Need help With This Math problem​

The area of a rhombus is 399 in².

What is the area of a rhombus?

A rhombus is a quadrilateral whose four sides all have the same length. Another term for this shape is an equilateral quadrilateral since all of its sides are equal in length.

Here, we have

Given: A rhombus with a base of 21 inches and a height of 19 inches.

We have to find the area of a rhombus.

As per the given rhombus,

Base = 21 inches

Height = 19 inches

The area of the rhombus = base ×  height

⇒ 21 × 19 = 399 in²

Hence, the area of a rhombus is 399 in².

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Answer:

to simplify the other dude, its 399 in2

Step-by-step explanation:

hope this helps your day :P

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One identity that we can write here is:

cos²(θ/2) = - sin²(θ/2) + 1

Here we want to find something that is equal to cos²(θ/2) for every value of theta, that will be an identity.

The general identity for trigonometric functions is:

cos²(θ) + sin²(θ) = 1

So we can rewrite this as:

cos²(θ) = - sin²(θ) + 1

If instead of theta, the argument is theta over two, we could rewrite this as:

cos²(θ/2) = - sin²(θ/2) + 1

That is the identity.

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Answer:

Reflection in the x-axis

Step-by-step explanation:

f(x) = √x

Shift left 3 units:

f(x + 3) = √(x + 3)

Reflection in x-axis:

-f(x + 3) = -√(x + 3)

Vertical stretch:

-3.f(x + 3) = -3√(x + 3) = g(x)

g(1) = -3√((1) + 3)

g(1) = -6

Answer:

See below.

Step-by-step explanation:

We are asked for the diameter, radius, and area of a circle.

We are given the Circumference.

We should know that;

[tex]Circumference = (diameter)\pi[/tex]

[tex]Circumference = 24\pi[/tex] (Exact)

This means that the Diameter is 24.

The Radius is [tex]\frac{1}{2}[/tex] of the Diameter.

This means that the Radius is 12.

The area of a circle is represented as;

[tex]Area = \pi(radius)^2[/tex]

We have the requirements to find the area, with the value of the radius.

Solve for the area;

[tex]Area = \pi(12)^2[/tex]

[tex]Area = 144 \pi[/tex] (Exact)

[tex]Area = about \ 452.39.[/tex] (Approx.)

The total amount that Rahul will have is 108,006.20.

Compound interest is a type of interest where the interest earned on a principal amount is added to the principal, and the new total amount becomes the basis for calculating interest in the next period.

In other words, the interest is earned not only on the principal amount but also on the accumulated interest.

The formula for compound interest is:

Here we have, Rahul's plans to invest $25,000 in a retirement account that compounds 6% monthly.

From the data,

The principal amount, P = 25000

Rate of interest, r = 6% = 6/100 = 0.06

Time period, t = 25 years  

Number of compounds, n = 12  [ Since compounded annually ]

By using the formula, A = P (1 + r/n)^(n×t)  

A = 25000 [ 1 + 0.6/12]⁽¹²ˣ²⁵⁾

A = 25000 [ 1 + 0.005]⁽³⁰⁰⁾

A = 25000 [1.005]⁽³⁰⁰⁾  

A = 108,006.20 (rounded to the nearest cent)  

Therefore,

The total amount that Rahul will have is 108,006.20.

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The equation can be written as:

(2 + 1/3) + 3*(1/3)

And the solution, writen as a mixed number, is 3 + 1/3.

Here we have a diagram where we can see an addition (its an addition because of the direction of the arrow).

On the leftside we can see two whole squares and a one thid strip.

Then the number is:

2 + 1/3

And to that, we are adding 3 one third strips, then we are adding:

(2 + 1/3) + 3*(1/3)

That should be the equation

We can solve that equation to get:

2 + 1/3 + 3/3

= 2 + 1/3 + 1

= 3 + 1/3

That is the solution written as a mixed number.

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The area of the composite figure is 14.71 square units

The area of the composite figure is found by calculating the sum of the areas of the various parts.

The area of the figure = area of sector + area of triangle + area of trapezium

Area of sector = 135/360 * π * 2²

Area of sector = 4.71 square units

Area of triangle = ¹/₂ * 2 * 1

Area of triangle = 1 square unit

Area of trapezium = ¹/₂ (3 + 6) * 2

Area of trapezium = 9 square units

Therefore, area of composite figure =  (4.71 + 1 + 9) square units

The area of the composite figure = 14.71 square units

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66640 divided by 31 is approximately equal to 2149.68.

Division is a basic arithmetic operation that is used to split a quantity into equal parts or to find out how many times one quantity is contained within another quantity.

When 66640 is divided by 31, the result is:

66640 ÷ 31 =2149.68 (rounded to two decimal places)

Therefore, 66640 divided by 31 is approximately equal to 2149.68.

In general, when we perform division, we are asking the question "how many times does the divisor fit into the dividend?" The dividend is the number being divided, the divisor is the number we are dividing by, and the result is the quotient.,

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The value of the function (f+g)(x) = x² + 4x - 4.

An output variable and one or more input variables are at least two of the variables that make up a function. A mathematical equation may have any number of variables and says that two expressions are equivalent (none, one, or more). A function is frequently expressed as an equation, however not all equations are functions.

Given that,

f(x) = 4x + 2

g(x) = x² - 6

(f+g)(x) = f(x) + g(x) = 4x + 2 + x² - 6

(f+g)(x) = x² + 4x - 4

Hence, the value of the function (f+g)(x) = x² + 4x - 4.

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The volume of the top part of the pyramid is 13.4% of the total volume.

The amount of mass that a material has in relation to its volume is measured by its density. By dividing the substance's mass by volume, it is determined. Density is calculated as follows: density = mass/volume

A fundamental idea in physics, density is utilised in many branches of research and engineering, including the construction of effective engines and turbines, calculating the buoyancy of objects in fluids, and forecasting the behaviour of materials under stress.

Given that, average density of the entire pyramid is 4.7g/cm3 and that the bottom part has a mass of 972.8g.

The density is given as:

density = mass/volume

Substituting the value we have:

4.7g/cm3 = 972.8g/volume

volume = 207.23 cubic cm.

For the top part, density of 2.9g/cm3 and a mass of 92.8g. :

density = mass/volume

2.9g/cm3 = 92.8g/volume

volume = 32 cubic cm.

The percent of the top part with respect to total volume is:

percentage = (volume of top part / total volume) x 100

total volume = volume of top part + volume of bottom part

total volume = 32 cm3 + 207.23 cm3

total volume = 239.23 cm3

percentage = (32 cm3 / 239.23 cm3) x 100

percentage = 13.4%

Therefore, the volume of the top part of the pyramid is 13.4% of the total volume.

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cot (-859°) can be expressed as cot 41° an acute angle which is less than 45°

Trigonometry is used in navigation directions. Estimate the direction you need to place your compass to get a straight line. With the help of a compass and navigation trigonometric functions, it's easy to find a place or find the distance to see the horizon. 

A  Mathematical Statement which contains numbers and variables.

Angle: The two straight lines meeting at the vertex(a common point)

According to the question:

cot (-859) can be expressed as:

cot (-859 + 360x2)= cot (-859 +720)= cot (139)= cot (180 -139)= cot 41°(or)cot(-859) = cot(-859 + 180°x5)= cot (859 +900)= cot (41)°

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The angle measure of minor arc QS is 92 degrees, and the angle measure of angle QQS is 46 degrees.

What is Angle?

In geometry, an angle is a figure formed by two rays that have a common endpoint, called the vertex of the angle. The rays that form the angle are called the sides of the angle. Angles are typically measured in degrees or radians and are used to describe the amount of rotation between two intersecting lines or planes.

In a circle, the measure of an inscribed angle is equal to half the measure of the intercepted arc. Since QS intercepts the minor arc QR, the measure of angle QRS is equal to half the measure of the minor arc QS.

Therefore, if m∠QRS = 46, then m(arc QS) = 2×m∠QRS = 2×46 = 92 degrees.

Since the measure of an arc is equal to the measure of the central angle that intercepts it, and the sum of the measures of the central angles in a circle is 360 degrees, we have:

m(arc QS) + m(arc QR) = 360 degrees

Substituting the value of m(arc QS) that we found above, we get:

92 degrees + m(arc QR) = 360 degrees

Solving for m(arc QR), we get:

m(arc QR) = 360 degrees - 92 degrees = 268 degrees

Since QS is a minor arc of the circle, the measure of angle QQS is equal to half the measure of the arc QS. Therefore, we have:

m∠QQS = 0.5×m(arc QS) = 0.5×92 = 46 degrees

Therefore, the angle measure of minor arc QS is 92 degrees, and the angle measure of angle QQS is 46 degrees.

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Answer: Your welcome!

Step-by-step explanation:

N′(−11, −2), M′(−8, −1), O′ (−11, −5)

The image coordinates of N′M′O′ if the preimage is translated 7 units to the left are N′(−11, −2), M′(−8, −1), O′ (−11, −5). This is calculated by subtracting 7 from the x-coordinate of each point in the original triangle NMO. For example, the x-coordinate of point N in the original triangle is -4, so the x-coordinate of point N′ in the translated triangle is -4 - 7 = -11. The y-coordinate of point N does not change, so the y-coordinate of point N′ is also -2.

Answer:

To translate the triangle 7 units to the left, we need to subtract 7 from the x-coordinates of each vertex:

N' = (N_x - 7, N_y) = (-4 - 7, -2) = (-11, -2)

M' = (M_x - 7, M_y) = (-1 - 7, -1) = (-8, -1)

O' = (O_x - 7, O_y) = (-4 - 7, -5) = (-11, -5)

Therefore, the image coordinates of N'M'O' are (-11, -2), (-8, -1), and (-11, -5).

So the answer is N′(−11, −2), M′(−8, −1), O′ (−11, −5).

The price of Apples are $1.13 per pound and peaches are $0.63 per pound Option B

If pears cost $3 for a 4 pound bag, then the price per pound of pears is:

3/4 = $0.75 per pound

Since pears cost less per pound than apples but more per pound than peaches, we can set up the following inequality:

peaches < pears < apples

Substituting the known price per pound of pears, we get:

peaches < $0.75 < apples

Now, we can check each option to see which satisfies the inequality:

Apples are $1.13 per pound and peaches are $1.04 per pound:

$1.04 < $0.75 < $1.13

This option does not satisfy the inequality.

Apples are $1.13 per pound and peaches are $0.63 per pound:

$0.63 < $0.75 < $1.13

This option satisfies the inequality.

Apples are $1.13 per pound and peaches are $0.75 per pound:

$0.75 < $0.75 < $1.13

This option does not satisfy the inequality.

Apples are $0.63 per pound and peaches are $1.13 per pound:

$1.13 < $0.75 < $0.63

This option does not satisfy the inequality.

Therefore, the price per pound of apples and peaches that could be consistent with the given information is: apples are $1.13 per pound and peaches are $0.63 per pound.

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The result of simplifying this answer is (x - 1)2 = 16(y - 7) (y - 7) The equation for the parabola is presented here in vertex form.

A parabola is a U-shaped curve in mathematics that is produced by the graph of a quadratic function. It is a particular kind of conic section, which is a circle made when a plane and a cone cross each other. A quadratic function with the following standard form can depict a parabola: Y = ax2+bx+c where are constants a, b, and c. Which way the parabola expands depends on the sign of the coefficient a.

given

We can use the following formula to express the equation of a parabola given a focus and a directrix:

where (h,k) is the parabola's vertex, p is the separation between it and the centre, and the directrix is represented by the horizontal line y = k - p.

The centre in this instance is (1,11), and the directrix is y=3.

We also understand that p is the distance, in this instance 4 units, between the vertex and the focus (since the focus is 4 units above the vertex). Therefore, we can enter the numbers into the formula to obtain:

(x - 1)^2 = 4(4)(y - 7) (y - 7)

The result of simplifying this answer is (x - 1)2 = 16(y - 7) (y - 7) The equation for the parabola is presented here in vertex form.

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Triangle LMO is congruent to NMO because they are reflections of eachother.

The comparisons of the fractions given above is enumerated below.

1) To compare 1/8 and 1/9, I can find a common denominator by multiplying the denominators together. The common denominator is 8 x 9 = 72.

Then, I can convert each fraction to have a denominator of 72 by multiplying the numerator and denominator of each fraction by the appropriate factor. The result is 9/72 and 8/72. Since 9/72 is bigger than 8/72, I know that 1/8 is smaller than 1/9.

2) To compare 7/8 and 8/9, I can find a common numerator by multiplying the numerators together. The common numerator is 56. Then, I can convert each fraction to have a numerator of 56 by multiplying the numerator and denominator of each fraction by the appropriate factor. The result is 49/56 and 64/72. Since 64/72 is bigger than 49/56, I know that 8/9 is bigger than 7/8.

3) To compare 15/38 and 5/13, I can find a common numerator by multiplying the numerators together.

The common numerator is 195. Then, I can convert each fraction to have a numerator of 195 by multiplying the numerator and denominator of each fraction by the appropriate factor.

The result is 75/195 and 75/195. Since the numerators are the same, I can compare the denominators. Since 195 is bigger than 169, I know that 15/38 is smaller than 5/13.

4) To compare 5/9 + 7/12 and 1/2, I can compare each fraction to 1/2 separately.

First, 5/9 is smaller than 1/2 because 9 is bigger than 18, so each ninth is smaller than each half.

Next, 7/12 is also smaller than 1/2 because 12 is bigger than 6, so each twelfth is smaller than each half.

Therefore, both fractions added together (without actually adding them) will be smaller than 1/2.

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Answer:

To solve this problem, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

where:

A = the final amount

P = the principal (initial amount)

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the time (in years)

In this case, we have:

P = $200.00

r = 0.09 (9% expressed as a decimal)

n = 1 (compounded annually)

t = 5 years

Plugging these values into the formula, we get:

A = $200.00(1 + 0.09/1)^(1*5)

A = $200.00(1.09)^5

A = $200.00(1.538624)

A = $307.72

Therefore, after 5 years, Megan will have $307.72 in her account.

Step-by-step explanation:

The domain and the range of h(n) are the set of whole numbers

Given that

h(n) is the number of houses

The possible values of n and h(n) are whole numbers

So, we have

Based on the patterns in the sequence, we have

h(n) = n

So, we have

h(5) = 5

h(11) = 11

In (b), we have

h(n) = n

Given that

s(n) is the number of segments

Based on the patterns in the sequence, we have

s(n) = 2n

So, we have

s(4) = 8

s(7) = 14

Above, we have

s(n) = 2n

The above equation is a proportional equation

This means that

The growth pattern of s(n) is linear, with a constant rate of change

Above, we have

s(n) = 2n

Hence, the explicit of s(n) is s(n) = 2n

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The mistake is in the second step, the negative signs shouldn't be on the diagonal elements.

Here we can see that someone is trying to find an inverse matrix.

To get it, we need to change the order of the elements in the diagonal (thing that has ben done) and change the signs of the elements that are not in the diagonal (in the image we can see that this person changed the signs on the diagonal).

So there is the mistake, the negative signs should be in the 3 and the 5 in the second step.

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Answer:

One solution at (2, -1)

Step-by-step explanation:

You will want to write the equations for both pairs of points:

(-2,-3) and (0,-2)

The slope is the change in y over the change in x.  The first number of the ordered pairs is the x value and the second number in the ordered pair is the y values.  Find the change by subtraction

[tex]\frac{-2 - -3}{0 - -2}[/tex] = [tex]\frac{-2+ 3}{0 + 2}[/tex] = [tex]\frac{1}{2}[/tex]

The slope (m) is 1/2.

The y intercept is when x = 0.  In the point (0,-2) x is 0, so the y-intercept is -2.

The y-intercept (b) is -2.

y = mx + b  Substitute 1/2 for m and -2 for b

y = [tex]\frac{1}{2}[/tex]x - 2

(0,3) and (1,1)

The slope is

[tex]\frac{1-3}{1-0}[/tex] = [tex]\frac{-2}{1}[/tex] = -2

The slope is --2.

The y intercept is 3.

y = mx + b  Substitutes -2 for m and 3 for b.

y = -2x + 3

Set the 2 equation equal to each other and solve for x.

-2x + 3 = 1/2 x -2   Multiply all the way through by 2 to clear the fraction.

-4x + 6 = x - 4   Add 4x to both sides

-4x + 4x + 6 = x + 4x -4

6 = 5x -4  Add 4 to both sides

6 + 4 = 5x - 4 + 4

10 = 5x  Divide both sides by 5

2 = x

Take either of the two original equations and substitute 2 for x and solve for y

y = -2x + 3

y = -2(2) + 3

y = -4 + 3

y = -1

The solution is (2,-1)

Helping in the name of Jesus.

Answer:

5 miles / Maria's time = 4 miles / Gus's time

Since both Maria and Gus run for equal periods of time, we can set their times equal to each other:

5 miles / t = 4 miles / t

where t is the time it takes both of them to run.

Simplifying this equation, we can see that the distance Maria runs (M) is equal to the distance Gus runs (G) multiplied by 5/4:

M = (5/4)G

Therefore, the correct equation that relates the variables defined is:

M = (5/4)G

This means that Maria's distance is 1.25 times Gus's distance. So, the correct answer is option B: M = 1.25G.

The area of the circular flower bed is approximately 78.54 square feet.

The circular flower bed's 10 foot diameter corresponds to a radius of 5 feet, or half the diameter. The area and circumference of the circular flower bed can be determined using the following data:

Circumference:

The formula for calculating a circle's circumference is:

C = 2πr

where the mathematical constant is roughly equivalent to 3.14159 and r is the circle's radius.

Using the values we were provided as replacements, we obtain:

C = 2π(5) \sC = 10π

We may calculate a rough estimate of the circumference using a calculator:

C ≈ 31.42 feet

As a result, the flower bed's circumference is approximately 31.42 feet.

Area:

The area of a circle is determined using the following formula:

A = πr²

Using the values we were provided as replacements, we obtain:

A = π(5)² \sA = 25π

We can calculate the area's value using a calculator as follows:

A area of 78.54 square feet.

Thus, the circumference of the flower bed is about 78.54 square feet.

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The linear model would be a reasonable way to predict the temperature as temperature determines the number of ice cream that would be sold.

Temperature is a unit of hotness and coldness that can be described in terms of any number of arbitrary scales. It also represents the direction wherein heat energy will naturally flow, from either a hotter (i.e., higher temperature) body to a colder body.

Temperature is not the same as the energy of such a thermodynamic system; for instance, an iceberg has a significantly larger total heat energy than a match, despite the fact that a match is burning at a significantly higher temperature. The linear model would be a reasonable way to predict the temperature as temperature determines the number of ice cream that would be sold.

Therefore, the linear model would be a reasonable way to predict the temperature as temperature determines the number of ice cream that would be sold.

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The growth rate is - 0.17

a. Growth rate =  (38-55)/100 = -0.17

This shows that it is decreasing

ii. Groth rate = 38-12.5)/(100-250)

= -0.17

This shows that it is decreasing as well

b. The relationship is a linear function. This is because rate of change of price and the number of days are equal

c. formula for game price in terms of days would be:

Price = -0.17*d + 55.

d = days

d. when price is 48.20

48.20 = -0.17d + 55

48.20 - 55 = -0.17d

d = 40

40 days after game was released

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The median value is 26.5, the first quartile is 24, the third quartile is 35.5, and the highest value is 38. The lowest value is thus 20.

We can plot the data on a number line to determine the data's least value, first quartile, median, third quartile, and greatest value:

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38\s| | | |

The leftmost number on the number line and the lowest value is 20.

We can split the data into four equal sections to determine the quartiles. The data's middle value is known as the median. We choose the average of the two middle values because there are an even number of data points. The midpoint is:

(26 + 27)/2 = 26.5 is the median.

We calculate the median of the lower half of the data to determine the first quartile:

(23 + 25)/2 = 24 for the first quartile.

We determine the median of the upper half of the data to determine the third quartile:

Third quartile: (34.5) ((34 + 37)/2)

The rightmost number on the number line, 38, has the highest value.

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By answering the above question, we may infer that We may reduce this equation to: Applying the rule that log base an of ab = b 4 = x Hence, x = 4.

A mathematical equation links two statements and utilises the equals sign (=) to indicate equality. In algebra, an equation is a mathematical assertion that proves the equality of two mathematical expressions. For instance, in the equation 3x + 5 = 14, the equal sign separates the numbers by a gap. A mathematical formula may be used to determine how the two sentences on either side of a letter relate to one another. The logo and the particular piece of software are usually identical. like, for instance, 2x - 4 = 2.

The equation may be changed to read:

x = log base 3 of 81.

81 being equivalent to 3 to the power of 4, we get the following:

x Equals log base 3 of 34.

We may reduce this to: Applying the rule that log base an of ab = b

4 = x

Hence, x = 4.

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Answer:

[tex]x^4-3x^2-x^2-4[/tex]

Step-by-step explanation:

Given information.

P(x) = R(x) - C(x)

[tex]R(x) = 2x^4-3x^3+2x-1[/tex]  and [tex]C(x) = 2x^4-x^2+2x+3[/tex]

[tex](2x^4-3x^3+2x-1) - (x^4-x^2+2x+3)[/tex]

Distribute the negative then solve by simplying either add or subtracting.

[tex](2x^4-3x^3+2x-1) +(-x^4+x^2-2x-3)\\[/tex]

[tex](2x^4-x^4)-3x^3-x^2+(2x-2x)+(-1-3)\\\\(x^4) -3x^3-x^2+(0x)-4\\\\x^4 -3x^3-x^2-4[/tex]

Answer:

y = 3/5x - 3

Step-by-step explanation:

slope (m) of line perpendicular to y = -5/3x is 3/5, the negative reciprocal of -5/3

use the point (5, 0) and the point-slope form to find b, the y-intercept:  

y - 0 = 3/5(x - 5)

y = 3/5x - 15/5

y = 3/5x - 3   equation is now in the slope-intercept form