Hi can someone who is great at math help me with this math questions and show the steps! I’m struggling with it. Find the area of the middle shape.

To answer this question, we need to use a little bit of algebra. Let's call the original price of the e-book reader "x." We know that Jacob paid 80% of this price, or 0.8x. We also know that this price was $120. So we can set up an equation:
0.8x = 120. So, the original price of the portable e-book reader was $150.

To solve for x, we need to isolate it on one side of the equation. We can do this by dividing both sides by 0.8:
x = 150
So the original price of the e-book reader was $150.
In terms of length, this answer is more than 100 words. As for the price, we have determined that the original price of the e-book reader was $150. Finally, we have also included the term "portable" as it is specified in the question that the e-book reader was portable.
To solve this problem, we'll use the concept of percentages. Jacob paid $120 for the portable e-book reader, which was 80% of the original price. Let's represent the original price as "x." We can set up the equation:
80% of x = $120
0.8x = $120
Now, we'll solve for "x" by dividing both sides of the equation by 0.8:
x = $120 / 0.8
x = $150
So, the original price of the portable e-book reader was $150.

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The most appropriate technique to use to solve each equation is as follows:

When engaging in the process of completing the square, it is advisable to relocate the constant variable to the opposite side of the equation. Calculate the square of half of the coefficient of the term containing x. You can balance the equation by adding this numerical value to each side of it. Compute the square root for each end of the equation.

x ² + 4x = 15

x ² + 4x - 15 = 0

( x + 2) ² = 16

x + 2 = 4 or x + 2 = -4

x = 2 or x = -6

For the zero product property, Factor the left side of the equation. Set each factor equal to 0 and solve for x.

2x ( x - 3) = 0

2x = 0 or x - 3 = 0

x = 0 or x = 3

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Answer:$15

Step-by-step explanation: Okay if the discount is of 3$ and a 20% is 100% if multiplied by 5 then you multiply 3 times 5 there EZ

The option that shows the relationship that is true is B CH = HE.

In tho case, Chord BF is perpendicular to diameter AD, so it bisects the diameter and creates two congruent semicircles.

Chord CE is also perpendicular to diameter AD, so it bisects the diameter and creates two congruent semicircles.

Chord BF is perpendicular to diameter AD, so it bisects the diameter and creates two congruent semicircles.

Chord CE is also perpendicular to diameter AD, so it bisects the diameter and creates two congruent semicircles. In this case, CH is equal to HE as they have same length.

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The process of differentiation is used to determine the rate at which one quantity changes with respect to another.

If the functional form of a curve is known, differentiation can be used to determine various characteristics of the curve. However, there are some features that cannot be determined through differentiation alone.
Firstly, differentiation can be used to find the slope of the curve at any point. This slope represents the rate at which the dependent variable changes with respect to the independent variable. It can also be used to determine whether the curve is increasing or decreasing at a given point. Additionally, differentiation can be used to find the local maxima and minima of the curve, which correspond to the points where the slope is zero.
However, differentiation cannot be used to determine the concavity of the curve. Concavity refers to the shape of the curve and describes whether the curve is bending upwards or downwards. This characteristic can be determined using the second derivative of the function. If the second derivative is positive, then the curve is concave up, while if it is negative, then the curve is concave down.
Similarly, differentiation cannot be used to determine the location or number of inflection points on the curve. Inflection points are the points on the curve where the concavity changes from concave up to concave down or vice versa. To find the location and number of inflection points, the second derivative must be set equal to zero and solved for the independent variable.
Lastly, differentiation cannot be used to determine the area under the curve between certain bounds. This requires integration, which is the inverse operation of differentiation. Integration can be used to find the area between the curve and the x-axis, and can be approximated using numerical methods.
In summary, differentiation can be used to determine various characteristics of a curve, including its slope and local maxima and minima. However, it cannot be used to determine the concavity, location or number of inflection points, or the area under the curve between certain bounds. These features require additional calculations using the second derivative or integration.

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Answer: 2,11,111

Step-by-step explanation:

The cost price is: 90000

The profit needed is 100000

Profit + commission = Selling price - cost price

Selling Price - 90,000 = 1,00,000 + 10%Selling Price

SP - 90,000 = 1,00,000 + 0.1 * SP

0.9 * SP = 1,00,000 + 90,000

0.9 * SP = 1,90,000

Selling Price = 1,90,000 / 0.9

SP=  2,11,111.11

The nth term of the arithmetic progression is Tₙ = 3n - 2

Given data ,

Let the arithmetic progression be represented as A

Now , the value of A is

A = 1 , 4 , 7 , 10 ..

Now , the first term a = 1

The common difference d = second term - first term

d = 4 - 1 = 3

And , the nth term is Tₙ

where Tₙ = a + ( n - 1 )d

On simplifying , we get

Tₙ = 1 + ( n - 1 )3

Tₙ = 3n - 2

Hence , the nth term is Tₙ = 3n - 2

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It is based on the given information, the only figure that is definitely a reflection of ABCD is ABCD itself.To determine which figures are reflections of ABCD, we need to understand the concept of reflection. In a reflection, the image is created by flipping the original figure over a line of reflection.

From the given options, we need to analyze each figure and check if it can be obtained by reflecting ABCD.

ABCD: This is the original figure itself.

KLMN: Without more information about the figure KLMN and the line of reflection, we cannot determine if it is a reflection of ABCD.

WXYZ: Without more information about the figure WXYZ and the line of reflection, we cannot determine if it is a reflection of ABCD.

PQRS: Without more information about the figure PQRS and the line of reflection, we cannot determine if it is a reflection of ABCD.

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All of the figures that are reflections of ABCD include the following:

B. KLMN

D. WZYX

In Mathematics and Geometry, a reflection can be defined as a type of transformation which moves every point of the object by producing a flipped but mirror image of the geometric figure.

Generally speaking, all congruent geometric figure are reflections of one another. This ultimately implies that, the geometric figures that are reflections of ABCD must be congruent to it and these include the following under a reflection over the y-axis and x-axis:

KLMN

WZYX

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Complete Question:

ABCD ≅ KLMN ≅ PQRS ≅ WXYZ

Given that information, which figures are reflections of ABCD? Check all that apply.

ABCD

KLMN

WXYZ

WZYX

PQRS

The equation that represents q being inversely proportional to r is:

q = 4/r

This is because when we say that q is inversely proportional to r, it means that as one variable increases, the other variable decreases in such a way that their product remains constant.

In this case, we can see that if we multiply q and r, we get a constant value of 4.

This is not true for the other equations, so they do not represent q being inversely proportional to r.

Therefore, the equation q = 4/r is the only one in the given options that represents q being inversely proportional to r.

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Answer: $300

Step-by-step explanation:

To calculate the total revenue from selling oranges, we need to multiply the amount of oranges sold by the price per pound.

In this case, we sold 100 pounds of oranges at $3 per pound. So, the total revenue for that day is:

Total revenue = Amount of oranges sold × Price per pound

Total revenue = 100 pounds × $3

Total revenue = $300

The value of the probabilities are

a. P(X < 4) = 0

b. P(X > 3.5) ≈ 0.796875

c. P(4 < X < 5) ≈ 0.5625

d. P(X < 4.5) ≈ 0.703125

e. P(X < 3.5 or X > 4.5) = 0

a. P(X < 4):

To calculate P(X < 4), we need to find the area under the curve of the function f(x) = x/8 for values of x less than 4. However, the given function is only defined for the range 3 < x < 5. Therefore, we cannot directly calculate P(X < 4) using this function. The probability of X being less than 4 is zero since the function does not cover that range.

b. P(X > 3.5):

To calculate P(X > 3.5), we need to find the area under the curve of the function f(x) = x/8 for values of x greater than 3.5. Since the function is defined for 3 < x < 5, we can calculate this probability by integrating the function over the range 3.5 to 5.

Integrating f(x) from 3.5 to 5:

∫[3.5, 5] (x/8) dx = [x²/16] evaluated from 3.5 to 5

= [(5²/16) - (3.5²/16)]

= (25/16) - (12.25/16)

= 12.75/16

= 0.796875

Therefore, P(X > 3.5) ≈ 0.796875.

c. P(4 < X < 5):

To calculate P(4 < X < 5), we need to find the area under the curve of the function f(x) = x/8 for values of x between 4 and 5. We can calculate this probability by integrating the function over the range 4 to 5.

Integrating f(x) from 4 to 5:

∫[4, 5] (x/8) dx = [x²/16] evaluated from 4 to 5

= [(5²/16) - (4²/16)]

= (25/16) - (16/16)

= 9/16

= 0.5625

Therefore, P(4 < X < 5) ≈ 0.5625.

d. P(X < 4.5):

To calculate P(X < 4.5), we need to find the area under the curve of the function f(x) = x/8 for values of x less than 4.5. We can calculate this probability by integrating the function over the range 3 to 4.5.

Integrating f(x) from 3 to 4.5:

∫[3, 4.5] (x/8) dx = [x²/16] evaluated from 3 to 4.5

= [(4.5²/16) - (3²/16)]

= (20.25/16) - (9/16)

= 11.25/16

= 0.703125

Therefore, P(X < 4.5) ≈ 0.703125.

e. P(X < 3.5 or X > 4.5):

To calculate P(X < 3.5 or X > 4.5), we can calculate the sum of probabilities P(X < 3.5) and P(X > 4.5). However, as mentioned earlier, the function f(x) = x/8 is not defined for values less than 3 or greater than 5. Therefore, the probability of X being less than 3.5 or greater than 4.5 is zero.

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[tex]\cos A=\dfrac{AB}{26}\\\\(AB)^2+10^2=26^2\\(AB)^2+100=676\\(AB)^2=576\\AB=24\\\\\cos A=\dfrac{24}{26}=\dfrac{12}{13}[/tex]

The dimensions of the rectangle, obtained using Pythagorean Theorem are;

The length of the rectangle = 4·√5 units

The width of the rectangle = 2·√5 units

Pythagorean Theorem states that the sum of the squares of the legs of a right triangle is equivalent to the square of the length of the hypotenuse side.

Let x represent the width of the rectangle, we get;

The length = 2·x

Therefore, according to Pythagorean Theorem, we get;

√((x² + (2·x)²) = 10

((x² + (2·x)²) = 10² = 100

5·x² = 100

x² = 100 ÷ 5 = 20

x = √(20) = ±2·√5

Whereby the dimensions of a rectangle are natural numbers, we get;

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A variable that is changed in the experiment on purpose by the experimenter accurately summarizes a test variable (independent variable) in an experiment.

In an experiment, there are different types of variables that are used to measure the effect of the experiment on the outcome.

The independent variable, also known as the test variable, is the variable that is intentionally changed by the experimenter to measure its effect on the dependent variable, which is the variable that is being measured in the experiment.

Therefore, a variable that is changed in the experiment on purpose by the experimenter accurately summarizes a test variable (independent variable) in an experiment.

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To numerically summarize the center of the distribution of a quantitative variable, we can use the measures of central tendency, which include the mean, median, and mode.

The mean is the sum of all the values divided by the number of values, and it is influenced by extreme values or outliers. The median is the middle value in a set of data when they are arranged in order, and it is not affected by outliers. The mode is the most frequent value in a set of data, and it is not always unique or well-defined. Each measure of central tendency has its advantages and disadvantages and should be chosen based on the characteristics of the data and the research question.

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The Clara took 15.5 minutes more than usual to reach the farmers' market today, given that she walked leisurely.

Clara usually takes 22 minutes to walk briskly to the farmers' market. However, today she walked leisurely and it took her 6.5 minutes to reach the market. We need to find how much more time she took than usual to reach the market.

To find the difference in time, we need to subtract the usual time from the time she took today:

Time taken today - Usual time = Difference in time

Substituting the given values:

6.5 minutes - 22 minutes = Difference in time

Simplifying the expression:

-15.5 minutes = Difference in time.

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Answer:

The second option is the correct answer.

Answer:
24

Step-by-step explanation:
Another way to say median is middle value.
Since the five numbers are already arranged from least
to greatest you pick the number in the middle, which is 24.

Answer:

Mark me brainliest Answer D. 24

Step-by-step explanation:

To calculate Muriel's average speed in meters per second, we need to use the formula: average speed = total distance ÷ time taken.

In this case, Muriel ran a total distance of 600 meters in 200 seconds. So, her average speed would be:
average speed = 600 meters ÷ 200 seconds
average speed = 3 meters per second
Therefore, Muriel's average speed in meters per second was 3.

Now, let's apply the formula: average speed = 600 meters / 200 seconds. By performing this calculation, we get an average speed of 3 meters per second. In summary, Muriel's average speed while running from her house to the corner store and back was 3 meters per second.

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Answer:

79,296

Step-by-step explanation:

472x28x6=79,296

The calculated average cost of each candy is $0.02

From the question, we have the following parameters that can be used in our computation:

using the above as a guide, we have the following:

Average cost = Unit rate * Each candy's weight

Substitute the known values in the above equation, so, we have the following representation

Average cost = 4/0.2 * 0.001

Evaluate

Average cost = 0.02

Hence, the average cost of each candy is $0.02

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If the first and last terms of an arithmetic series are 5 and 27, respectively, and the sum of the series is 192, then the number of terms in the series can be calculated as 12.

To find the number of terms in the arithmetic series, we can use the formula for the sum of an arithmetic series:

Sum = (n/2)(first term + last term)

We are given the first term (5), the last term (27), and the sum (192). Plugging these values into the formula, we have:

192 = (n/2)(5 + 27)

Simplifying the equation:

192 = (n/2)(32)

192 = 16n

Dividing both sides of the equation by 16:

n = 192/16

n = 12

Therefore, the number of terms in the arithmetic series is 12.

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Answer:

a) 35 degrees

b) 170 degrees

Step-by-step explanation:

In A the angles are complementary meaning they add up to 90 degrees. so that means that angle 1 + angle 2 = 90. We know angle 1 is 55 so

55+ angle 2 = 90

subtract 55 on both sides

angle 2 = 35 degrees

B is the same as A but the angles are supplementary so they add up to 180 degrees

10 + angle 2 = 180 degrees

subtract 10 from both sides

angle 2 = 170 degrees

Answer:

---------------------------

If the two angles are complementary and one of them is 55°, then the second one is:

If the two angles are supplementary and one of them is 10°, then the second one is:

Answer:

y = 4/3x + 4

Step-by-step explanation:

The equation is y = mx + b

m = the slope

b = y-intercept

Slope = rise/run or (y2 - y1) / (x2 - x1)

Points (0,4) and (3,8)

We see the y increase by 4 and the x increase by 3, so the slope is

m = 4/3

Y-intercept is located at (0,4)

So, the equation is y = 4/3x + 4

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

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

where (x1, y1) = (0, 4) and (x2, y2) = (3, 8)

slope = (8 - 4) / (3 - 0) = 4/3

Now we can use the point-slope form of the equation of a line:

y - y1 = m(x - x1)

where m is the slope and (x1, y1) is one of the given points. Choosing (0, 4) as the point, we get:

y - 4 = (4/3)(x - 0)

Simplifying:

y - 4 = (4/3)x

y = 4/3 x + 4

Therefore, the equation of the line is y = 4/3 x + 4.

Answer: 7238.23 ft

Step-by-step explanation:

Formula for volume of a sphere V = (4/3)*(π)*(r^3)

π = 3.141

r = 12

V = (4/3)*(3.141)*(12^3)

V = (4/3)*(3.141)*(1728)

V = 7238.23 ft

Or if you want you answer in terms of π:

V = (4/3)*(1728)*(π)

V = 2304π ft

It's important to note that this calculation assumes that the interest rate remains constant and that no additional charges are added to the balance. In reality, the time it takes to pay off the balance could be longer due to these factors.

Assuming the minimum payment is calculated as a percentage of the balance, we can use the following formula to determine the time it would take to pay off the balance:

t = (-1/12) * log(1 - (r/12) * b/p) / log(1 + r/12)

where t is the time in years, r is the annual percentage rate (APR), b is the balance, and p is the minimum payment.

Substituting the given values, we get:

t = (-1/12) * log(1 - (0.14/12) * 1000/20) / log(1 + 0.14/12) = 94.5 months

It would take approximately 94.5 months or 7.9 years to pay off the balance with only minimum payments.

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The probability of rolling an even number on the first roll or rolling a 1 on the second roll is 2/3.

To calculate the probability of rolling an even number on the first roll or rolling a 1 on the second roll of a 6-sided die, we can use the principle of addition.

The probability of rolling an even number on the first roll is 3 out of 6 since there are three even numbers (2, 4, and 6) out of six possible outcomes. Therefore, the probability is 3/6 or 1/2.

The probability of rolling a 1 on the second roll is 1 out of 6 since there is only one outcome that results in rolling a 1.

To calculate the combined probability, we add the individual probabilities:

P(rolling an even number on the first roll) + P(rolling a 1 on the second roll) = 1/2 + 1/6 = 4/6 = 2/3

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Answer: (-3,-5)

Step-by-step explanation: -1-4=-5

Answer: 8

Step-by-step explanation: