Can someone help me with this please?

Answer

a. The shape of the cross section is a rectangle.

b. To find the perimeter of the cross section, we need to determine the length of its sides.

In a cube with an edge length of 6 inches, when a plane intersects diagonally, it creates a rectangle with dimensions of the cube's diagonal and half of its edge length.

The diagonal of the cube can be found using the Pythagorean theorem:

diagonal = √(edge length^2 + edge length^2 + edge length^2) = √(6^2 + 6^2 + 6^2) = √(36 + 36 + 36) = √108 ≈ 10.39 inches

The length and width of the rectangle are half of the edge length, which is 6/2 = 3 inches.

Since the cross section is a rectangle, its perimeter is given by:

perimeter = 2 * (length + width) = 2 * (3 + 10.39) ≈ 26.78 inches

Therefore, the perimeter of the cross section, to the nearest hundredth, is approximately 26.78 inches.

c. To find the area of the cross section, we multiply the length and width of the rectangle:

area = length * width = 3 * 10.39 ≈ 31.17 square inches

Therefore, the area of the cross section, to the nearest hundredth, is approximately 31.17 square inches.

Step-by-step explanation:

There is approximately an 89.44% probability that a box of cereal is underfilled by 5 g or more.

To find the probability that a box of cereal is underfilled by 5 g or more, we need to calculate the probability of obtaining a weight measurement below 345 g.

First, we can standardize the problem by using the z-score formula:

z = (x - μ) / σ

Where:

x = the weight value we want to find the probability for (345 g in this case)

μ = the mean weight (350 g)

σ = the standard deviation (4 g)

Substituting the values into the formula:

z = (345 - 350) / 4 = -1.25

Next, we can find the probability associated with this z-score using a standard normal distribution table or a statistical calculator.

The probability of obtaining a z-score less than -1.25 is approximately 0.1056.

However, we are interested in the probability of underfilling by 5 g or more, which means we need to find the complement of this probability.

The probability of underfilling by 5 g or more is 1 - 0.1056 = 0.8944, or approximately 89.44%.

Therefore, there is approximately an 89.44% probability that a box of cereal is underfilled by 5 g or more.

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The expression for the area of the trapezoid in this problem is given as follows:

A = 27a³b² square units.

The area of a trapezoid is given by half the multiplication of the height by the sum of the bases, hence:

A = 0.5 x h x (b1 + b2).

The parameters for this problem are given as follows:

h = 3ab, b1 = 7a²b, b2 = 11a²b.

Hence the area is given as follows:

A = 0.5 x 3ab x 18a²b.

A = 27a³b² square units.

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Hello!

you just want the result then:

it's the first answer.

The equation has one real solution when n = 43/9.

To find the values of n for which the equation has one real solution, we need to analyze the discriminant of the quadratic equation. The discriminant is the expression inside the square root of the quadratic formula and determines the nature of the solutions.

In this case, the equation is:

8s = -(n-3)s^2 - 9

To analyze the discriminant, we consider the quadratic equation in the form of as^2 + bs + c = 0. Comparing it with our equation, we have a = -(n-3), b = 8, and c = -9.

The discriminant (D) can be calculated using the formula D = b^2 - 4ac. Substituting the values, we get:

D = 8^2 - 4*(-(n-3))*(-9)

D = 64 - 36(n-3)

D = 64 + 36(3 - n)

D = 64 + 108 - 36n

D = 172 - 36n

For the equation to have one real solution, the discriminant must be equal to zero, D = 0. So, we have:

172 - 36n = 0

36n = 172

n = 172/36

n = 43/9

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The leg Adjacent the angle denoted as A using the principle of trigonometry is b.

The longest leg of a right angle triangle is the hypotenus. The leg which is directly opposite any given angle is the opposite leg while the leg parallel to any given angle is the Adjacent leg.

From the triangle given, the leg parallel to AC is the adjacent leg. Which is the leg b. So, leg b is the Adjacent.

Therefore, the adjacent leg is the one denoted as b.

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The missing step a is the addition of the 4x variable from one side and the subtraction of the 6 to the other side of the equation to isolate x.

The missing steps to complete the equation when solving for x in the equation 2x - 6 = 4(x + 2) are as follows:

a. The addition of the 4x variable from one side to move the x to one side and the subtraction of the 6 to the other side of the equation so x is on one side and the other variable is on the other side of the equal sign.

The correct choice is a. This step involves distributing the 4 to both terms inside the parentheses, resulting in 2x - 6 = 4x + 8. To isolate the x variable, we need to move all the x terms to one side and the constant terms to the other side. Subtracting 4x from both sides gives -6 = 2x + 8. Finally, subtracting 8 from both sides yields -14 = 2x. Dividing both sides by 2 gives x = -7.

Choice b is incorrect because multiplying the 4x variable is not necessary or involved in this particular equation.

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An equation for the transformed logarithm shown below, that passes through points (-1, 0) and (4, -2) is f(x) = -2log₆(x + 2).

By critically observing the logarithmic graph that models the logarithm function, we can logically deduce that it was reflected across the y-axis.

In Mathematics, the general form of a logarithm function is represented by the following mathematical equation:

f(x) = -alog(x) + k

Where:

Note: The vertical asymptote is at x = -2. Therefore, the logarithm function is given by:

f(x) = -alog(x + 2) + k

Next, we would determine the values of k and a by using the points (-1, 0) and and (4, -2):

0 = -alog(-1 + 2) + k

0 = -a(0) + k

k = 0.

For the value of a, we have:

-2 = -alog(4 + 2) + 0

-2 = -alog(6)

a = 2/log(6)

In conclusion, the required logarithm function in compact form is given by:

f(x) = -alog(x + 2) + 0

f(x) = -2/log(6) × log(x + 2)

[tex]f(x)=\frac{-2log(x+2)}{log6}[/tex]

f(x) = -2log₆(x + 2)

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Answer:

quadrant IV

Step-by-step explanation:

quadrant I - (+,+)

quadrant II - (-,+)

quadrant III - (+,-)

quadrant IV - (-,-)

The quotient equation from the synthetic division table is (3x⁴ + 19x³ + 22x² - 6x + 4)/(x + 2) = 3x³ + 13x² - 4x + 2

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

The synthetic division table

The synthetic division table has already been completed,

However, we have the following labels

Divisor  |   Dividend

             |  Some numbers

              |  Quotient  Remainder

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

Divisor = x + 2

Quotient = 3x³ + 13x² - 4x + 2

DIvidend = 3x⁴ + 19x³ + 22x² - 6x + 4

Remainder = 0

So, the quotient equation is

(3x⁴ + 19x³ + 22x² - 6x + 4)/(x + 2) = 3x³ + 13x² - 4x + 2

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Answer:

about 0.52 of the field

30=30 -75=80 = 50 near 52

Step-by-step explanation:

about 0.52 of the field

about 0.64 of the field

about 0.71 of the field

about 0.87 of the field

The equations are written as follows

For Bert's Cab Company:: y = 1 + 3a

For Madeline's Cab Company: y = 3 + 2a

i. To represent the cost in dollars (y) for a cab ride of a miles for each cab driver, we can write the following system of linear equations:

For Bert's Cab Company:

y = 1 + 3a

For Madeline's Cab Company:

y = 3 + 2a

Here, 'a' represents the distance in miles.

ii. To find the distance at which the cost will be the same for both companies, we can set the two equations equal to each other and solve for 'a':

1 + 3a = 3 + 2a

a = 2

Therefore, the cost will be the same for both companies at a distance of 2 miles.

iii. To determine which cab driver's charge will be less for a ride that is 10 miles in distance, we can substitute 'a = 10' into the equations and compare the resulting costs:

For Bert's Cab Company:

y = 1 + 3(10) = 1 + 30 = 31 dollars

For Madeline's Cab Company:

y = 3 + 2(10) = 3 + 20 = 23 dollars

From the calculations, we can see that Madeline's cab company will charge less for a 10-mile ride, with a cost of $23 compared to Bert's cab company, which charges $31.

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The value of 7.682/0.072 using long division is 106 25/36

Division is a mathematical operation which involves the sharing of an amount into equal-sized groups.

By solving this, we need to make both the numerator and denominator a whole number by multiplying all by 1000

= (7.682×1000)/0.072 × 1000

= 7682/72

divide through by 2

= 3841/36

Now there is no common factor between the numerator and denominator,

We therefore find the number of 36 in 3841

= 106 remainder 25

therefore 7.682/0.072

= 106 25/36

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Answer:

Step-by-step explanation:

The absolute value function for this problem is given as follows:

y = |x - 4| - 6.

An absolute value function of vertex (h,k) is defined as follows:

y = a|x - h| + k.

The coordinates of the vertex of the function are given as follows:

(4, -6).

The slope of 1 determines the leading coefficient a as follows:

a = 1.

Hence the function is given as follows:

y = |x - 4| - 6.

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The right response is D) Because the matching sides of the triangles are not proportional, AABC and AFED are not similar.

We must compare the ratios of the respective sides of the triangles AABC and AFED in order to determine whether they are similar.

Given:

AABC: AC = 12, AB = 4, BC = 6

AFED: DF = 15, DE = 7.5, EF = 5

The respective side ratios must be the same for triangles to be considered comparable. We'll figure out the ratios for the appropriate sides as follows:

Ratio of AC to DF: AC/DF = 12/15 = 0.8

Ratio of AB to DE: AB/DE = 4/7.5 = 0.533

Ratio of BC to EF: BC/EF = 6/5 = 1.2

The triangles AABC and AFED are not comparable because the ratios of the corresponding sides are not equal.

Because the matching sides of the triangles are not proportional, the correct response is D) AABC and AFED are not similar. The ratios of the matching sides do not line up, proving that there is no similarity between the triangles.

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The number of bananas is 90.

Let's assume the number of bananas is represented by 'B', the number of lychees is represented by 'L', and the number of mangos is represented by 'M'.

From the given information, we have the following equations:

B + L = 384  (equation 1)

B + M = 258  (equation 2)

M = (4/7) * L  (equation 3)

To solve for the number of bananas, we need to eliminate the variables 'L' and 'M' from the equations. We can do this by substituting equation 3 into equation 2:

B + (4/7) * L = 258

To simplify this equation, we can multiply through by 7:

7B + 4L = 1806  (equation 4)

Now we can solve equations 1 and 4 simultaneously. We can multiply equation 1 by 4 and equation 4 by -1 to eliminate 'L':

4B + 4L = 1536  (equation 5)

-7B - 4L = -1806  (equation 6)

Adding equations 5 and 6, we get:

-3B = -270

B = 90

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Answer:

5x+7 > 17 matches with 3.

1+3x > -5 matches with 2.

2x+1 < 3 matches with 1.

5-3x > 11 matches with 4.

Step-by-step explanation:

Answer:

The nature of the image formed by a concave mirror depends on the magnification produced by the mirror.

(a) If the magnification produced by the mirror is +3, it indicates that the image formed is magnified and upright. The positive sign of the magnification indicates that the image is virtual. The size of the image will be larger than the size of the object.

(b) If the magnification produced by the mirror is -1, it indicates that the image formed is of the same size as the object but inverted. The negative sign of the magnification indicates that the image is real and formed on the opposite side of the object. The size of the image will be the same as the size of the object, but it will be inverted.

In both cases, the concave mirror is acting as a converging mirror, meaning it brings light rays together to form an image. The specific size of the image cannot be determined without additional information, such as the distance of the object from the mirror and the focal length of the mirror.

Answer: The nature of the image formed by a concave mirror can be determined based on the sign of the magnification produced.

(a) If the magnification is positive (+3), it indicates that the image is magnified and upright. In this case, the image is virtual and located on the same side as the object. The size of the image will be three times larger than the size of the object.

(b) If the magnification is negative (-1), it indicates that the image is diminished and inverted. In this case, the image is real and located on the opposite side of the object. The size of the image will be the same as the size of the object, but it will be inverted.

It's important to note that the actual size of the image cannot be determined solely based on the magnification. The magnification only gives information about the relative size of the image compared to the object. To determine the actual size, additional information, such as the size and distance of the object, is required.

11.) The missing length of the triangle = 16.8ft.

12.) Solved

13.) The missing height of the triangle would be = 6.5cm.

14.) The length of the base would be =21.4in

15.) The height of the trapezoid = 15km

16.) The length of the other side of the trapezium = 17ft

17.) The diameter of the circle = 22m.

18.) The perimeter of the square = 76ft.

To calculate the value of the missing part of the triangle, the formula that should be used is the Pythagorean formula and this is given as follows:

For 11.)

C² = a²+b²

where

c = 18.2ft

a = 7ft

b= ?

That is;

b² = 18.2²-7²

= 331.24-49

= 282.24

b =√282.24

= 16.8

For 13.)

The area of the triangle = 45.5cm²

The base = 14cm

The height = x

But the formula for area of triangle= 1/2 base×height

That is;

45.5=1/2×14×h

h = 45.5/7

= 6.5

For 14.)

To calculate the value of the base length, the area of parallelogram should be used. The formula for the area of parallelogram = base×height.

where:

area = 160.5in²

height = 7.5in

base = ?

base = 160.5/7.5

= 21.4in

For 15.)

The area of a trapezium = ½(a+b)h

where:

a = 23

b = 29

h = ?

Area = 390

That is:

390 = 1/2×(23+29)×h

h = 390/26

= 15km

For 16.)

The area of trapezium = 1/2(a+b)h

a = 12ft

b = ?

h = 4ft

area = 58ft²

58 = 1/2(12+b)×4

b = 58-34/2

= 17ft

For 17.)

The area of the circle = πr²

area = 380.13m²

π= 3.14

380.13= 3.14× r²

r² = 380.13/3.14

= 121.0605095

r. =√121.0605095

= 11m

diameter = 2r = 2×11 = 22m

For 18.)

The area of square= a²

area= 361

a= ?= side length

a= √361

= 19

perimeter = 4×19 = 76ft

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The independent variable in this data is the speed of the car. This is because the congressman is trying to determine whether or not the gas mileage improves at lower speeds.

The dependent variable is the gas mileage, because it is the variable that is being measured and that is affected by the independent variable.

The other variables in this data are the weight of the car, the type of engine, and the year of the car. However, these variables are not being changed in this experiment, so they are not considered to be independent variables.

The data shows that the gas mileage of the Toyota Camry improves as the speed of the car decreases. This supports the claim of the supporters of the bill to reduce the speed limit.

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Answer:

No

Step-by-step explanation:

To determine whether the given set of ordered pairs {(49,13),(61,36),(10,27),(76,52),(23,52)} represents a function, check if each x-value is associated with a unique y-value.

Check the x-values in the set: 49, 61, 10, 76, and 23. There are no repeated x-values.  Still need to check if each x-value has a unique corresponding y-value.

Check the y-values: 13, 36, 27, 52, and 52. There is one repeated y-value, 52, for the pairs (76, 52) and (23, 52).

Conclusion: the y-value 52 is associated with 2 different x-values, therefore the given set of ordered pairs does not represent a function.

It would take 370 days to build the wall with the given conditions.

If 60 men can build a wall in 40 days, then the total man-days required to build the wall is:

60 men x 40 days = 2400 man-days

However, 55 men quit every ten days, which means that after 10 days, there are only 60 - 55 = 5 men left to work on the wall. After 20 days, there are only 5 - 55 = -50 men left, which means that the remaining 5 men cannot work any faster than they were already working. Therefore, we can assume that the remaining 5 men complete the wall on their own.

The number of man-days required for the first 10 days is:

60 men x 10 days = 600 man-days

The number of man-days required for the second 10 days is:

5 men x 10 days = 50 man-days

The total number of man-days required for the first 20 days is:

600 man-days + 50 man-days = 650 man-days

The remaining work can be completed by the 5 men in:

2400 man-days - 650 man-days = 1750 man-days

Therefore, the total time needed to build the wall is:

20 days + 1750 man-days / 5 men = 20 + 350 days = 370 days

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120.61 ft³ is the volume of the given cylinder.

Given that the diameter of the construction pipe is 3 ft, the radius (r) would be half of the diameter, which is 1.5 ft.

The length or height (h) of the pipe is given as 17 ft.

Plugging these values into the volume formula:

Volume = 3.14159 * (1.5 )² * 17

Calculating the expression:

Volume = 3.14159 * 2.25 * 17

Volume = 120.61 ft³

Therefore, the volume of the cylindrical construction pipe is approximately 120.645 cubic feet.

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The surface area of Seung's block is approximately 3 times greater than Derek's block , option (B).

To compare the surface areas of Seung's and Derek's wooden blocks, we need to calculate the surface areas of both blocks and find the ratio between them.

Seung's block:

The surface area of a square pyramid can be calculated using the formula:

Surface Area = Base Area + (1/2) * Perimeter of Base * Slant Height

Given that the height of Seung's block is 6 cm and the base is 10 cm, we can calculate the slant height using the Pythagorean theorem:

Slant Height = sqrt((1/2 * base)^2 + height^2)

            = sqrt((1/2 * 10 cm)^2 + (6 cm)^2)

            = sqrt(25 cm^2 + 36 cm^2)

            = sqrt(61 cm^2)

            ≈ 7.81 cm

Now we can calculate the surface area of Seung's block:

Surface Area of Seung's Block = 10 cm^2 + (1/2 * 10 cm * 7.81 cm)

                            = 10 cm^2 + 39.05 cm^2

                            = 49.05 cm^2

Derek's block:

Since Derek's block has dimensions that are half of Seung's block, the base of Derek's block will be 10 cm / 2 = 5 cm, and the height will be 6 cm / 2 = 3 cm.

The surface area of Derek's block can be calculated using the same formula:

Surface Area of Derek's Block = 5 cm^2 + (1/2 * 5 cm * slant height of Derek's block)

To find the slant height of Derek's block, we can use a similar approach as before:

Slant Height of Derek's Block = sqrt((1/2 * 5 cm)^2 + (3 cm)^2)

                            = sqrt(6.25 cm^2 + 9 cm^2)

                            = sqrt(15.25 cm^2)

                            ≈ 3.90 cm

Now we can calculate the surface area of Derek's block:

Surface Area of Derek's Block = 5 cm^2 + (1/2 * 5 cm * 3.90 cm)

                            = 5 cm^2 + 9.75 cm^2

                            = 14.75 cm^2

Finally, we can find the ratio of the surface area of Seung's block to Derek's block:

Surface Area Ratio = Surface Area of Seung's Block / Surface Area of Derek's Block

                 = 49.05 cm^2 / 14.75 cm^2

                 ≈ 3.32

Rounded to the nearest whole number, the surface area of Seung's block is approximately 3 times greater than Derek's block. Therefore, the answer is option B: 3.

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Answer: To find the total distance Reena covers in 6 days of a week, we need to consider the distance between her school and house for a single round trip and then multiply it by 6.

Given that the distance between the school and Reena's house is 1 km 480 m, we can add the distance for a one-way trip to get the total round trip distance.

Total round trip distance = 1 km 480 m + 1 km 480 m = 2 km 960 m

Now, to find the distance covered by Reena in 6 days, we multiply the round trip distance by 6:

Total distance covered in 6 days = 2 km 960 m * 6

Converting the distance to meters for easier calculation:

2 km 960 m = 2960 m

Total distance covered in 6 days = 2960 m * 6

Calculating the total distance covered:

Total distance covered in 6 days = 17760 m

Therefore, Reena covers a total distance of 17,760 meters (or 17.76 kilometers) in 6 days of a week.

Using the cross product for the proff of Pythagoras theorem, the correct step is

By the cross product property, AB² =  BC multiplied by BD

The cross product property is typically used to solve equations with two values, where the product of the extremes (the outer terms) is equal to the product of the means (the inner terms).

For the similar triangles, the ratio is as follows

BD / BA = BA / BC

BA² = BD * BC

and AB = BA, hence

BA² = BD * BC

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The given equation are linear equations.

To determine whether the given system of equations is linear or nonlinear, we need to examine the power of the variables in each equation.

98317y=1010+2965x

-71389y=5692x-1001

The variable y appears to the power of 1 (no exponent).

The variable x appears to the power of 1 (no exponent).

Since both variables have a power of 1 in both equations, the system is a linear system of equations.

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The statement means that the set X/== is a partition of X, where X is a set and == is an equivalence relation on X.

Intuitively, this means that every element of X belongs to exactly one equivalence class, and the union of all equivalence classes is X.

More formally, a partition of a set X is a set of subsets of X such that:

The union of all subsets is X.

No two subsets have any elements in common.

In this case, the set X/== is a partition of X because it satisfies both of these conditions. First, the union of all equivalence classes is X because every element of X belongs to exactly one equivalence class.

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The probability that a randomly selected point within the square falls in the red shaded square is 1/16

A probability is a number that reflects the chance or likelihood that a particular event will occur. The certainty of an event to occur is 1 and it is 100% in percentage.

Probability = sample space /total outcome

sample space is the area of the red shaded square and the total outcome is the big square.

Area of red shaded square = 1 × 1 = 1unit²

area of the big square = 4 × 4 = 16 units²

Therefore the probability that a point selected falls on the red shaded square

= 1/16

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