5x+20=3x=4
help plssssssssssssssssssssssssss

Answer:

They ate a total of 7.5 apples.

Step-by-step explanation:

The total number of apples that these 4 students ate is:

2 + 2.5 + 1.25 + 1.75 = 7.5

Therefore, they ate a total of 7.5 apples.

Answer: 7.5

Step-by-step explanation: 2 + 2.5 = 4.5

4.5 + 1.25 = 5.75

5.75 + 1.75 = 7.5

The quotient of 13,756 divided 5 is 2, 753.

We have to divide 13756 by 5.

So, the division is

                          5 | 13765 | 2 7 5 3

                                10

                              ____

                                   37

                                   35

                                 ____

                                      26

                                      25

                                     ___

                                         15

                                          15

                                         ___

                                           0

Thus, the quotient is 2,753.

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Hi! To find the level of marketing expenditure that will maximize sales and the maximum sales value, we can follow these steps:

1. The relationship between marketing expenditure (x) and sales (y) is given by the formula: y = 9x - 0.20x^2 + 8.
2. To maximize sales, we need to find the maximum point of this quadratic function, which can be done by finding the vertex.
3. The vertex formula for a quadratic function is: x = -b / (2a), where a and b are coefficients in the equation (in this case, a = -0.20 and b = 9).
4. Calculate x (marketing expenditure) for the vertex: x = -9 / (2 * -0.20) = -9 / -0.40 = 22.50.
5. Round the marketing expenditure to 2 decimal places: 22.50.
6. Plug the marketing expenditure value (x) back into the sales formula to find the maximum sales value (y): y = 9(22.50) - 0.20(22.50)^2 + 8.
7. Calculate y: y = 202.50 - 0.20(506.25) + 8 = 202.50 - 101.25 + 8 = 109.25.
8. Round the maximum sales value to 2 decimal places: 109.25.

So, the level of marketing expenditure that will maximize sales is $22.50, and the maximum sales value is $109.25.

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There are 640 acres in 1 square mile. The area of a forest is increasing at a rate of 1 acre per decade. The rate at which the area of the forest is increasing, in square kilometers per decade is C) 0.0025 square kilometers per decade.

The area of the forest is increasing at a rate of 1 acre per decade. To find the rate in square kilometers per decade, we first need to convert acres to square miles, and then square miles to square kilometers.

1 acre = 1/640 square miles (since there are 640 acres in 1 square mile)

Now, we'll convert square miles to square kilometers using the given conversion factor (1 kilometer = 0.62 mile):

1/640 square miles * (1 km / 0.62 mile)^2 = 1/640 * (1 / 0.3844) square kilometers ≈ 0.00256 square kilometers

So, the closest answer to the rate at which the area of the forest is increasing is:

C) 0.0025 square kilometers per decade

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The required model is c = 0.03d+1.81.

Given are 4 entries, but we just need 2 to plot the relation lets pick the first two, we would be using the equation of a line in the two-point form,

c - c₁ / d - d₁ = c₂ - c₁ / d₂ - d₁

We, put in the points, (673,22) and (3277,101), we get,

c - 22 / d-673 = 0.03

c-22 = 0.03 (d-673)

c-22 = 0.03d-20.19

c-22 / d-673 = 101-22 / 3277-673 = 79 / 2604 = 0.03

c = 0.03d+1.81

Hence, the required model is c = 0.03d+1.81.

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The graphs cross at x=-1 and x=1. Those are the solutions to to the equation

We know that, If two functions are equal then there solution is the intersection point of the curves.

When we determine the graph the intersection points are (0,2) and (1,1.25).

The values of x of the intersection points are the solutions of the system

Using a graphing tool, there are two intersection points and therefore the solutions are x = -1 and x [ 1.

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Answer:

  y = 4 is line parallel to x-axis. In that line, each point's y-co-ordinate is 4.

1:. 3.0508

2:. 1.4665

3:. 0.7194

4:. 0.1166

5:. 3.3896

Its Fourier transform is also 0.

The Fourier transform of a function f(t) is defined as:

F(w) = (1/√(2π)) ∫[from -∞ to +∞] f(t) e^(-iwt) dt

Let's find the Fourier transform of the given function f(t) = sin 3t, k≤|t|≤2k and 0, |t|>2k.

For k≤|t|≤2k, we can write:

f(t) = sin 3t

= (1/2i) (e^(i3t) - e^(-i3t))

Using the Fourier transform properties, we can write:

F(w) = (1/2i) [∫[from -2k to -k] e^(i3t) e^(-iwt) dt + ∫[from k to 2k] e^(i3t) e^(-iwt) dt]

Applying the integral formula ∫ e^(ax) dx = (1/a) e^(ax) + C, we get:

F(w) = (1/2i) [(1/i(3-w))(e^(i(3-w)2k) - e^(i(3-w)k)) + (1/i(3+w))(e^(i(3+w)k) - e^(i(3+w)2k))]

Simplifying the above expression, we get:

F(w) = (1/2) [(sin(2kw-3) - sin(kw-3))/(kw-3) + (sin(kw+3) - sin(2kw+3))/(kw+3)]

For |t|>2k, f(t) = 0. Thus, its Fourier transform is also 0.

Therefore, the correct option is d. none of the above.

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If you invest $2,000 for 3 years at an interest rate of 6%, compounded every 6 months. The value of your investment at the end of the period is $2,397.39.

The interest rate is 6% and it is compounded every 6 months, so the period is 6 months. To calculate the value of the investment at the end of the period, we need to use the formula for compound interest:

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

Where:
A = the final amount.
P = the principal amount (initial investment)
r = the annual interest rate (6%).
n = the number of times the interest is compounded per year (2, since it's compounded every 6 months).
t = the time period in years (3)

Plugging in the numbers, we get:

A = 2,000(1 + 0.06/2)^(2*3)
A = 2,000(1 + 0.03)^6
A = 2,000(1.03)^6
A = $2,397.39

Therefore, the value of your investment at the end of the period is $2,397.39.

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Answer:

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

Area of square with side of 5 mm is:

Find total area of the figure:

Find the percent value of the ratio of areas of the square and full figure, which determines the probability we are looking for:

This is matching the choice C.

The derivative of the given function is:

y' = 10x^4 - 12x^2 + (27/4)x^2

To find the derivative of the given function, y = 2x^5 - 4x^3 + (9/4)x^3, we can use the power rule and the sum rule of differentiation.

The power rule states that the derivative of x^n is nx^(n-1), where n is any real number.

Using the power rule, we can find the derivative of each term in the function:

dy/dx (2x^5) = 10x^4
dy/dx (-4x^3) = -12x^2
dy/dx ((9/4)x^3) = (27/4)x^2

Using the sum rule, we can add the derivatives of each term to find the derivative of the function:

dy/dx (y) = dy/dx (2x^5) + dy/dx (-4x^3) + dy/dx ((9/4)x^3)
dy/dx (y) = 10x^4 - 12x^2 + (27/4)x^2

Therefore, the derivative of the given function is y' = 10x^4 - 12x^2 + (27/4)x^2.

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a rhombus is a parallelogram with a pair of opposite equal acute angles, a pair of opposite equal obtuse angles, and four equal sides.

in other words, it is a parallelogram with 4 equal sides, including a square as a special case.

the diagonal intersection point is the midpoint of both diagonals.

the diagonals intersect each other at a right angle (90°).

and they split each vertex angle in half.

so, they split the whole rhombus into 4 equal right-angled triangles.

and remember, the sum of all angles in a triangle is always 180°.

an "obtuse" angle means an angle larger than 90°.

an "acute" angle means an angle smaller than 90°.

because of all that, in the triangle PKE the angle K must be greater than 45° (90/2 = 45), so that the rhombus angle K can be "obtuse", as it must be twice the triangle angle K.

the triangle angle E is 90°.

so, the 16° must be triangle angle P.

and the triangle angle K is then

triangle angle K = 180 - 90 - 16 = 74°.

so, rhombus angle K = rhombus angle N = 2×74 = 148°

and triangle PMN angle N = 74°.

triangle PMN angle M = triangle PMN angle P = 16°.

The mode, mean, and median are all valid measures of central tendency for interval and ratio level data. For nominal level data, only the mode is appropriate, while for ordinal level data, both the mode and median can be used, but the mean is not recommended as it assumes equal intervals between categories.

The correct statement regarding the use of the mode, mean, and median for different levels of measurement is:

The mode can be used for nominal and ordinal levels of measurement, the median is used for ordinal, interval, and ratio levels, while the mean is used for interval and ratio levels of measurement.

Let's break it down:

1. Mode: applicable to nominal and ordinal levels as it represents the most frequently occurring value in the data.

2. Median: applicable to ordinal, interval, and ratio levels as it represents the middle value when data is arranged in order.

3. Mean: applicable to interval and ratio levels as it represents the average value by summing all data points and dividing by the number of data points.

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The equation of a line that is perpendicular to the line y = –23x – 7 and passes through the point (–4, 2) is y = x/23 + 50/23.

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation (formula):

y - y₁ = m(x - x₁)

Where:

Since the equation of this line is perpendicular to the line y = –23x – 7, the slope is given by;

Slope, m = -23

m₁ × m₂ = -1

-23 × m₂ = -1

m₂ = -1/-23

Slope, m₂ = 1/23

At data point (-4, 2) and a slope of 1/23, a linear equation for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y - 2 = 1/23(x - (-4))  

y - 2 = 1/23(x + 4)

y = x/23 + 4/23 + 2

y = x/23 + 50/23

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The total number of ways to choose five cards from a deck of 52 cards is (52 choose 5) = 2,598,960. Therefore, the probability of getting a full house is 3,744/2,598,960 = 0.00144.

(a) The total number of possible outcomes when tossing five coins is 2^5 = 32. The number of ways to get three heads and two tails is the number of ways to choose three heads out of five times the number of ways to choose two tails out of five, which is (5 choose 3) x (5 choose 2) = 10 x 10 = 100. Therefore, the probability of getting three heads and two tails is 100/32 = 0.3125.

(b) The probability of getting a '6' on a single roll of a die is 1/6. The probability of not getting a '6' on a single roll of a die is 5/6. The probability of getting '6 + other + 6' in three rolls of a die is (1/6) x (5/6) x (1/6) x 3 = 5/216. Therefore, the probability of getting '6 + other + 6' two times in three rolls of a die is (5/216)^2 x (211/216)^1 x (3 choose 2) = 0.0029.

(c) The probability of an individual disapproving of the president's performance is 1 - 0.46 = 0.54. The probability that all four individuals in a telephone poll disapprove of his performance is 0.54^4 = 0.054.

(d) A full house consists of three cards of one rank and two cards of another rank. The number of ways to choose the rank for the three cards is 13, and the number of ways to choose the three cards of that rank is (4 choose 3) = 4. The number of ways to choose the rank for the two cards is 12 (since one rank has already been chosen), and the number of ways to choose the two cards of that rank is (4 choose 2) = 6. Therefore, the number of ways to get a full house is 13 x 4 x 12 x 6 = 3,744. The total number of ways to choose five cards from a deck of 52 cards is (52 choose 5) = 2,598,960. Therefore, the probability of getting a full house is 3,744/2,598,960 = 0.00144.

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7. The area of the triangle is 52.2 yd².

8. The area of the triangle is 17.02 ft².

9. The area of the triangle is 9.6 mi².

10. The area of the triangle is 31.96 in².

The area of each triangle is calculated by applying the following formula as shown below;

Area = ¹/₂bh

where;

7. The area of the triangle is calculated as

A = ¹/₂ x 12 yd x 8.7 yd

A = 52.2 yd²

8. The area of the triangle is calculated as

A = ¹/₂ x 8.3 ft x 4.1 ft

A = 17.02 ft²

9. The area of the triangle is calculated as

A = ¹/₂ x 6 mi x 3.2 mi

A = 9.6 mi²

10. The area of the triangle is calculated as

A = ¹/₂ x 9.4 in x 6.8 in

A = 31.96 in²

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The shortest distance from John's Farm house to the high way is 116.6miles. This is solved using Pythagorean theorem.

When triangulated, we find three possible distances:

D - the Gas Station to the Hotel = 100miles

P -  The gas station to the farm house = 60 miles

x - shortest distance between farm ouse to the highway

In Pythagorean format:

x² = 60² + 100²

x² = 3600 +10000
x = √13600
x [tex]\approx[/tex] 116.6 Miles.

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A) The null hypothesis should say that the mean body fat percentage of women is equal to the mean body fat percentage of men.

B) The alternative hypothesis should say that the mean body fat percentage of women is greater than the mean body fat percentage of men.

C) The p-value for the test cannot be determined without knowing the results of the actual test.

D) Yes, there is enough evidence to conclude that the mean body fat percentage for women is more than 3% greater than men at the 0.05 significance level, because the difference between the means is 7.34% (22.29% - 14.95%) which is greater than 3%.

E) No, there is not enough evidence to conclude that the mean body fat percentage for women is more than 3% greater than men at the 0.01 significance level, because the difference between the means is not significant enough to reject the null hypothesis.

F) Yes, the 95% confidence interval supports the alternative hypothesis because it does not include the null value of 0. The confidence interval for the difference between the means is (1.63%, 12.05%).

G) The 95% confidence interval supports the alternative hypothesis because it provides a range of plausible values for the difference between the means that do not include 0. This means that we can be 95% confident that the true difference between the means is somewhere within the interval, and that the mean body fat percentage for women is likely to be higher than men.

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The measure of the side x is 31. 509

First, we need to know the different trigonometric identities. These identities are;

From the information given, we have that;

The opposite side = x

The adjacent side = 45

The angle, theta = 35 degrees

Using the tangent identity, we have the ratio

tan 35 = x/45

cross multiply the values, we have;

x = 45tan (35)

find the value

x = 45(0. 7002)

multiply the values

x = 31. 509

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To model the population of a city, we can use the formula:

f(x) = 1,596,000 * (1 + 0.035)^x

Where x is the number of years since 2020 and 0.035 represents the annual increase rate of 3.5%.

To model the population of a city, we need to take into account the initial population in 2020 and the annual increase rate of 3.5%. The annual increase rate of 3.5% means that the population is expected to grow by 3.5% every year from the previous year's population. To incorporate this growth rate into our model, we can use the formula for compound interest:

A = P * (1 + r)^t

Where A is the final amount, P is the initial amount, r is the annual interest rate, and t is the number of years. In our case, the final amount is the population after x years since 2020, the initial amount is the population in 2020 (1,596,000), the annual interest rate is 3.5%, and the number of years is x.

By substituting the values into the formula, we get:

f(x) = 1,596,000 * (1 + 0.035)^x

This formula can be used to calculate the expected population of the city for any year in the future. For example, if we want to know the population in 2025, we can substitute x = 5 into the formula:

f(5) = 1,596,000 * (1 + 0.035)^5

= 1,825,854

Therefore, we can expect the population of the city to be around 1,825,854 in 2025, assuming the same annual increase rate of 3.5%.

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Answer:

[tex]3(n + 5) = (n + 5)3[/tex]

So p = 5.

The term you are looking for is the proportion of the total variation in the dependent variable explained by the regression model (or independent variable), which is known as the A) coefficient of determination.

The coefficient of determination, also known as R-squared, is a statistical measure that indicates the proportion of the total variation in the dependent variable that is explained by the regression model or independent variable. It ranges from 0 to 1, with higher values indicating a better fit of the model to the data. The other terms mentioned - variable, proportion, and independent - are all related to the concept of regression analysis, which is used to identify the relationship between a dependent variable and one or more independent variables, and to quantify the extent to which changes in the independent variables affect the dependent variable.

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Answer: Where is the triangle?

Step-by-step explanation: Brainliest pls:)

The integral ∫[0,6] 1/x dx is divergent, An integral is said to be divergent if it does not have a finite value.

The given integral is:

[tex]∫[0,6] 1/x dx[/tex]

We know that the integral of 1/x is ln(x), and the antiderivative of ln(x) is xln(x) - x.

So, applying the limits of integration, we get:

[tex]∫[0,6] 1/x dx = ln(x)|[0,6] = ln(6) - ln(0)[/tex]

The natural logarithm of zero is unclear, so the indispensably isn't characterized at x = 0. In this manner, the indispensability is unique.

An integral is said to be divergent in the event that it does not have limited esteem. In other words, on the off chance that the fundamentally does not meet a genuine number, it is said to be unique.

There are a few reasons why a fundamentally may be unique. A few common reasons incorporate:

The integrand gets to be unbounded at a few points inside the limits of integration.

The integrand does not approach zero as the constraint of integration approaches boundlessness.

The limits of integration are interminable, and the integrand does not merge to a limited esteem as the limits approach interminability.

When an indispensably is disparate, it implies that the zone beneath the bend is interminable or does not exist.

This could have imperative suggestions in ranges such as material science and designing, where integrands are utilized to calculate amounts such as work, energy, and a liquid stream. 

Thus, the answer is (b) Divergent. 

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4 multiplied by 25 using the distributive property is equal to 100.

The distributive property is a fundamental property in mathematics that states that multiplying a number by a sum is the same as multiplying the number by each addend in the sum and then adding the products.

In this case, we have 4 multiplied by the sum of 20 and 5, which can be rewritten as 4 multiplied by 20 plus 4 multiplied by 5. Thus:

4 × (20+5) = 4 × 20 + 4 × 5

= 80 + 20

= 100

Therefore, 4 multiplied by 25 using the distributive property is equal to 100.

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The minimum number of dogs that have more than 27 kg is 4, and the maximum number of dogs that have more than 27 kg is 26.

We have,

To determine the minimum and maximum number of dogs that have more than 27 kg, we need to first find the cumulative frequency for the mass data.

Mass(x)     frequency   Cumulative frequency

0 ≤ x ≤10    3                 3

10 ≤ x ≤20 9                 12

20 ≤ x ≤ 30 13                25

30 ≤ x ≤ 40 4                29

Now, we can see that there are a total of 29 dogs.

To find the minimum and maximum number of dogs that have more than 27 kg, we can use the cumulative frequency table as follows:

The minimum number of dogs that have more than 27 kg is the frequency of dogs in the 30 ≤ x ≤ 40 category, which is 4.

The maximum number of dogs that have more than 27 kg is the total number of dogs minus the cumulative frequency for the 0 ≤ x ≤ 27 category, which is 3.

Now,

The maximum number of dogs that have more than 27 kg is:

29 - 3 = 26.

Thus,

The minimum number of dogs that have more than 27 kg is 4, and the maximum number of dogs that have more than 27 kg is 26.

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Answer:

3/8

Step-by-step explanatio

the person shows the answer and explanation nice!

a) The linear function giving the cost after x months is given as follows: C(x) = 88 - 8x.

b) The cost of the shoes after 8 months is given as follows: $24.

The slope-intercept representation of a linear function is given by the equation presented as follows:

y = mx + b

The coefficients of the function and their meaning are described as follows:

Each month, the balance decays by $8.00, hence the slope m is given as follows:

m = -8.

Hence:

y = -8x + b.

When x = 1, y = 80, hence the intercept b is given as follows:

80 = -8 + b

b = 88.

Hence the function is:

C(x) = 88 - 8x.

The cost after 8 months is given as follows:

C(8) = 88 - 8(8) = 88 - 64 = $24.

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