Please help me with my math

Answer:153

Step-by-step explanation:

The probability of getting a green golf ball from the machine is 19/83 or 0.2289. The result is obtained by the number of green golf balls divided by the total number of golf balls.

Probability of an event can be calculated by

P(A) = n(A) / n(S)

Where

You have 19 green golf balls, 24 red golf balls, 20 blue golf balls, and 20 yellow golf balls.

Find the probability of getting a green golf ball from the machine!

The total number of golf balls in the machine is

n(S) = 19 + 24 + 20 + 20 = 83 balls

You will end up with a green golf ball with the probability of

P(A) = n(A) / n(S)

P(A) = 19/83

P(A) = 0.2289

Hence, the probability that you will end up with a green golf ball is 19/83 or 0.2289.

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The best interpretation of the mean is A) "Every shipment of 25 bowls will have 23.75 undamaged bowls."

The question states that the company claims that 95% of their shipments arrive undamaged. This implies that the probability of a bowl being damaged in a shipment is 0.05.

Since the random variable G follows a binomial distribution with n=25 (number of shipments) and p=0.05 (probability of a shipment having a damaged bowl), the mean of G is given by np = 25 x 0.05 = 1.25.

However, the question asks about the number of undamaged bowls in a shipment, which is simply the number of bowls in a shipment minus the number of damaged bowls.

Therefore, the mean number of undamaged bowls in a shipment is 25 - 1.25 = 23.75. This means that on average, a shipment of 25 bowls will have 23.75 undamaged bowls.

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The data suggest that females suffer more from asthma than males.

The null and alternative hypotheses for this problem are:
H0: p1 - p2 = 0; HA: p1 - p2 ≠ 0
The value of the test statistic is 3.7775 and its associated p-value is 0.0002. At the 5% significance level, the conclusion is that we reject the null hypothesis, and therefore we can say that the data suggest that females suffer more from asthma than males.

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In the given elementary matrix, the corresponding elementary row operation is multiplication of the second row of a given matrix with a scalar of 5. The given matrix is an elementary matrix because it can be obtained by multiplying an identity matrix by an elementary matrix. The inverse of the given matrix can be obtained by multiplying a scalar of 1/5 to the second row of the identity matrix.

The given elementary matrix is:
[1 0 0]
[0 0 5]
[0 1 0]

The corresponding elementary row operation for this matrix is multiplication of the second row of a given matrix with a scalar of 5. This means that if we have a matrix A and we multiply the second row of A with a scalar of 5, we get a new matrix B which is represented by the above elementary matrix.

The inverse of the given matrix is:
[1 0 0]
[0 1/5 0]
[0 0 1]

The inverse of a given elementary matrix can be obtained by applying the inverse of the corresponding elementary row operation to an identity matrix. In this case, the inverse of the given elementary matrix can be obtained by multiplying a scalar of 1/5 to the second row of the identity matrix. This gives us the above inverse matrix.

Therefore, the corresponding elementary row operation for the given matrix is multiplication of the second row of a given matrix with a scalar of 5 and the inverse of the given matrix is:
[1 0 0]
[0 1/5 0]
[0 0 1]

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The  dimensions of the rectangle is 1mm x 0.5mm.

The area of a sector of a circle can be calculated using the formula A = (1/2)*r2*θ,  

 where r is the radius of the circle and

θ is the angle of the sector.

Therefore, the area of the sector given in the question is A = (1/2)*r²*1, where r = 1.

Since the rectangle has the same area as the sector,

the area of the rectangle can be calculated as A = l*w,

 where l is the length and

w is the width.

This equation can be rearranged to give l = A/w,

 where A = (1/2) and w is the width.

Substituting the values for A and w into the equation gives l = (1/2) / w.

Since the width of the rectangle is the same as the radius of the circle,

w = 1.

Therefore, the length of the rectangle is l = (1/2), which gives the dimensions of the rectangle as 1mm x 0.5mm, rounded to the nearest millimeter.

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By answering the presented question, we may conclude that Therefore, the solution to the system of equations is: x = 36/31 and y = 57/31.

In mathematics, an equation is a statement stating the equivalence of two expressions. An equation generally made up of two sides delimited by a system of equations (=). For example, the argument "2x + 3 = 9" states that the word "2x Plus 3" equals the integer "9". The objective of equation solving is to identify the amount or amounts of the variables ( independent variables) that will allow this equation to really be true. Mathematics can be simple or complex, regular or quadratic, and contain one or more parts. In the equation "x2 + 2x - 3 = 0," for illustration, the variable x is elevated to the second power. Lines are employed in numerous different fields of mathematics, including arithmetic, calculus, and geometry.

From the given system of equations, we have:

[tex]8x + 7y = 17 ...(1)\\x - 3y = -5 ...(2)\\x = 3y - 5 ...(3)\\8(3y - 5) + 7y = 17\\24y - 40 + 7y = 17\\31y = 57\\y = 57/31\\x = 3(57/31) - 5\\x = 36/31[/tex]

Therefore, the solution to the system of equations is:

x = 36/31 and y = 57/31.

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The solution to the system of equations is: x = 36/31 and y = 57/31.

In mathematics, an equation is a statement stating the equivalence of two expressions. An equation generally made up of two sides delimited by a system of equations (=). For example, the argument "2x + 3 = 9" states that the word "2x Plus 3" equals the integer "9". The objective of equation solving is to identify the amount or amounts of the variables ( independent variables) that will allow this equation to really be true. Mathematics can be simple or complex, regular or quadratic, and contain one or more parts. In the equation [tex]"x^2 + 2x - 3 = 0,[/tex]" for illustration, the variable x is elevated to the second power. Lines are employed in numerous different fields of mathematics, including arithmetic, calculus, and geometry.

From the given system of equations, we have:

[tex]$\begin{aligned} & 8 x+7 y=17 \ldots(1) \\ & x-3 y=-5 \ldots(2) \\ & x=3 y-5 \ldots(3) \\ & 8(3 y-5)+7 y=17 \\ & 24 y-40+7 y=17 \\ & 31 y=57 \\ & y=57 / 31 \\ & x=3(57 / 31)-5 \\ & x=36 / 31\end{aligned}$[/tex]

Therefore, the solution to the system of equations is:

x = 36/31 and y = 57/31.

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We have established that the answer to the equation,  [tex]x = 24/7[/tex] , is that the left side equals the right side.

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation [tex]3x + 5 = 14[/tex]  consists of the two equations  [tex]3x + 5[/tex] and 14, which are separated by the 'equal' sign.

The equation is as follows:

[tex]\frac{1}{2}\times (x-2)+ 1+2/3x-3[/tex]

This equation can be made simpler by first merging like terms:

[tex]\frac{1}{2}\times (x-2)+ 1+2/3x-3[/tex]

[tex]= 1/2x + 2/3x - 4[/tex]

[tex]= 7/6*x - 4[/tex]

As a result, the equation becomes [tex]7/6*x - 4 = 0.[/tex]

We can now get the value of x by multiplying both sides by 6/7 after adding 4 on both sides: [tex]7/6*x = 4 x = 24/7.[/tex]

We rewrite the original equation with x = 24/7 to confirm the solution:

[tex]1/2*(24/7-2)+1+2/3(24/7)-3[/tex]

[tex]= 1/2*(10/7)+1+16/21-3[/tex]

[tex]= 5/7+1-2/3[/tex]

[tex]= 6/7[/tex]

Therefore, 6/7 demonstrates the equality.

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The integers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 have been written on a chalkboard by Dayna. She then erased the integers from 1 through 6, as well as their multiplicative inverse $\mod{13}$.

We can find the multiplicative inverse of an integer { a modulo 13 } by using the extended Euclidean algorithm.The integers from 1 to 6 are 1, 2, 3, 4, 5, and 6.The multiplicative inverse of : 1 modulo 13 is 1, 2 modulo 13 is 7,  3 modulo 13 is 9, 4 modulo 13 is 10, 5 modulo 13 is 8, and 6 modulo 13 is 11.The only integer that Dayna does not erase is 12.

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Answer:

-1/3

Step-by-step explanation:

Answer:

-1/3

Step-by-step explanation:

The water level in the aquarium rises by (A) 0.25.

The volume of water in the aquarium before the rock is added is:

100 cm x 40 cm x 37 cm = 148000 cm^3

When the rock is added, its volume is 1000 cm^3, so the total volume of water and the rock is:

148000 cm^3 + 1000 cm^3 = 149000 cm^3

To find the new water level, we need to divide the total volume by the base area of the aquarium:

149000 cm^3 ÷ (100 cm x 40 cm) = 37.25 cm

Therefore, the water level rises by:

37.25 cm - 37 cm = 0.25 cm

So the answer is (A) 0.25.

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Your question is incomplete, but probably the complete question is :

An aquarium has a rectangular base that measures 100 cm by 40cm and has a height of 50cm. The aquarium is filled with water to a depth of 37 cm. A rock with volume 1000cm^3 is then placed in the aquarium and completely submerged. By how many centimeters does the water level rise?

(A) 0.25

(B) 0.5

(C)

(D)1.25

(E) 2.5

Leo has 48 toy soldiers.

What is the key concept is used to solve the question ?

This problem involves finding a number that satisfies certain conditions related to division with remainders. Specifically, the number must be divisible by 4 with no remainder, must leave a remainder of 6 when divided by 7, and must leave a remainder of 3 when divided by 5.

Calculating the number of toy soldiers :

Let's start by using the first condition to narrow down the possibilities for the number of toy soldiers. We know that the number must be divisible by 4 with no remainder, and it must be between 27 and 54. The multiples of 4 in this range are 28, 32, 36, 40, 44, 48, and 52.

Next, we can use the second condition to eliminate some of these possibilities. If we divide each of these numbers by 7, we get the following remainders:

28 ÷ 7 = 4 remainder 0

32 ÷ 7 = 4 remainder 4

36 ÷ 7 = 5 remainder 1

40 ÷ 7 = 5 remainder 5

44 ÷ 7 = 6 remainder 2

48 ÷ 7 = 6 remainder 6

52 ÷ 7 = 7 remainder 3

The only number in our list that leaves a remainder of 6 when divided by 7 is 48, so we can tentatively conclude that this is the number of toy soldiers.

Finally, we can check the third condition to make sure that 48 leaves a remainder of 3 when divided by 5. Indeed, 48 ÷ 5 = 9 remainder 3, so all of the conditions are satisfied.

Therefore, we can confidently say that Leo has 48 toy soldiers.

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Answer:

Let A represent the cost of purchasing a pool membership from the Aquatics Club and let S represent the cost of purchasing a pool membership from the Swimming Hole. Then, we can write the following system of inequalities:

A ≤ y

A = 75 + 20x

S ≤ y

S = 15 + 65x

The first two inequalities represent the cost of purchasing a membership from the Aquatics Club, while the last two represent the cost of purchasing a membership from the Swimming Hole. The inequalities ensure that the cost of purchasing a membership from either company does not exceed Alfonso's budget of y dollars.

Answer:

P(A n B) = 1/4

Step-by-step explanation:

We know that:

P(A U B) = P(A) + P(B) - P(A n B)

Substituting the given values, we get:

3/8 = 1/2 + 3/4 - P(A n B)

Simplifying, we get:

P(A n B) = 1/4

Answer: P ( A n B ) = 7/8

Step-by-step explanation:  P ( A U B ) = P(A) + P(B) - P( A n B )

                                                         3/8   =   1/2  + 3/4 - P( A n B )

                                                         3/8   =   5/4 - P ( A n B )

                                               P ( A n B )  =  5/4 - 3/8

                                               P ( A n B )  =   7/8

The expression shows the height, in meters, of the sail is 2(sin 40°) (option A)

One way to approach this problem is to use the sine function.

We know that sin(40 degrees) is equal to the length of the side opposite angle 40 degrees divided by the length of the hypotenuse. In other words, sin(40 degrees) = b/c.

We want to find the length of the segment that drops from the top of the sail to side a, which we will call h.

This segment is the side adjacent to angle 40 degrees, so we can use the cosine function to relate it to the length of side b. Specifically, cos(40 degrees) = h/b. Solving for h, we get

h = 2 x sin(40 degrees) = 2(sin 40°)

Hence the option (A) is correct.

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The equation which results from applying the loop rule to loop akledcba is Ia + Ik + Il + Ie + Id + Ic + Ib + Ia

The current going through the top is 2.71 A.

Itop = 65 A - (24.0 V/0.10 Ω) - (5.0 Ω * 2) - (48.0 V/20 Ω) - (40 Ω * 0.50 Ω) - (36.0 V/6.0 Ω) - (10.05 Ω * 0.20 Ω) - (78 Ω * 0.20 Ω) = 2.71 A.

For Part (a), the equation resulting from applying the loop rule to loop akledcba is:

Iakledcba = Ia + Ik + Il + Ie + Id + Ic + Ib + Ia

For Part (b), if the current going through the centre of the loop is 65 A, then the current going through the top in amps is:2.71 A.

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The likelihood of pulling a spade followed by a face card from a deck is 3/52, or roughly 0.0588. (rounded to four decimal places).

The probability of drawing a spade from a deck of 52 cards is 13/52, or 1/4, since there are 13 spades in the deck.

Once a spade has been drawn and not returned to the deck, there are now 51 cards left in the deck, of which 12 are face cards (the Jack, Queen, and King of each suit). Therefore, the probability of drawing a face card given that a spade has already been drawn is 12/51.

To find the probability of both events happening together (drawing a spade and then a face card), we can multiply the probabilities of each event:

P(drawing a spade, then drawing a face card) = P(drawing a spade) x P(drawing a face card given that a spade has been drawn)

= (1/4) x (12/51)

= 3/52

Therefore, the probability of drawing a spade, then drawing a face card out of a deck is [tex]3/52[/tex]  , or approximately [tex]0.0588[/tex] (rounded to four decimal places).

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None of the given options (i.e. a, b, c, or d) is correct.

Given the prices of consumer items, we can find the estimate of the current CPI.

The percentage change in the price of the consumer item over time can be given as:

Percentage change = (Current Price − Price in 1983)/Price in 1983 × 100%

Now, using the percentage change we can find the average percentage change (increase or decrease) in prices. We calculate the average percentage change by finding the sum of the percentage change in prices of all items and then dividing it by the number of items.

Thus, we have:

Average percentage change = [(126.85−67.45)/67.45 + (29.95−15.25)/15.25 + (2.25−1.15)/1.15 + (44.25−22.85)/22.85]/4Average percentage change = 4.4188%

Now, the current CPI can be found using the following formula:

Current CPI = CPI in 1983 × [1 + (Average percentage change)/100]Current CPI = 100 × [1 + 4.4188/100] ≈ 104.42 ≈ 104

Therefore, the reasonable estimate of the current CPI is 104.

None of the given options (i.e. a, b, c, or d) is correct.

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The integration of the given function using substitution and matching it with the Taylor series is equal to 4/3.

Step 1: Find the Taylor series of the given function f(x).

f(x) = e^(x^2)cos(x)

Therefore, we can say that the Taylor series of the given function is: f(x) = 1 + x^2 + (1/2)x^4 + (1/6)x^6 + (1/24)x^8 + ...

Step 2: Substitute the required value of x into the Taylor series. Let us substitute x = 1 into the Taylor series we got above.

f(1) = 1 + 1^2 + (1/2)1^4 + (1/6)1^6 + (1/24)1^8 + ...

f(1) = 1 + 1 + (1/2) + (1/6) + (1/24) + ...

Step 3: Simplify the expression to get the answer. We can simplify the above expression by using the formula for the sum of an infinite geometric series. The formula is given as follows:

Sum of infinite geometric series = a / (1 - r), where a is the first term and r is the common ratio. Here, a = 1 and r = 1/4. Sum of the series = a / (1 - r) = 1 / (1 - 1/4) = 4/3.

Therefore, we can say that the integration of the given function using substitution and matching it with the Taylor series is equal to 4/3.

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Answer:

n(s) =52. n(f) = 12 n(h) = 13

p (f)= 13/52. p(f)= 12/52

Answer:

We can represent the constraints of this situation with the following system of linear inequalities:

x ≥ 20 (the company needs at least 20 managers)

y ≤ 500 (the company needs no more than 500 employees)

x + y ≥ 400 (the company must hire a total of at least 400 people)

So the system of linear inequalities is:

x ≥ 20

y ≤ 500

x + y ≥ 400

The vertices of the resulting image, quadrilateral H’ I’ J’ K’ include the following:

H' (4, -1).

I' (2, -3).

J' (-4, 1).

K' (-2, 3).

In Mathematics, a rotation is a type of transformation which moves every point of the object through a number of degrees around a given point, which can either be clockwise or counterclockwise (anticlockwise) direction.

In Geometry, rotating a point 270° about the origin would produce a point that has the coordinates (y, -x).

By applying a rotation of 270° about the origin to quadrilateral HIJK, the location of its vertices is given by:

(x, y)                                   →         (y, -x)

Ordered pair H (1, 4)        →    Ordered pair H' (4, -(1)) =  (4, -1).

Ordered pair I (3, 2)        →    Ordered pair I' (2, -(3)) =  (2, -3).

Ordered pair J (-1, -4)        →    Ordered pair J' (-4, -(-1)) =  (-4, 1).

Ordered pair K (-3, -2)        →    Ordered pair K' (-2, -(-3)) =  (-2, 3).

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An Inequality is a relationship between two expressions or values that aren't equal. The relationship between n and 4 is given by the inequality n> 4.

We want to find a relation between n and 4 similar that

7 *( n/ 4)> 7

still, we get

If we now divide both sides of the former inequality by 7.

7 *( n/ 4)/ 7>7/7

n/ 4> 1

So n/ 4 must be lesser than 1.

A better way to show the relationship is to multiply both sides of the inequality by 4.

4 *( n/ 4)> 4 * 1

n> 4

So the relationship between n and 4 is that n must be lesser than 4.

In mathematics, an inequality is a relationship that results in an unstable comparison of two figures or other fine expressions. It's frequently used to compare two figures on a number line grounded on their size.

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Answer:

y=-17

Step-by-step explanation:

1-2(9)=1-18=-17

Answer: y = -17

Step-by-step explanation:

Using PEMDAS, you need to do the multiplication first. 2 times x is 18, because the value of x is 9. You will then get 1 - 18. This is -17, so y = -17. I hope that this helped! :)

The correctness of the student's solution, we need to have the equations of the system.

A system of equations is graphed on the coordinate plane. A student concludes that the solution of the system is (-0.5, 1.5). Is this correct? Justify your response.To conclude that a system of equations has a solution in the coordinate plane, a set of ordered pairs (x, y) should satisfy both equations in the system of equations. That is, the system of equations should have a point (x, y) that is a solution of both equations.Only by testing the solution in the given system of equations can we know if the student's conclusion is correct. If the solution is satisfied by the system of equations, then the answer is true. Otherwise, it is false. However, since no system of equations is provided in the question, we cannot test the student's solution.To justify the correctness of the student's solution, we need to have the equations of the system.

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Answer:

Step-by-step explanation:

To find the product of (7-8x)(3x^3-2x^2+x), we need to use the distributive property of multiplication over addition/subtraction.

First, let's distribute the 7 across the second factor:

(7)(3x^3) - (7)(2x^2) + (7)(x)

This simplifies to:

21x^3 - 14x^2 + 7x

Next, we need to distribute the -8x across the second factor:

(-8x)(3x^3) + (-8x)(-2x^2) + (-8x)(x)

This simplifies to:

-24x^4 + 16x^3 - 8x^2

Now, we can combine the two simplifications:

(7-8x)(3x^3-2x^2+x) = 21x^3 - 14x^2 + 7x - 24x^4 + 16x^3 - 8x^2

Finally, we can combine like terms to simplify the expression:

-24x^4 + 37x^3 - 22x^2 + 7x

Therefore, the product of (7-8x)(3x^3-2x^2+x) is -24x^4 + 37x^3 - 22x^2 + 7x.

Answer:

b ≈ 12.1

Step-by-step explanation:

using the tangent ratio in the right triangle

tan60° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{b}{7}[/tex] ( multiply both sides by 7 )

7 × tan60° = b , then

b ≈ 12.1 ( to the nearest tenth )

The area of a triangle is calculated by multiplying the base of the triangle by the height and dividing by 2. Therefore, the number of sides of the triangle is relevant to calculating its area.

Triangle is a three-sided polygon that is considered one of the most basic shapes in geometry. It is composed of three line segments that intersect at three points called vertices. The angles formed by the three line segments are the angles of the triangle. A triangle has three sides, three angles, and three vertices. Depending on the length of the sides and the angles, triangles can be classified as acute, right, or obtuse. Acute triangles have all three angles measuring less than 90 degrees, right triangles have one angle measuring 90 degrees, and obtuse triangles have one angle measuring more than 90 degrees. Triangles are also classified by their sides, such as equilateral, isosceles, and scalene. An equilateral triangle has three equal sides and three equal angles, an isosceles triangle has two equal sides and two equal angles, and a scalene triangle has three sides and three angles that are all different. Triangles are used in many areas of mathematics and are seen in many engineering structures and designs.

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The area of a triangle is calculated by multiplying the base of the triangle by the height and dividing by 2. Therefore, the number of sides of the triangle is relevant to calculating its area.

Triangle is a three-sided polygon that is considered one of the most basic shapes in geometry. It is composed of three line segments that intersect at three points called vertices. The angles formed by the three line segments are the angles of the triangle. A triangle has three sides, three angles, and three vertices. Depending on the length of the sides and the angles, triangles can be classified as acute, right, or obtuse. Acute triangles have all three angles measuring less than 90 degrees, right triangles have one angle measuring 90 degrees, and obtuse triangles have one angle measuring more than 90 degrees.

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Complete Question:
Place a checkmark by the situations that indicate area1 is a triangle.

(a) Since Ed continues to invest the same amount each year for the next 20 years, the function R(t) will be constant and equal to 14.286 thousand dollars per year:

R(t) = 14.286

(b) Since Ed increases his investment by 3.75 thousand dollars per year over the next 20 years, the function R(t) will be a linear function of time, with a slope of 3.75 and an initial value of 14.286:

R(t) = 14.286 + 3.75t

(c) Since Ed increases his investment by 3.75% each year over the next 20 years, the function R(t) will be a geometric sequence, with a common ratio of 1.0375 and an initial value of 14.286:

R(t) = 14.286 * (1.0375)^t

Note that since the function is continuous, we could also use the continuous growth formula [tex]R(t) = 14.286 * e^{0.0375t}[/tex] to model the investment stream.

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Answer:

the formula is -xcomma y because I there is y intercept then there x will be negative. not y