a jar contains $3.60 in nickels and quarters. there are 28 coins in all. how many of each coin is in the jar?

The answer of the given question based on the finding the adjoint of M is 16  -4  -33

  -12  -5  -12.

In linear algebra, a cofactor is a scalar value that can be computed for each element of a square matrix. To find the cofactor of a specific element of a matrix, we first remove the row and column containing that element, and then compute the determinant of the remaining matrix. The sign of the cofactor depends on the position of the element within the matrix: it is positive if the sum of the row and column indices is even, and negative if the sum is odd.

The cofactor matrix of a given matrix is obtained by replacing each element of the matrix with its corresponding cofactor. Cofactor matrices are useful in computing the inverse of a matrix and in solving systems of linear equations.

The adjoint of  matrix is  transpose of its co-factor matrix.

First, we need to find the transpose of the co-factor matrix:

16  -12

-4   -5

-33  -12

Therefore, the adjoint of M is:

16  -4  -33

-12  -5  -12

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The weekly median income of a female with an advanced degree is 1,323.

What is a median?

The median, which is the centre value in a sorted, ascending or descending list of numbers, can better describe a data set than the average.

We are given three tables representing different data. The table 1 represents the total data, table 2 represents the data relating to men and the last table represents the data relating to female.

We are asked weekly median income of a female with an advanced degree.

So, from table 3 we get this data wherein the weekly median income of a female with an advanced degree is given as $1,323.

Hence, the  weekly median income of a female with an advanced degree is 1,323.

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Answer:

$5920.00

Step-by-step explanation:

1. (6% ÷ 100)×4000

=240.

2. 240 interest per year

240×8 years

= $1920

3. $1920 + $4000= $5920.00

The amount of money you'll have at the end of the indicated time period is $5920.

Given

You invest $4000 in an account that pays a simple interest of 6% for 8 years.

The amount of money you'll have at the end of 8 years.

We know the formula of simple interest, substitute the values in it,

[tex]\text{Simple interest}=\dfrac{\text{P}\times\text{R}\times\text{T}}{100}[/tex]

Substitute all the values in the formula

[tex]\text{Simple interest}=\dfrac{\text{P}\times\text{R}\times\text{T}}{100}[/tex]

[tex]\text{Simple interest}=\dfrac{\text{4000}\times\text{6}\times\text{8}}{100}[/tex]

[tex]\text{Simple interest}=40\times6\times8[/tex]

[tex]\text{Simple interest}=1920[/tex]

Therefore,

The amount of money you'll have at the end of the indicated time period is:

[tex]= \$1920 + \$4000 = \$5920[/tex]

Hence, the amount of money you'll have at the end of the indicated time period is $5920.

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Answer:It would be 40•.25=10

Step-by-step explanation: which means 40-10=30 so it’d be .25 and you’d move the decimal over 2 spots so it’d be 25% off

Using arithmetic progression, number of logs in 6th row are 33.

We can use the information that each row has 5 fewer logs than the row below it to create a sequence of the number of logs in each row. Let's call the number of logs in the first row "a" (which we know is 58 logs). Then, the number of logs in the second row will be "a - 5", the number of logs in the third row will be "(a - 5) - 5" or "a - 10", and so on.

So, we have the sequence of the number of logs in each row as:

a, a - 5, a - 10, a - 15, a - 20, ...

To find the number of logs in the 6th row, we need to find the 6th term in this sequence. We can use the formula for the nth term of an arithmetic sequence:

an = a₁ + (n - 1)d

where an is the nth term, a1 is the first term, n is the number of the term we want to find, and d is the common difference between terms (which is -5 in this case, since each row has 5 fewer logs than the row below it).

Substituting the given values, we get:

a₆ = a₁ + (6 - 1)(-5)

= a - 25

So, the number of logs in the 6th row is a - 25. Since we know that a is 58 logs, we can substitute and simplify:

a - 25 = 58 - 25 = 33

Therefore, the answer is (b) 33.

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Using the distance formula and the converse of the pythagorean theorem to determine whether the points are vertices of a right triangle :

22. The points (1,1), (4,4), and (1,4) form a right triangle.

23. The points (6,0), (6,4), and (2,4) form a right triangle.

24. The points (-2,1), (3,5), and (6,-2) does not form a right triangle.

The points (1,1), (4,4), and (1,4) form a triangle. We can use the distance formula to find the lengths of the three sides, and then use the converse of the Pythagorean theorem to determine whether it is a right triangle. The distance formula is:

d = √((x₂-x₁)² + (y₂-y₁)²)

So the lengths of the three sides are:

d₁ = √((4-1)² + (4-1)²) = √(27)

d₂ = √((1-1)² + (4-1)²) = √(9)

d₃ = √((1-4)² + (4-1)²) = √(18)

To check if it is a right triangle, we need to see if any of the sides squared equals the sum of the squares of the other two sides. If that is the case, then it is a right triangle. Otherwise, it is not. Checking the three possible combinations, we see that:

d₁² = 27

d₂² + d₃² = 9 + 18 = 27

Therefore, the triangle formed by the points (1,1), (4,4), and (1,4) is a right triangle.

Similarly for points (6,0), (6,4), and (2,4), the lengths of the three sides are:

d₁ = √((6-6)² + (4-0)²) = 4

d₂ = √((2-6)² + (4-4)²) = 4

d₃ = √((6-2)² + (0-4)²) = 4√2

To check :

d₁² + d₂² = 16 + 16 = 32

d₃² = 32

Therefore, the triangle formed by the points (6,0), (6,4), and (2,4) is a right triangle.

For points (-2,1), (3,5), and (6,-2) the lengths of the three sides are:

d₁ = √((3-(-2))² + (5-1)²) = √(41)

d₂ = √((6-3)² + (-2-5)²) = √(58)

d₃ = √((6-(-2))² + (-2-1)²) = √(73)

To check :

d₁² + d₂² = 41 + 58 = 99

d₃² = 73

Therefore, the triangle formed by the points (-2, 1), (3,5), and (6, -2) is not a right triangle.

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Answer:

v  = 40 cm

w  = 126

x  = 30

y  =  63 cm

Step-by-step explanation:

So are given that ΔBIG is similar to ΔMOP. This means that their respective angles are the same measurements, but different side lengths. By definition of similar triangles, their respective side lengths are equal in proportion.

∠I corresponds to ∠O, so their measurements are equal. w = 126°.

∠B corresponds to ∠M, so their measurements are also equal. We don't know the angle measurement for x, but we have all the angles for two similar triangles, so we can find the measure of the third angle. The total angle measure for any triangle is 180°.

x = 180 - 24 - 126

x = 30°

Now that we have all the angle measurements, we can proportions to calculate the lengths of the unknown sides. The proportion of ΔBIG to ΔMOP can be calculated using the corresponding side length for each triangle.

Segment BG corresponds to segment MP. The proportion of BG to MP is:

48/72. Proportions are fractions, so this ratio can be simplified to 2/3 (divide by 24 on top and bottom).

Now we know that the ratio of ΔBIG to ΔMOP is 2/3.

Segment BI (aka v) = (2/3) * 60 cm

v = 40 cm

Segment PO (aka y) * (2/3) = 42 cm

y = 42 * 1.5

y = 63 cm

y= 6;

x= 4.

[tex](1)y=6\\ \\(2)-x+y=2[/tex]

[tex](2)-x+(6)=2\\ \\-x+6=2\\ \\[/tex]

[tex]-x+6-6=2-6\\\\-x=-4[/tex]

[tex](-1)-x=-4(-1)\\ \\x=4[/tex]

y= 6;

x= 4.

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I hope it's helpful for you

B. Lin can make 2 batches of blueberry muffins.

C. Lin needs to make 2/3 of a batch of blueberry muffins to use all of the blueberries.

What is mixed fraction?

A mixed number is one that contains both a whole number and a fraction. The fraction is written after the whole number, with a space or plus sign placed between them. The mixed number 2 1/4 serves as an explanation for how the numbers 2 and 1/4 were added. Objects that aren't whole numbers but are close to them, such length or time measurements, are typically represented by mixed numbers.

a) Diagram

   4 cups of blueberries

    __ __ __ __

    |    |     |    |    |

    |__|__|__|__|

Each batch uses 3/2 cups of blueberries

B) To find the number of batches Lin can make, we need to divide the total amount of blueberries by the amount of blueberries per batch:

4 cups of blueberries ÷ (3/2 cups of blueberries per batch)

= (4 cups of blueberries) × (2/3 batches per cup of blueberries)

= 8/3 batches

Therefore, Lin can make 8/3 or approximately 2.67 batches of blueberry muffins using all of the blueberries.

C) To find the fraction of a batch Lin will need to make in order to use all of the blueberries, we need to subtract the number of whole batches from the total number of batches:

8/3 batches - 2 batches = 2/3 of a batch

Therefore, Lin will need to make 2/3 of a batch in order to use all of the blueberries.

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The solution of the composite function (f. g)(x)  in standard form is x⁵ - 2x³ + 2x² - 8x + 4.

The function (f . g)(x) is a composite function. Composite function is a function that depends on another function. In other words, composite function is a function that is within another function

Therefore, let's solve the composite function as follows:

f(x) = x³ - 4x + 2

g(x) = x² + 2

Hence,

(f. g)(x) = f(x) × g(x)

f(x) × g(x) = (x³ - 4x + 2)(x² + 2)

f(x) × g(x) = x⁵ + 2x³ - 4x³ - 8x + 2x² + 4

f(x) × g(x) = x⁵ - 2x³ + 2x² - 8x + 4

Therefore,

(f. g)(x) = x⁵ - 2x³ + 2x² - 8x + 4

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Answer:

the answer is most certainly 21

Step-by-step explanation:

Answer:

The volume of a cone is given by the formula V = 1/3πr²h, where r is the radius of the circular base and h is the height of the cone.

Since the diameter of the circular base is 18 inches, the radius is 9 inches. The height of the cone is 3 inches.

Substituting the values in the formula, we get:

V = 1/3π(9²)(3) V = 81π/3 V = 27π

Therefore, the exact volume of the cone is 27π cubic inches.

Answer:

Step-by-step explanation:

Using derivative of a function

The derivative of a function is its limit as the change in the independent variable tends to zero.

Now, since we have the [tex]\lim_{h \to 0}\frac{cos(\pi + h) - (- 1)}{h}[/tex].

We know that the definition of the derivative of  a function f(x) is

[tex]f'(x) =\lim_{h \to 0}\frac{f(x + h) - f(x)}{h}[/tex]

Now, comparing both equations, we see that

f(x + h) = cos(x + h), f(x) = -1

Now, since f(x + h) = cos(x + h), we notice that f(x) must be a cosine function.

So, f(x) = cosx

Now, f(a) = -1

cosa = -1

a = cos⁻¹(-1)

= π

So, substituting this into the derivative equation, we have

[tex]f'(x) =\lim_{h \to 0}\frac{f(x + h) - f(x)}{h}[/tex]

[tex]f'(x) =\lim_{h \to 0}\frac{cos(x + h) - (-1)}{h}\\=\lim_{h \to 0}\frac{cos(x + h) - cos(x)}{h}\\=\lim_{h \to 0}\frac{cos(\pi + h) - cos(\pi )}{h}\\= -sin\pi \\= 0[/tex]

So,

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To create a confidence range for the population standard deviation, we can use the chi-square distribution. Finding the chi-square values that correlate to 10% and 90% in the right tail of the distribution is necessary given that we have 94 samples and want an 80% confidence range.

The chi-square value for the 10th percentile is 71.47, and the chi-square value for the 90th percentile is 112.31, according to a chi-square distribution chart with 93 degrees of freedom (n-1).

The confidence interval's calculation is:

((n-1)*s2)/sqrt(X), (n-1)*s2)/sqrt(Y))

Where:

The group number is n.

The sample's standard variation is s.

X represents the bottom limit of the confidence interval's chi-square value.

Y is the chi-square value for the upper bound of the confidence interval

Substituting the values we have:

(sqrt((94-1)*4.11^2)/sqrt(112.31)) = 5.63

(sqrt((94-1)*4.11^2)/sqrt(71.47)) = 4.81

Therefore, the 80% confidence interval for the population standard deviation of the widths of all doors in this factory is (4.81, 5.63).

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Answer:

y=y^2

Step-by-step explanation:

because you have to change X into y

Answer: 1/3 or 33.33%

Step-by-step explanation:

30000000/90000000=1/3 or 33.33%

Answer:

Leg 1 = 13

Leg 2 = 84

Hypotenuse = 85

Step-by-step explanation:

Hello!

The larger of the other two legs would be the hypotenuse, as the hypotenuse is the largest side in a right triangle (as stated in the problem.

The Pythagorean theorem states that the sum of the squares of the legs is equal to the square of the hypotenuse.

Let the smallest of the other legs be x, and the hypotenuse be x + 1.

The equation is: [tex]13^2 + x^2 = (x+1)^2[/tex]

We found the value for x, so we can find the hypotenuse by adding 1, which gives us 85.

The cost increases by $10 for each ton of sugar being transported. This can be seen from the fact that for every 1 ton increase in weight, the cost increases by $10. And the slope of the line is $10/ton.

(a) To calculate the cost increase per ton of sugar being transported, we need to find the change in cost when the weight of sugar increases by 1 ton.

Looking at the graph, we can see that the cost increases from $20 to $30 as the weight of sugar increases from 1 ton to 2 tons. Therefore, the cost increase per ton of sugar is:

$30 - $20 = $10

So the cost increases by $10 for each ton of sugar being transported.

(b) The slope of the line can be calculated using the formula:

slope = (change in y) / (change in x)

where y is the cost and x is the weight of sugar being transported.

Since the line is perfectly horizontal, the change in y is zero for any change in x. Therefore, the slope is:

slope = 0 / (change in x) = 0

So the slope of the line is zero, which means that the cost does not change as the weight of sugar being transported changes.

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Answer: 8 books

Step-by-step explanation:

y= how much shelf space take up (inches)

x= # of books

y=2x

in this situation 16=y

16=2x

divide both sides by 2

8=x

Answer: It is 180

Step-by-step explanation:

The vοlume οf the cοne is apprοximately 205.9 cubic inches.

A cοne is a shape fοrmed by using a set οf line segments οr the lines which cοnnects a cοmmοn pοint, called the apex οr vertex, tο all the pοints οf a circular base(which dοes nοt cοntain the apex). The distance frοm the vertex οf the cοne tο the base is the height οf the cοne.

The diameter οf the base is twice the radius, sο:

Diameter = 2 x Radius = 2 x 3.5 inches = 7 inches

The height οf the cοne is twice the diameter, sο:

Height = 2 x Diameter = 2 x 7 inches = 14 inches

The vοlume οf a cοne can be fοund using the fοrmula:

Vοlume = (1/3) x π x Radius² x Height

Substituting the given values, we get:

Vοlume = (1/3) x π x (3.5 inches)² x (14 inches)

Simplifying, we get:

Vοlume = (1/3) x π x 12.25 inches² x 14 inches

Vοlume = 205.9 cubic inches (rοunded tο οne decimal place)

Therefοre, the vοlume οf the cοne is apprοximately 205.9 cubic inches.

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Answer: 18/27 or 2/3

Step-by-step explanation: trust me

The experimental probability that the card selected was a K or 6 is option B.

What is Probability?

PrοbabiIity is the study οf the chances οf οccurrence οf a resuIt, which are οbtained by the ratiο between favοrabIe cases and pοssibIe cases.

Frοm the tabIe, we can see that the frequency οf drawing a K οr 6 is:

Frequency(K οr 6) = Frequency(K) + Frequency(6) = 4 + 10 = 14

The tοtaI number οf draws is 100.

The experimentaI prοbabiIity οf drawing a K οr 6 can be caIcuIated as:

ExperimentaI PrοbabiIity(K οr 6) = Frequency(K οr 6) / TοtaI number οf draws

ExperimentaI PrοbabiIity(K οr 6) = 14 / 100

ExperimentaI PrοbabiIity(K οr 6) = 0.14

Therefοre, the experimental prοbabiIity that the card seIected was a K οr 6 is 0.14 οr 14%. Optiοn b is the cοrrect answer.

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Answer: (a) John spent 2/5 of the remainder of his money on a toy. Let's first find the remainder of his money after he spent 20% on food. If he spent 20% on food, then he has 80% of his money remaining. So, if he had $x initially, he has $0.8x remaining.

John spent 2/5 of the remainder on a toy, so we can set up the equation:

(2/5)(0.8x) = 12

Simplifying, we get:

0.32x = 12

Dividing both sides by 0.32, we get:

x = 37.5

So, John initially had $37.5.

To find the percentage of his money he spent on the toy, we can use the following formula:

Percentage = (amount spent on toy / initial amount) * 100%

The amount John spent on the toy is $12, and his initial amount is $37.5, so we get:

Percentage = (12 / 37.5) * 100% = 32%

Therefore, John spent 32% of his money on the toy.

(b) John initially had $37.5.

Step-by-step explanation:

To calculate the probability of Gretchen getting a roast beef sandwich on wheat bread and popcorn in her boxed lunch, we need to know the total number of possible boxed lunch combinations and the number of boxed lunches that contain roast beef on wheat bread and popcorn.

Let's assume there are 4 different types of sandwiches available: roast beef on wheat bread, turkey on white bread, ham on rye bread, and vegetarian on whole wheat bread. Also, let's assume there are 3 different snack options available: popcorn, chips, and fruit.

If each boxed lunch contains one sandwich and one snack, then there are 4 x 3 = 12 possible boxed lunch combinations.

Out of these 12 combinations, we need to determine how many contain roast beef on wheat bread and popcorn. Let's say there are 2 boxed lunches that contain roast beef on wheat bread and popcorn.

Therefore, the probability of Gretchen randomly choosing a boxed lunch with roast beef on wheat bread and popcorn is 2/12, which simplifies to 1/6, or approximately 0.1667.

So, there is a 16.67% chance that Gretchen will get a roast beef sandwich on wheat bread and popcorn in her box.

Answer:

the answer is very simple the answer would be, 5 giga horse power every hour, 5/60*360= 30, the answer is 30m/s2

Step-by-step explanation:

according to formula

If the average is 85 minutes, then on the seventh day he skated for 115 minutes.

For a set of N values {x₁, x₂, ..., xₙ} we define the average as:

A = (x₁ + ... + xₙ)/N

Here we know that for four days, he skated for 1hr + 25min = 85 min

Then for 2 days he skated for 1hr + 10min = 70 min

And the seventh day he skated x minutes.

We know that the average is 85 min, then we can write the equation:

(4*85 + 2*70 + x)/7 = 85

x = 85*7 - 2*70 - 4*85

x = 115

He scated for 115 minutes.

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Answer:

(-6,-3), (3,6), and (3,-3)

Step-by-step explanation:

the triangle has 3 points: (-2,-1), (1,2), and (1,-1)

for (x,y) => (3x,3y)

then

(-2,-1) => (-6,-3)

(1,2) => (3,6)

(1,-1) => (3,-3)

so you should draw the triangle with 3 points: (-6,-3), (3,6), and (3,-3)