is the operation that takes precedence, hence the expression is given as follows:

5 + 3² = 5 + 9.

Here is where Raquel's mistake lays, as only the number 3 is squared, the number 5 is not, hence 3 is squared and then added to 5.

Then the correct result of the expression is obtained as follows:

5 + 9 + 18 = 32.

The problem is given by the image shown at the end of the answer.

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Pythagoras was a philosopher and a teacher. Pythagoras discovered that the square of the hypotenuse of a right-angled triangle, where one of the angles is 90 degrees, equals the sum of the squares of the other two sides: a2+b2=c2.

An angle with a measure of exactly 90 degrees (or /2) is referred to as a right angle. The proper angles are frequently demonstrated in everyday life. For instance, the edges of the cardboard or the corner of a book.

The right angle is created when two straight lines cross at a 90° angle or when they are perpendicular at the intersection. The symbol is used to indicate a right angle.

A point is surrounded by four right angles. According to our definition of a degree, a "complete turn" around a point is 360°, making each right angle one-fourth of that, or 90°.

One mountain it should be 30 Kilometers and other mountain should be 40 kilometers

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Answer:2

Step-by-step explanation:

Answer:

(3x-4y) (2x+1)

There are several methods to formulate a mathematical equation. A model, in its simplest basic form, is a quantitative declaration that two major theoretical findings are comparable.

A mathematical equation can be defined in a variety of ways. In its most basic form, a model is a mathematical assertion that indicates that two theoretical results are equal. 3x + 5 = 14, for example, is an equation inside which 3x + 5 and 14 are two formulas separated by an 'equal' sign. In mathematics, the most fundamental and elementary algebraic equations are comprised of one or more parameters.

Type of the mathematical equations are as follows:

A math statement is not the same as a maths problem. Between two arithmetic statements, a solution will always employ the equivalent (=) symbol.

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Answer: Equations can vary!

Step-by-step explanation: 1. Equations can be as simple as a math sentence with always an equal sign, make sure it balances, for example, 1+1=2

2. Equations can be complicated sometimes, with variables, but still you have to BALANCE both sides EQUALLY. One question is: 1+x=3

It seems simple and it is, and yeah you've actually done lots of equations throughout your life. Ever heard of algebra, it consists of equations, have you ever seen this 1+?=3? That's an equation with a variable that is represented as, or sometimes a box. You might take a look and say easy. I know, but the traditional steps are to take one on both sides first, but never forget what you do on one side you ALWAYS have to do to the other side. This is an easy equation question, there are going to be much more complex ones in the future.  

Answer:

First term: 3

Common difference: -1

Step-by-step explanation:

3rd term: 1

6th term: x

10th term: 3x

Formula for the nth term using the common difference d and the first term a1:

an = a1 + (n - 1)d

Third term: a3 = a1 + (3 - 1)d = a1 + 2d = 1

6th term: a6 = a1 + (6 - 1)d = a1 + 5d = x

10th term: a10 = a1 + (10 - 1)d = a1 + 9d = 3x

a1 + 2d = 1       Eq. 1

a1 + 5d = x      Eq. 2

a1 + 9d = 3x    Eq. 3

Eq. 2 - Eq. 1

3d = x - 1

Eq. 3 - Eq. 2

4d = 2x

x = 2d

3d = x - 1

Substitute 2d for x.

3d = 2d - 1

d = -1

a1 + 2d = 1

a1 + 2(-1) = 1

a1 = 3

Check:

Here are the first 10 terms:

3, 2, 1, 0, -1, -2, -3, -4, -5, -6

The third term is 1. Correct

The tenth term (-6) is 3 times the 6th term (-2). Correct

Answer:

First term: 3

Common difference: -1

The total impedance is 9+8i ohm.

From the question, we have

Z1= 2+9i

Z2=  7-i

we know,

total impedance in series,

Ztotal = Z1+Z2

            = 2+9i+7-i

            = 9+8i

The total impedance is 9+8i ohm.

Addition:

The act of combining two or more items is known as addition. The process of computing the sum of two or more numbers in mathematics is called addition. It is a fundamental mathematical procedure that is frequently used in daily life. When we work with money, figure out our food bills, or figure out the time, we frequently employ addition. One-digit numbers can be added simply for solving addition problems, however for bigger numbers, we divide the numbers into columns using their corresponding place values, such as ones, tens, hundreds, thousands, and so on.

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Answer:

The slope is [tex]\frac{-3}{5}[/tex]

Step-by-step explanation:

You know the slope is negative if you start on the left side and move right along the line.  You are moving down hill.  Down hill is a negative slope.

The left-hand side of the equation becomes (x - 4)² while the right side of the equation is 25

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

The standard form of a quadratic equation is given by:

0 = Ax² + Bx + C

Where A, B and C are constants.

Given the quadratic equation:

x² - 8x = 9

To solve the quadratic equation using the completing square method, add to both sides the square of half the coefficient of x, hence:

x² - 8x + (-4)² = 9 + (-4)²

(x - 4)² = 9 + 16

(x - 4)² = 25

The solution to the equation is (x - 4)² = 25

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3)

x= 16

4)

x= 51

please ask any questions in the comments below if needed

Answer: 3. 16=X  4. X=51

Step-by-step explanation:

Okay so for number 3, both angles are the same because of the parallel lines, so you can have the angles be equal to each other. Then just do the math. Giving you 16 as the answer

For 4 the angles added up together equal 180 because of the parallel lines. So you have to make them add up and then equal to 180, at the ending the answer is 51.

a - 2b + c = -6 (1)

a = -5c - 12 (2)

-a + 6b + 4c = 3 (3)

Putting (2) into (1) & (3) gives

(-5c -12) - 2b + c = -6 (5)

-(-5c - 12) + 6b +4c =3 (6)

Neatening it up gives

-2b - 4c = 6 (7)

6b + 9c = -9 (8)

Using simulataenous equations, we want to cancel out either b or c. b in this case is easier. Multiplying (7) makes that possible

(7) * 3

gives

-6b - 12c = 18 (9)

Adding (8) & (9) gives

-3c = 9

c = -3

Now we know c we can use that to calculate b in one of the previous equations.

Using (7)

-2b -4(-3) = 6

-2b = -6

b = 3

Now, b & c are known, we can use these in any equation with a to get the final unknown.

Using (1)

a - 2(3) + (-3) = -6

a = 3

Plugging a,b&c back into each (1) (2) & (3) to check you get the right answer is also a good sanity check that you've not made any mistakes in your previous working!

The exponential function of the given graph is y = 4ˣ

Exponential function:

the general form of the exponential function is written as,

y = aˣ

Where

a > 0 and a ≠ 1.

Here a is called the base and x is called the exponent.

Given,

Here we have the graph and the point (2,16)

Now, we have to find the exponential function form this graph and point.

We already know that the general form of the exponential function is

y = aˣ

Here we have point (2,16), now we have to apply this point value on the general form in order to find the value of a,

So, when we apply the point values, then we get,

16 = a²

Now, move the power value to the other side, then we get,

a = √16

a = 4

Therefore, the exponential function of the given graph is,

y = 4ˣ

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Answer:

-1.25 or -5/4

Step-by-step explanation:

I think it would be this because I remember that the slope formula is y2-y1/x2-x1 so using that you get 8-3/9-13 which simplifies to -5/4 which then turns into -1.25 when fully simplified. I think this is right.

Answer:

∴ He can travel 660 miles in 12 hours on the next day.

Step-by-step explanation:

Since the rate of travelling is equal on both days,

    8 hours = 440 miles travelled

    2 hours = 110 miles travelled

∴ 12 hours = 660 miles travelled

The value of 2cos² (-22.5°)-1 is 1/√2.

In trigonometry, double angle identities or double angle trig identities are a set of trigonometric identities for angles of form 2θ. There are three double angle identities for each of sine, cosine and tangent ratios.

Given that, 2cos² (-22.5°)-1

2cos²x -1 = cos2x

2cos² (-22.5°)-1 = cos2(-22.5°)

cos(-45°)

∵ cos(-x) = cosx

∴ cos(-45°) = cos(45°)

cos(45°) = 1/√2

Hence, The value of 2cos² (-22.5°)-1 is 1/√2.

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The equations that Nakeishia can use to determine the number of commercials and the number of movies on which Nakeisha’s songs were played include:

30m + 110(m + 2) = 760

Let the movies be represented by m

Since Nakeisha’s songs were played on 2 more commercials than movies, this will be m + 2.

Nakeisha will earn $30 every time one of her songs is played in a commercial and she will earn $110 every time one of her songs is played in a movie. This will be:

30m + 110(m + 2) = 760

This represents the equation.

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The side length of 6 units for the intermediate large square and 4 units for the smallest square, give the area of the shaded region as 32 square unites.

The area of a shape or figure is the two dimensional space occupied by the boundary line of the shape.

Please find attached a possible drawing of the figure in the question created with MS Word

From the drawing, we have;

Side length of the ;large square containing the other squares = 6 + 4 = 10

Area of the largest square, A₁ = 10 × 10 = 100

Side length of the second largest square = 6

Area of the second largest square, A₂ = 6 × 6 = 36

Side length of the two small squares = 4

Area of the two small squares, A₃ = 4 × 4 = 16

Therefore;

Area of the shaded region = A₁ - A₂ - 2·A₃

Which gives;

Area of the shaded region = 100 - 36 - 2×16 = 32

The area of the shaded region is 32

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The lowest possible number of voters for the democratic candidate are,

3120 to 4080.

What is election?

A populace selects a person or people to hold public office through a formal group decision-making process called an election. Since the 17th century, elections have been the primary means by which modern representative democracies have been governed.

Given: A voter polling research group determined that 30% of the voters in a county would vote for the democratic candidate with a +4% margin of error.

They anticipate only 12,000 people will turn out to vote in this election.

If 12000 voters participate in the election, then 30% of them are, 3600.

Now we must add and subtract 4% of the total voters to 3600 people.

4% of the total voters = 480.

So,

3600 + 480 = 4080

3600 - 480 = 3120

Therefore, 3120 to 4080 voters represent the lowest possible number of voters for the democratic candidate.

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Answer:

Step-by-step explanation:

Effective annual interest rate is an investment’s annual rate

of interest when compounding occurs more than a year.

The effective interest rate is calculated as if compounded

annually. The effective rate is calculated in following way…..

r = effective annual rate

i = nominal rate

n = number of periods

= (1+i/n)^n -1

For example, a nominal interest rate 6% compounded

monthly is equivalent to an effective interest rate of 6.17%

So, option A is the correct answer.

The graph of a relation that is a function is the last option that is in the attachment below.

A graph that represents a relation that is a function is a graph whose x-values each have exactly one corresponding y-value. That is to say, no two y-values correspond to one x-value in the graph of a relation that represents a function.

All of the graphs represents relations that have different y-values that correspond to an x-value except the graph at the bottom far right, whose diagram is attached below.

The graph attached below has exactly one y-value that corresponds to each x-value on the graph. Therefore, the relation is a function.

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Answer: I think its the second one

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

2.5 x 7 = 17.5

10^-10 x 10^-6 = 10^(-10-6) = 10^-16

17.5 x 10^-16

1.75 x 10^-16 x 10

1.75 x 10^(-16+1)

1.75 x 10^-15