What is the Surface area

Answer: i think it's 942,480

Step-by-step explanation:

i just multiplied all of the numbers but i'm probably wrong srry

Answer:

7986m^2

Step-by-step explanation:

140-102=38

area of triangle:

(38*66)/2=1254m^2

area of rectangle:

66*102=6732m^2

total area:

1254+6732=7986m^2

Answer : 8$

you have 1$ left

Answer: that four of them are stupid

Step-by-step explanation:

Answer:

25% :D

Step-by-step explanation:

The graph that represents the line that is perpendicular to y = 4x - 3, is: C. Graph C.

If two lines are perpendicular to each other, then, their slopes would be negative reciprocals.

Considering the equation, y = 4x - 3, the slope is 4.

Negative reciprocal of 4 is -1/4. The slope of the line that is perpendicular to y = 4x - 3 would be -1/4.

Slope of the line in graph C = change in y / change in x = -1/4

Therefore, the graph that shows a line that is perpendicular to y = 4x - 3 is: Graph C.

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Answer: C; Two non-vertical lines are perpendicular lines when the product of their slopes is -1. So for this example, since the slope is 4, the slope for the perpendicular line would be -1/4. So the slope to a perpendicular line from a vertical line would be its negative reciprocal. Hope that helps!

Answer: The first 3 are functions. The last one is not a function

Step-by-step explanation: What you can do is the line test. If you draw a line through it, the line shouldn't touch the arrow twice. Like the last one, it touches the line twice, so it is not a function

a. The equation whose roots are 1/a and 1/b is:

x² - [(-3 + √33) + (-3 - √33)]x + [(3 + √33)(3 - √33)]/4 = 0

b.  The evaluation of 1/a + 1/b is:

4(3 - √33) + 3(3 + √33) = 24 - 4√33 + 9 + 3√33 = 33

This  is used to solve for the roots of a quadratic equation, which is an equation in the form of ax² + bx + c = 0.

A) The equation whose roots are 1/a and 1/B can be found by using the quadratic formula.

The general form of a quadratic equation is ax² + bx + c = 0, where a, b, and c are constants and a ≠ 0.

We can substitute the values of a, b, and c into the equation to get: 2x²- 3x - 6 = 0.

To solve this equation, we can use the quadratic formula, which is: x = [-b ± √(b2-4ac)]/2a.

In this equation, a = 2, b = -3, and c = -6. Therefore, the equation becomes:

x = [-(-3) ± √((-3)2-4(2)(-6))]/2(2)

x = [3 ± √(9+24)]/4

x = [3 ± √33]/4

Therefore, the roots of the equation 2x2 - 3x - 6 = 0 are:

a = (3 + √33)/4

b = (3 - √33)/4

To find the equation whose roots are 1/a and 1/b, we can first rearrange the roots to make them the subject of the equation.

The rearranged roots are:

a = 1/(3 + √33)

b = 1/(3 - √33)

We can then substitute these values into the general form of a quadratic equation, which is ax² + bx + c = 0.

In this equation, a = 1, b = -(3 + √33) + (3 - √33) and c = [(3 + √33)(3 - √33)]/4.Therefore, the equation whose roots are 1/a and 1/b is:

x² - [(-3 + √33) + (-3 - √33)]x + [(3 + √33)(3 - √33)]/4 = 0

B) To evaluate 1/a + 1/b, we can first substitute the values of a and b into the equation. The values of a and b are:

a = (3 + √33)/4

b = (3 - √33)/4

Therefore, 1/a + 1/b becomes:

1/[(3 + √33)/4] + 1/[(3 - √33)/4]

We can then simplify this equation by multiplying the numerator and denominator of the first fraction by 4, and the numerator and denominator of the second fraction by 3.

The resulting equation is:

4(3 - √33) + 3(3 + √33)

Therefore, the evaluation of 1/a + 1/b is:

4(3 - √33) + 3(3 + √33) = 24 - 4√33 + 9 + 3√33 = 33

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If Leila makes a dot plot of the heights of the girls in her class to the nearest ¹/₂ inch, the number of different heights that will include on the number line is 5.

A dot plot is a data visualization tool that consists of data points plotted as dots on a graph with an x- and y-axis.

The number of dots plotted on each number line shows the frequency of the data group.

Height    Frequency   Cumulative Frequency

56¹/₂             2                               2

57                 2                               4

57¹/₂             2                               6

58                2                               8

58¹/₂             1                               9

Thus, arranging the heights according to groups, the different heights on the number line can be classified into 5.

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Answer:

To convert euros to pounds, we have to multiply the amount in euros by the exchange rate. So, the sunglasses cost 90 * 0.875 = 78.75 pounds.

To use a suitable approximation, we can round the exchange rate to the nearest hundredth, which is 0.88. This makes the calculation easier and gives a close estimate of the actual value.

Using the rounded exchange rate, the sunglasses cost 90 * 0.88 = 79.2 pounds.

We can see that both the exact and the approximate values are greater than 70 pounds, so Elyas is wrong. The sunglasses cost more than 70 pounds

Step-by-step explanation:

An order-preserving function is one where x < y implies f(x) < f(y). An isomorphism is a one-to-one order-preserving function between two partially ordered sets, while an automorphism is an isomorphism of a set to itself.

In the given excerpt, it explains the concepts of order-preserving functions, isomorphisms, and automorphisms in the context of partially ordered sets.

Order-Preserving Function:

A function f: P -> Q, where P and Q are partially ordered sets, is said to be order-preserving if for any elements x and y in P, if x < y, then f(x) < f(y). In other words, the function preserves the order relation between elements in P when mapped to elements in Q.

Increasing Function:

If P and Q are linearly ordered sets, then an order-preserving function is also referred to as an increasing function. It means that for any elements x and y in P, if x < y, then f(x) < f(y).

Isomorphism:

A one-to-one function f: P -> Q is called an isomorphism of P and Q if it satisfies two conditions:

a. f is order-preserving: For any elements x and y in P, if x < y, then f(x) < f(y).

b. f is onto (surjective): Every element in Q has a pre-image in P.

When an isomorphism exists between (P, <) and (Q, <), it means that the two partially ordered sets have a structure that is preserved under the isomorphism. In other words, they have the same ordering relationships.

Automorphism:

An automorphism of a partially ordered set (P, <) is an isomorphism from P to itself. It means that the function f: P -> P is both order-preserving and bijective (one-to-one and onto). Essentially, an automorphism preserves the structure and order relationships within the same partially ordered set.

These concepts are fundamental in understanding the relationships and mappings between partially ordered sets, particularly in terms of preserving order, finding correspondences, and exploring the symmetry within a set.

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Answer:

∠AOC = 98°

∠BOC = 82°

∠DOE = 39°

Step-by-step explanation:

∠DOE = 180 - (43 + 98)

           = 39°

∠BOC = 180 - ∠DOB

           = 180 - 98

           = 82°

∠AOC = ∠DOB  (they are vertical angles which are equal)

Answer:

B?

Step-by-step explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

Answer:

The answer is 2x + -3y = 19

Step-by-step explanation:

no idea what the guy on top is saying

Answer:

  B = 2880

Step-by-step explanation:

You want to find B when ...

  √(0.2B) = 24

  0.2B = 576 . . . square both sides

  B = 2880 . . . . divide by 0.2

The rate of change of the Distance between the planes is zero. This means that the distance between the planes remains constant throughout their respective flights.

The rate of change of the distance between the planes, we need to determine how the distance between them changes over time.

the distance between the two planes is represented by the variable D, and time is represented by the variable t.

At noon, the southbound plane starts flying and continues for 4 hours until 4 pm. During this time, the plane covers a distance of 900 km/h * 4 hours = 3600 km due south.

Meanwhile, the eastbound plane is also traveling towards the airport. It starts from a distance of 2000 km away from the airport at 4 pm.

To find the distance between the planes at any given time, we can use the Pythagorean theorem, as the planes are moving at right angles to each other. The distance D between the planes can be calculated as:

D^2 = (2000 km)^2 + (3600 km)^2

Simplifying the equation:

D^2 = 4000000 km^2 + 12960000 km^2

D^2 = 16960000 km^2

Taking the square root of both sides:

D = sqrt(16960000) km

D = 4120 km

Now, we can find the rate of change of the distance between the planes by calculating the derivative of the distance equation with respect to time

dD/dt = 0

Since the distance between the planes is constant, the rate of change is zero.

Therefore, the rate of change of the distance between the planes is zero. This means that the distance between the planes remains constant throughout their respective flights.

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Given:

To Determine: At what rate did they build the road in a week

Solution

To determine the rate per week, we would divide the total road built in 5 weeks by the number of weeks. Therefore, the rate is

Hence, the rate is 1.25km per week

The 90% confidence interval for the population proportion of adults who believe in UFOs is (0.309, 0.339).

C. With 90% confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.

To construct a 90% confidence interval for the population proportion of adults who believe in UFOs, we can use the formula:

Confidence Interval = Sample Proportion ± Margin of Error

First, we calculate the sample proportion:

Sample Proportion \(\hat{p}\) = Number of adults who believe in UFOs / Total number of adults surveyed = 736 / 2266 ≈ 0.324

Next, we need to calculate the margin of error.

Since we are dealing with a large sample size, we can use the formula for a 90% confidence interval:

Margin of Error\(= Z \times \sqrt{(\hat{p} \times (1 - \hat{p}) / n)}\)

Here, Z represents the z-value for a 90% confidence level, which corresponds to a z-value of 1.645. n represents the sample size.

Margin of Error\(= 1.645 \times \sqrt{(0.324 \times (1 - 0.324) / 2266)}\) ≈ 0.015

Finally, we can construct the confidence interval:

Confidence Interval = 0.324 ± 0.015 = (0.309, 0.339)

Therefore, the 90% confidence interval for the population proportion of adults who believe in UFOs is (0.309, 0.339).

Now, let's interpret the results.

The correct answer is:

C. With 90% confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.

This means that we are 90% confident that the true proportion of adults who believe in UFOs falls within the range of 0.309 to 0.339.

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Answer:

m<v = m<w

Step-by-step explanation:

I do not know how to explain it. CD are parallel with those to lines. They ahve the same degree as the other two angles.

<y = <z are opposite angle.

<w + <x = 180 are suplementary angle which mean they add up to 180.

Answer:

z = 5

Step-by-step explanation:

Here, I am using the 30 60 90 right triangle rule

7+3 = 2x

z = 5

x = 5√3

The line slants downward from left to right, indicating that as x increases, y decreases.

The given linear equation is -x = 2y + 1. To represent this equation graphically, we need to rearrange it into the slope-intercept form, which is y = mx + b, where m represents the slope and b represents the y-intercept.Rearranging the given equation, we get:2y = -x - 1

Dividing both sides by 2:y = (-1/2)x - 1/2

The slope of the line is -1/2, which means that for every unit increase in x, y decreases by 1/2 unit. The y-intercept is -1/2, indicating that the line intersects the y-axis at (0, -1/2).

Based on this information, the best graph that represents the linear equation y = (-1/2)x - 1/2 is a straight line with a negative slope of -1/2, starting at the point (0, -1/2) and extending infinitely in both directions.

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The number 100 would land in column 2

Given that we have the array of numbers

The length of each row in the array is 7

Dividing 100 by 7, we have

100/7 = 14 Remainder 2

This means that

Column = 2

In (a), we have

100/7 = 14 Remainder 2

This means that

Row = 14

Here, we have

The length of each row in the array is 6

Dividing 100 by 6, we have

100/6 = 16 Remainder 3

So, the location of 100 in rows of 6 numbers is row 16 and column 3

Let the length of each row in the array be n

Dividing 100 by n, we have

100/n = q Remainder r

This means that the location of 100 in rows of n numbers is row q and column r

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Answer:

Undefined.

Step-by-step explanation:

Slope is equal to the change in y over the change is x, or rise over run.

\(m=\frac{change in y }{ change in x}\)

The change in x is equal to the difference in x-coordinates, and the chnage in y is equal to the difference in y-coordinates.

\(m=\frac{y2-y1}{x2-x1}\)

Substitute in the values of x and y into the equation to find the slope.

\(m= \frac{-2-(2)}{2-(2)}\)

Simplify it. since -2-(2) and 2-(2) = nothing, the Slope is Undefined.

Hence, the slope is Undefined.

Answer:

Undefined

Step-by-step explanation:

Hope this helps

Answer:

invalid question because there is no way multiplying 3 with a number will result to 0

Answer: All triangles have a 180 degree to them so 55+20 is 75 AND 180 degrees - 75 gives us 105 degrees. Although I know my math is correct a picture of this triangle would be helpful

Step-by-step explanation: