exercise 1.2.21 a boy finds $1.05 in dimes, nickels, and pennies. if there are 17 coins in all, how many coins of each type can he have?

Answer: why is it wrong

Step-by-step explanation:i said so

the answer is 207 Remainder 1

To write the center and radius of a circle, we need to have the equation of the circle in standard form, which is: (x - h)² + (y - k)² = r² where (h, k) is the center of the circle and r is the radius.

A circle is a geometrical figure that is defined as a closed shape where all the points on the boundary of the shape are at an equal distance from the center point. The center of a circle is the point which is equidistant from all points on the circumference of the circle. To determine the center of a circle, we need to follow some steps:

Step 1: Identify the coordinates of three points on the circle

To find the center of a circle, we need to know the coordinates of at least three points on the circumference of the circle. The coordinates of these points can be determined by measuring the distance of the points from the x-axis and y-axis.

Step 2: Find the perpendicular bisectors of two chords

Once we have identified three points on the circle, we need to find the perpendicular bisectors of two chords. A chord is a line segment that connects two points on the circumference of the circle. The perpendicular bisector of a chord is a line that is perpendicular to the chord and passes through the midpoint of the chord.

Step 3: The intersection of perpendicular bisectors is the center of the circle

The perpendicular bisectors of two chords will intersect at a single point. This point is the center of the circle. To verify that this point is indeed the center, we can measure the distance from the center point to the three points on the circle. If the distances are equal, then the point is indeed the center of the circle.

In summary, to find the center of a circle, we need to identify the coordinates of at least three points on the circumference of the circle, find the perpendicular bisectors of two chords, and then find the intersection of the two perpendicular bisectors. This point is the center of the circle.

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The net worth of the surf shop is $585,074.

The variable and fixed cost of providing commodities are combined to create a total using the total cost formula.

First, we need to add the $20,000 increase in property value to the existing value to get the new property value:

$181,975 + $20,000 = $201,975

Next, we can add up the values of all the assets:

Owned inventory + Cash + Savings account + Accounts receivable + Owned equipment + Property value + Long-term investments

= $32,990 + $219,783 + $148,321 + $11,261 + $35,872 + $201,975 + $138,000

= $788,202

Then we can add up the values of all the liabilities:

Building mortgage + Small business loan + Other debt + Long-term liabilities

= $100,650 + $22,698 + $45,780 + $35,000

= $203,128

Finally, we can subtract the total liabilities from the total assets to find the net worth of the surf shop:

Net worth = Total assets - Total liabilities

= $788,202 - $203,128

= $585,074

Therefore, the net worth of the surf shop is $585,074.

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After answering the presented question, we can conclude that equation Therefore, the height of the plane after 6 minutes of descending is 19,500 feet.

An equation in mathematics is a statement that states the equality of two expressions. An equation is made up of two sides that are separated by an algebraic equation (=). For example, the argument "2x + 3 = 9" asserts that the phrase "2x Plus 3" equals the value "9." The purpose of equation solving is to determine the value or values of the variable(s) that will allow the equation to be true. Equations can be simple or complicated, regular or nonlinear, and include one or more elements. The variable x is raised to the second power in the equation "x2 + 2x - 3 = 0." Lines are utilised in many different areas of mathematics, such as algebra, calculus, and geometry.

h(t) = 32,000 - 2,250t

h(6) = 32,000 - 2,250(6) = 19,500 feet

Therefore, the height of the plane after 6 minutes of descending is 19,500 feet.

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Answer:

Step-by-step explanation:

Here's a graph of a line with a negative slope:

| /

| /

| /

| /

|/

------->

The line descends from left to right.

To draw the slope triangles, we can choose any two points on the line and draw a triangle with one vertex at each point. Let's choose the points (0, 4) and (3, 0):

| /

| /

| / T1

| /

|/

----/-------

/|

/ |

/ |

/ |

T2

The height of the first triangle, T1, is the difference between the y-coordinates of the two points: 4 - 0 = 4. The base of T1 is the difference between the x-coordinates: 3 - 0 = 3. So the rise/run ratio for T1 is 4/3.

The height of the second triangle, T2, is the difference between the y-coordinates of the two points: 0 - 4 = -4. Note that because the slope of the line is negative, the height of the triangle is negative as well. The base of T2 is the difference between the x-coordinates: 3 - 0 = 3. So the rise/run ratio for T2 is (-4)/3, which simplifies to -1.33.

The slope of the line is defined as rise divided by run. In this case, the rise is -4 (because the line is descending) and the run is 3. So the slope is (-4)/3, which is approximately -1.33. We can see that the simplified ratio of the rise/run of each triangle is indeed equivalent to the slope of the line.

Answer:

the missing value of the side length is 19.04

Answer: 126in

Step-by-step explanation:

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5+10=24

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Keith took a four question test and got 1 and a half questions wrong. His final score is 2.5 out of 4, or 62.5%.

To calculate Keith's final score, you need to divide the number of correct answers by the total number of questions. In this case, Keith answered 2.5 out of 4 questions correctly. Therefore, his final score is 2.5 divided by 4, which equals 0.625. This is equal to 62.5%.
To summarize, Keith took a four question test and got 1 and a half questions wrong, giving him a final score of 62.5%.

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Work Shown:

1 km = 1000 m

5*(1 km) = 5*(1000 m)

5 km = 5000 m

Step-by-step explanation:

let x= m

1 km=1000m

5km= x.m

1km.x/1km=5000.km/1km

x=5000m

therefore 5km=5000m

Answer:c 4.2 cups

Step-by-step explanation:

just do 63 divided 15

Total volume of the shape is 124 cm³

A cuboid is a three-dimensional solid shape that has six rectangular faces or sides, where each face meets at a right angle with its adjacent faces.

The formula for the volume of a cuboid is:

Volume = Length x Width x Height

So, the Volume of first cuboid = 3 × 4 × 5 = 60 cm³

and the Volume of second cuboid = 2 × 4 × 8 = 64 cm³

Total volume of the shape = Volume of first cuboid + Volume of second cuboid

Total volume of the shape = 60 cm³ + 64 cm³

Total volume of the shape = 124 cm³

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Therefore , the solution of the given problem of function comes out to be even though the two functions' maximum numbers are different, their final behavior is the same.

On the midterm exam, there will be inquiries about design, mathematics, each topic, and both actual and hypothetical locations. a summary of the connections between various components that work together to produce the same outcome. A service is made up of many unique parts that work together to produce unique outcomes for each input. Each post also has a particular location, that could be the enclave, an area, or even something completely different.

Here,

When x = 2, the maximum value of function f is 6, and

when x = -2, the highest value of function g is 3.

Both functions result in the same action in the end.

Both functions move closer to positive infinity as x gets closer to positive or negative infinity.

This is due to the positive quadratic component that dominates the behavior of the leading term in both functions as x increases in magnitude.

As a result, even though the two functions' maximum numbers are different, their final behavior is the same.

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The area of the equilateral triangle is 36√3 square units

What is area of the equilateral triangle?

Area of an equilateral triangle is equal to(√3/4)a², where an is the length of the triangle's side.

In an equilateral triangle, the center, the centroid, and the circumcenter coincide.

The distance between the center and a vertex is 6cm, which is also the radius of the circumcircle.

The side length is [tex]6(3)^{1/2}[/tex], which is twice the length of the radius.

So, the radius of the circumcircle is 6 cm, and the length of each side of the equilateral triangle is 12 cm.

The area of an equilateral triangle with side length s is given by:

A = (s² * √3) / 4

Substituting s = 12, we get:

A = (12² * √3) / 4

= 36√3

Therefore, the area of the equilateral triangle is 36√3 square units.

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The system of linear inequalities to model the number of hours that you could work at each location in a week is:

x ≥ 4

x + y ≤ 15

What is system of linear inequality?

A system of linear inequalities is a set of two or more linear inequalities with the same variables. It describes a region in the coordinate plane that satisfies all of the inequalities in the system.

In this case, we are trying to model the number of hours that someone could work at two different jobs.

The first inequality given is that the person must work at least 4 hours per week at the trampoline park. Let x be the number of hours worked at the trampoline park. This can be represented as:

x ≥ 4

The second inequality given is that the total number of hours worked at both jobs cannot be greater than 15. Let y be the number of hours worked at the landscaping company. Then, the total number of hours worked can be represented as:

x + y ≤ 15

Together, these two inequalities form a system of linear inequalities that model the possible number of hours that the person can work at each job in a given week.

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The solution set of the inequality -x - 8 < 16 is graphed in the number line at the end of the answer.

Here we want to see which number line represents the solution set of the inequality:

-x - 8 < 16

First, let's solve the inequality by isolating x, then we will get:

-x - 8 < 16

-8 - 16 < x

-24 < x

That is the inequality solved, the graph of this will be an open circle at x = -24 and then a line that goes to the right, like in the image posted at the end of this answer.

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The inequality "w < 30" describes the weeks for which Halimah will put money in the bank instead of buying an oud. It means she must save for less than 30 weeks to have less than $300 saved.

Let's assume the number of weeks Halimah saves money is represented by the variable "w".

Halimah saves $10 per week, so the total amount of money she saves after "w" weeks is:

Total amount saved = $10 x w

According to the problem, Halimah will put the money in the bank instead of buying an oud if she saves less than $300. Therefore, the inequality that describes the number of weeks for which Halimah will put money in the bank is:

$10 x w < $300

Simplifying the inequality:

w < 30

Therefore, the inequality that describes the number of weeks for which Halimah will put money in the bank is "w < 30".

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Complete question:

Halimah saves $10 per week for w weeks to buy an oud. If she saves less than $300, she will put the money in the bank instead of buying an oud.

What inequality describes the number of weeks for which Halimah will put money in the bank?

The base-10 expansion after calculations, of 123 comes up as -: 123 = 1 x 10^2 + 2 x 10^1 + 3 x 10^0.

The given statement is about finding the last digit of the base-b expansion of an integer n, and a base b. We can find the last digit of the base-b expansion of n by performing the division algorithm to find n = qb + r. The remainder r is the last digit. By repeating the process with q instead of n, we find the next digit, and so on.

That means we can determine all the digits one by one by repeating this process. Let's take an example: Suppose we need to find the last digit of 123 in base 10. We can use the division algorithm to find 123 = 12 x 10 + 3. Here, the remainder 3 is the last digit. Now, to find the second-last digit, we repeat the process with q=12 instead of n=123.

That is, 12 = 1 x 10 + 2. Here, the remainder 2 is the second-last digit. Finally, to find the third-last digit, we repeat the process with q=1 instead of n=12. That is, 1 = 0 x 10 + 1. Here, the remainder 1 is the third-last digit.

Therefore, the base-10 expansion of 123 is 123 = 1 x 10^2 + 2 x 10^1 + 3 x 10^0.

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To the nearest tenth, the length of each side of the equilateral triangle is roughly [tex]10(\sqrt{(3) - 1)[/tex].

An equilateral triangle has the following three characteristics: identical lengths on all three sides. The three angles are identical. Three symmetry lines may be seen in the figure.

All of the triangle's sides are equal in length since it is equilateral. Call this length "s" for short.

The distance from vertex A to side x, measured in altitude, is equal to the length of side x. Call the intersection of the altitude and side x "P" for short.

The length of AP is [tex](s/2) * \sqrt{}[/tex] because we know that the altitude from vertex A creates a triangle with sides of 30-60-90. (3).

Since side BP is half the length of side AB, we also know that its length is (s/2).

As a result, x's length equals the product of AP and BP:

x = AP + BP

= (s/2) * [tex]\sqrt{(3) + (s/2)[/tex]

= [tex](s/2)(\sqrt{(3) + 1)[/tex]

We are told that x equals 10. We may put the formula we discovered for x equal to 10 and do the following calculation to find s:

[tex](s/2)(\sqrt{(3) + 1)[/tex] = 10

The result of multiplying both sides by two is:

[tex]s(\sqrt{(3) + 1) = 20[/tex]

When you divide both sides by [tex](\sqrt{(3) + 1)[/tex], you get:

[tex]s = 20/(\sqrt{3) + 1)[/tex]

The result of multiplying the numerator and denominator by the conjugate of [tex](\sqrt{(3) + 1), (\sqrt{(3) - 1)[/tex], is as follows:

s = [tex]20(\sqrt{3) - 1)/(3 - 1)[/tex]

= [tex]10(\sqrt{(3) - 1[/tex]

As a result, to the nearest tenth, the length of each side of the equilateral triangle is about [tex]10(\sqrt{(3) - 1[/tex].

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Therefore, the equation of the function in slope-intercept form is: y = 24x - 18.

An equation is a mathematical statement that asserts the equality of two expressions, often containing variables. It typically consists of two expressions separated by an equal sign. The expressions on either side of the equal sign may contain constants, variables, operators (such as +, -, ×, ÷), and functions.

Here,

We can use the two given points to find the slope and y-intercept of the function, and then write the equation of the function in slope-intercept form y = mx + b.

The slope of the function can be found using the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) = (1, 6) and (x2, y2) = (3, 54):

m = (54 - 6) / (3 - 1) = 24

So the slope of the function is 24.

To find the y-intercept, we can use one of the two given points and the slope of the function:

y = mx + b

6 = 24(1) + b

b = -18

So the y-intercept of the function is -18.

Therefore, the equation of the function in slope-intercept form is:

y = 24x - 18

Any equation in this form with the same slope and y-intercept will represent the same function passing through the given points.

For example, y = 24x - 18, y = 24x - 20, and y = 24x - 16 are all equations that could represent the function passing through the points (1, 6) and (3, 54).

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Bytaking the quotient between the probabilities we can see that Getting a 17 is three times more likely to get a 18.

If you toss 3 dices with 6 sides each, then the total number of combinations is:

6*6*6 = 216

Now, the outcomes that add up to 18 are:

dice 1, dice 2, dice 3, sum:

6            6         6       , 18

The outcomes that add up to 17 are:

dice 1, dice 2, dice 3, sum:

5           6         6       , 17

6            5         6       , 17

6            6         5       , 17

So the probabilities are:

P(18) = 1/216

P(17) = 3/16

The quotient gives:

P(17)/P(18) = 3

Getting a 17 is 3 times more likely to get a 18.

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The center of a dilation is a fixed point in the plane about which all points are expanded or contractedAnswer:

Step-by-step explanation:

Answer:

√1.5

Step-by-step explanation:

As a fraction, the square root of 3/2 can be expressed as √1.51 or just as √1.5.

If you know 63 people have swim suits on and 43 have sunglasses, 32 people have swim suits on but not sunglasses.

To find out how many people have swim suits on but not sunglasses, we can use the principle of inclusion-exclusion.

We know that there are 75 people in the park, and 63 of them have swim suits on. We also know that 43 people have sunglasses. However, some people have both swim suits and sunglasses. Let's denote the number of people who have both by x. Then we can use the formula:

total = swim suits + sunglasses - both

Substituting in the given values, we get:

75 = 63 + 43 - x

Simplifying, we get:

x = 31

Therefore, 31 people have both swim suits and sunglasses, and the number of people who have swim suits on but not sunglasses is:

63 - 31 = 32

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The polynomial that represents the area of the shaded region is 7x-1 ( optionA)

The space enclosed by the boundary of a plane figure is called its area. The area of a figure is the number of unit squares

Therefore, the area of the shaded region = area of the big rectangle - area of the small rectangle

area of the big rectangle = l×b

= (x-1)(x+5)

= x²+5x -x -5

= x²+4x-5

area of the small rectangle = l×b

=( x+1)(x-4)

= x²-4x+x-4

= x²-3x-4

therefore area of the shaded part

= x²+4x-5 - (x²-3x-4)

= x²+4x-5-x²+3x+4

collect like terms

x²-x²+4x +3x+4-5

= 7x -1

therefore the polynomial that represents the area of the shaded part is 7x-1

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Answer:

y - (-4) = 6(x - 3)

y - 2 = -3(x - 4)

y - (-7) = 1(x - (-2))

y - 0 = -1(x - 4)

Answer:

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

Step-by-step explanation:

8x² + 2x - 3

= 8x² - 4x + 6x - 3

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

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

So, the factor is (2x - 1) (4x + 3)

Harold therefore walks an average distance of 10 metres when moving from one location to another.

All the points in a plane that are equally spaced from a fixed point known as the centre make up a circle, which is a geometric form. The radius of a circle is the separation between any two points on the circle and its centre. A circle's diameter is defined as a line segment whose endpoints are on the circle and which goes through the centre of the circle. Circles are helpful in many areas of mathematics and science due to a number of significant characteristics.

given

A circle with a dimension of 100 metres has a circumference of d, where d is the diameter. As a result, this circle's diameter is:

C = d = (100) = 100 m

Harold will walk from one spot to the next after completing 1/6

of the circle's circumference because the circle's circumference has six points that are all equally spaced apart. As a result, Harold travels the following distance between each location:

Distance equals 1/6 * C * 1/6 * 100 * (50/3) metres.

b) The average of the distances between each location, which we just discovered to be (50/3) metres, represents the average distance that Harold covers when moving from one place to another. The circle has six evenly distributed points, so the average distance travelled by Harold is:

(Total distance travelled) / Mean distance (Number of segments)

Total distance travelled equals the distance between two adjacent locations on the circle, which is C/2, or (1/2) 100 metres, or 50 metres.

Segment count equals number of marks - 1 (i.e., 6 - 1 = 5).

The average distance Harold travels while strolling is as follows:

Typical distance is calculated as (Total distance travelled) / (Number of segments), which equals (50) / 5 = 10 metres.

Harold therefore walks an average distance of 10 metres when moving from one location to another.

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