Ms. Rios mowed

2

7

of her lawn. Her son mowed

1

4

of it. Who mowed most of the lawn? How much of the lawn still needs to be mowed?
(little sister needs answer)

Answer:

maybe (-3,-4)?

Step-by-step explanation:

The values of the variable that results in congruent triangles is 27

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

The congruent triangles

The sum of angles in a triangle is 180 degrees

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

4w + 14 + 22 + 36 = 180

So, we have

4w = 180 - (14 + 22 + 36)

Evaluate the sum and the difference

4w = 108

Divide by 4

w = 27

Hence, the values of the variable that results in congruent triangles is 27

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The statement "the t distribution is a family of similar probability distributions" is True.

The t-distribution is indeed a family of similar probability distributions. It is used in statistics to model the distribution of a random variable when the sample size is small and the population standard deviation is unknown. The shape of the t-distribution depends on the degrees of freedom, which is determined by the sample size. As the degrees of freedom increase, the t-distribution approaches the shape of the standard normal distribution.

The t-distribution is symmetric and bell-shaped like the normal distribution, but it has heavier tails, which means it has more probability in the tails and less in the center compared to the normal distribution. The t-distribution plays a crucial role in hypothesis testing and constructing confidence intervals when working with small samples.

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I hope this helps you

find trapezoid sides from right triangle

base is 2 unit and the height is 6 unit

let's find hypothenus(trapezoid side)=x

x^2=2^2+6^2=40

x=2 square root of 10

let's sum of the trapezoid sides

2x+2 bases

4 square root of 10+(7unit+3unit)

4 square root of 10 +10

6 people be lined up to get on the bus in 480 ways

A permutation is an act of arranging objects or numbers in order. Combinations are the way of selecting objects or numbers from a group of objects or collections, in such a way that the order of the objects does not matter.

For this, the easiest way is doing the complement. Calculate how many the 2 people are together and subtract from the total, so:

We can consider 2 people a block that will permutation, so, instead of 6 people we have 5 [a block of 2 people and 4 more):

5! = 5.4.3.2.1 = 120

The 2 people from the block will permutation as well:

2! = 2.1 = 2

Total: 5!.2! = 120.2 = 240.

For the case they are not following each other:

720 - 240 = 480

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Answer:

To determine the missing coefficient "a" in the polynomial P(x) = x^4 - 3x^3 + ax^2 - 6x + 14, we can use the SOLVE process as follows:

S: Write down the given information and identify the problem.

We are given the polynomial P(x) = x^4 - 3x^3 + ax^2 - 6x + 14, and we need to find the value of the missing coefficient "a".

O: Organize the information and decide on a plan.

To find the value of "a", we can substitute specific values for x into the polynomial and solve for a.

L: Carry out the plan.

For example, let's say we substitute x = 2 into the polynomial. We get:

P(2) = 2^4 - 32^3 + a2^2 - 6*2 + 14

= 16 - 24 + 4a - 12 + 14

= -4 + 4a + 2

= 4a - 2

We are given that P(2) = 4a - 2 = 0, so 4a = 2.

Solving for a, we get:

a = 2 / 4

= 0.5

V: Check the solution.

We can check the solution by substituting 0.5 for a in the original polynomial and verifying that it gives us the correct result for P(x) when x = 2.

P(x) = x^4 - 3x^3 + 0.5x^2 - 6x + 14

Substituting x = 2 and a = 0.5, we get:

P(2) = 2^4 - 32^3 + 0.52^2 - 6*2 + 14

= 16 - 24 + 1 - 12 + 14

= 0

Since P(2) = 0, our solution appears to be correct.

Therefore, the missing coefficient "a" in the polynomial P(x) = x^4 - 3x^3 + ax^2 - 6x + 14 is 0.5.

Let's define the random variable X to represent the result of flipping a coin, where X takes the value 1 if the outcome is heads and 0 if the outcome is tails. In this case, X follows a Bernoulli distribution.

The probability of success, denoted by p, is the probability of getting heads on a single coin flip. Similarly, the probability of failure, denoted by q, is the probability of getting tails. Since there are only two possible outcomes, p + q = 1.

In the Bernoulli distribution, the probability mass function (PMF) is given by:

P(X = x) = p^x * q^(1-x)

where x is either 0 or 1, and p^x is the probability of success raised to the power of x, and q^(1-x) is the probability of failure raised to the power of (1-x).

For our coin flip experiment, we can express the PMF as:

P(X = 1) = p (probability of heads)

P(X = 0) = q (probability of tails)

The PMF shows the probability of each possible outcome of the random variable X. In this case, it represents the probability of getting heads (1) or tails (0) on a single coin flip.

The Bernoulli distribution is commonly used to model binary outcomes, where there are only two possible results. It is often used in situations such as flipping a coin, where there is a fixed probability of success (heads) and failure (tails).

The Bernoulli distribution has several important properties. The expected value (mean) of the distribution is E(X) = p, and the variance is Var(X) = p(1 - p). The expected value represents the average outcome of the experiment, while the variance measures the spread or variability of the outcomes.

Overall, the Bernoulli distribution provides a mathematical framework for understanding the probabilities associated with binary events, such as flipping a coin and obtaining heads or tails. It allows us to calculate the likelihood of specific outcomes and analyze the statistical properties of the experiment.

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Answer:

12

Step-by-step explanation:

58 = 5x - 2....because if the two lines are parallel the corresponding angles are congruent

58 + 2 = 5x

60 = 5x

\( \frac{60}{5} = \frac{5x}{5} \)

x = 12

hope it helps

for any question comment me ❤❤

57 students most likely got heads between 45 and 60 times.

To determine the number of students who got heads between 45 and 60 times, we'll use the normal distribution properties. First, we need to calculate the z-scores for 45 and 60:

Z = (X - μ) / σ

For 45 heads:
Z1 = (45 - 50) / 5 = -1

For 60 heads:
Z2 = (60 - 50) / 5 = 2

Next, we need to find the probability that a student falls between these z-scores. We can do this by looking up the z-scores in a standard normal distribution table or using a calculator. The probabilities corresponding to these z-scores are:

P(Z1) = 0.1587
P(Z2) = 0.9772

Now, subtract P(Z1) from P(Z2) to get the probability of a student's result falling between 45 and 60 heads:

P(45 ≤ X ≤ 60) = P(Z2) - P(Z1) = 0.9772 - 0.1587 = 0.8185

Finally, multiply this probability by the total number of students (70) and round to the nearest whole number:

Number of students = 0.8185 * 70 ≈ 57

So, approximately 57 students most likely got heads between 45 and 60 times.

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if the terminal point indicated by t is in the provided quadrant, the first equation in terms of the second quadrant iv; cos(t), sin(t). \(\sin t=\sqrt{1-\frac{1}{\sec ^2 t}}\)

Trig identities come in handy when we need to express one trig function in terms of another. The most famous trig identity is derived straight from the Pythagorean Theorem:

sin² t +  cos² t = 1

For an angle t in Quadrant IV, we know sin t is positive.

From the trig identity sin² t +  cos² t = 1

we can also write as:

sin t + cos t:

Now,

sin² t + cos² t = 1

sin² t   = 1 -  cos² t

sin t = ±√( 1 -  cos² t)

As noted above,

sin t is positive for t in the Quadrant IV, and so we have

sin t = √( 1 -  cos² t)

We know that

\(\cos t=\frac{1}{\sec t}\)

So, the equation will be

\(\sin t=\sqrt{1-\frac{1}{\sec ^2 t}}\)

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Answer:

105 degrees

Step-by-step explanation: 50 + 25 = 75. a triangle must have 180 degrees to be an actual triangle, take 180-75 and you get 105 degrees.

The cost is computed by squaring the difference between the predicted and actual values, summing them up, and dividing by twice the length of the actual values.

The expression can be broken down into several components.

((self⋅x⋅dot(self.w) + self⋅b)−self⋅y): This calculates the difference between the predicted values (self⋅x⋅dot(self.w) + self⋅b) and the actual values (self⋅y).

((self⋅x⋅dot(self.w) + self⋅b)−self⋅y)∗∗2: This squares the difference obtained in step 1, element-wise.

np.sum((((self⋅x⋅dot(self.w) + self⋅b)−self⋅y)∗∗2): This calculates the sum of the squared differences.

len(self⋅y): This computes the length of the actual values.

2∗len(self⋅y): This multiplies the length of the actual values by 2.

Finally, the overall cost is obtained by dividing the sum of squared differences by twice the length of the actual values.

The cost function is commonly used in optimization algorithms, such as gradient descent, to iteratively update the model parameters (self.w and self.b) in order to minimize the cost and improve the model's performance.

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The derivative of the function y = (x^3 + 5x^2)^(-1) using the Chain Rule is dy/dx = (-3x^2 - 10x) / (x^3 + 5x^2)^2.

To find the derivative of the function y = (x^3 + 5x^2)^(-1) using the Chain Rule, we need to differentiate the outer function with respect to the inner function and then multiply it by the derivative of the inner function.

Let's denote the outer function as f(u) = u^(-1), where u = x^3 + 5x^2. The derivative of the outer function is given by df/du = -u^(-2).

Next, let's find the derivative of the inner function, du/dx. Taking the derivative of u = x^3 + 5x^2, we get du/dx = 3x^2 + 10x.

Finally, we can apply the Chain Rule to find the derivative of the composite function y = f(u(x)). According to the Chain Rule, the derivative dy/dx is given by:

dy/dx = (df/du) * (du/dx)

Substituting the values, we have:

dy/dx = (-u^(-2)) * (3x^2 + 10x)

Simplifying further, we get:

dy/dx = (-3x^2 - 10x) / (x^3 + 5x^2)^2

Therefore, the derivative of the function y = (x^3 + 5x^2)^(-1) using the Chain Rule is dy/dx = (-3x^2 - 10x) / (x^3 + 5x^2)^2.

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Answer:

No

Step-by-step explanation:

If you think about this, we can figure out that 66 is 2/3 of 99.

To find out what 2/3 of 125 is, we can divide 125 by 3.

125 ÷ 3 = 41.6666667

Now multiply that by 2:

41.6666667 × 2 =83.3333334

So, no.

This is not proportional.

The sphere has a volume of around \(221.83\) cubic inches.

All of the points on a circle are equally spaced apart from the center along a line, whereas all of the points on a sphere are equally spaced apart from the center along any of the axis. In the case of a ring, we can only calculate the area, however for a sphere, we can compute both the surface area and the volume.

The volume of a cuboid generated by stretching the dimensions of rectangles in place is equal to: Volumes = length \(*\) width \(*\) height, for instance, if the area of a rectangles is length \(*\) breadth.

\(V = (4/3)\)π\(r^{3}\)

where \(r\)  is the radius of the sphere.

In this problem, the radius of the sphere is half the diameter, which is \(11\)inches. Therefore, the radius is:

\(r = d/2 = 11/2 = 5.5\) inches

Substituting this value into the formula for the volume of a sphere, and using the approximation π \(=3\), we get:

\(V = (4/3)\)π\(r^{3}\) \(= (4/3)(3)(5.5^{3} ) = (4/3)(3)(166.375) = 221.83 in^{3}\)

Therefore, the volume of the sphere is approximately \(221.83\) cubic inches.

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Answer:

Hopefully this explains o_O, also Merry Christmas!

Step-by-step explanation:

9 x 10^2 = 9 x 100 = 900

3 x 10^-2 = 3 x 1/100 = 0.03

Ratio of 900:0.03

The first one is 30000 bigger than the second

Answer:

c

Step-by-step explanation:

When a tangent line intersects with a radius of a circle at the point of tangency, they will be perpendicular. Tangent lines that meet two different circles. Since a tangent line is perpendicular to the radius of the circle, extend the radius outside of the circle.

Answer:

It's B

Step-by-step explanation:

Answer:

115.52

Step-by-step explanation:

The formula for finding the volume of a cylinder is \(\pi r^{2} *h\)

Since this is in terms of \(\pi\), we dont need to solve for that part.

3.8 * 3.8 = 14.44, then 14.44 * 8 = 115.52

I suggest writing down that formula, It comes in handy.

Answer:

\((x+1)^2=4\)

Step-by-step explanation:

Answer:

(x+1)^2 =4

x=-1±2

Step-by-step explanation:

I got it right on khan

Answer: 8/9 is rational

.2593 irrational

square root of 7: irrational

square root of .25 is rational

square root of 14: irrational

0 is a: rational

square root of 280: irrational

square root of 35: is irrational

.2222: is rational

square root of 3r is a rational number......

Step-by-step explanation:

The numbers on the mailboxes could be considered either categorical or quantitative data. The correct Option is C: Either categorical or quantitative data.

The numbers on the mailboxes can be considered either categorical or quantitative data, depending on the context in which they are being used.

If the numbers are simply labels for the mailboxes, with no inherent numerical value or order, then they can be considered categorical data. In this case, the numbers would be treated as labels for the different categories or groups, rather than as measurements with numerical significance.

On the other hand, if the numbers are being used to represent a quantity or a position in a sequence, then they can be considered quantitative data. For example, if the numbers represent the physical location of the mailbox within a building, or the order in which mail is sorted and delivered, then they can be treated as numerical measurements.

Therefore, without further context, the numbers on the mailboxes could be considered either categorical or quantitative data.

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Answer:

23 purple marbles

115 yellow marbles

Step-by-step explanation:

Let y represent the yellow marble

Let p represent the purple marbles

So, we have the equations

y = 5p

Therefore, y + p = 138

5p + p = 138

6p = 138

p = 23 marbles

Now let's put 23 in for the p in the equation to find the number of yellow marbles

y = 5(23)

y = 115 marbles

Answer:

1= 66

2= 66

3 = 114

Step-by-step explanation:

The number of classes should be an integer and this value will typically be a fraction. The limit needs to be raised in order to take into account all observations when this calculation yields an integer.

The fixed and variable costs can be determined by solving the system of equations if the variable cost is a fixed charge per unit and the fixed costs stay the same. The high-low method can, however, produce more or less accurate findings based on the distribution of values between the highest and lowest monetary values or quantities, therefore it is important to use caution when applying it.

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The magnitude of the net electrostatic force on the 5.0−nC charge due to the other charges when the charge Q1 = 6.0 nC is at (0.30 m, 0), charge Q2 = −1.0 nC is at (0, 0.10 m), and charge Q3 = 5.0 nC is at (0, 0) is 6.21 N.

The value of the net electrostatic force on the 5.0-nC

charge due to the other charges when the charge Q1 = 6.0 nC is at (0.30 m, 0),

charge Q2 = −1.0 nC is at (0, 0.10 m), and

charge Q3 = 5.0 nC is at (0, 0) can be calculated as follows:

Given data,Charge Q1 = 6.0 nC is at (0.30 m, 0),

Charge Q2 = -1.0 nC is at (0, 0.10 m),

Charge Q3 = 5.0 nC is at (0, 0)

The formula to find out the force on the third charge Q3 is:

                      F = k * |Q1 * Q3| / r1^2 + k * |Q2 * Q3| / r2^2

Here, k = 8.99 × 10^9 N·m^2/C^2, Q1 = 6.0 nC, Q2 = -1.0 nC, Q3 = 5.0 nC

For the third charge Q3, the distance from Q1 is:

                                r1 = √(0.3^2 + 0^2) = 0.3 m

And the distance from Q2 is: r2 = √(0^2 + 0.1^2) = 0.1 m

Substituting all the given values in the formula:

                               F = 8.99 × 10^9 * [ (6.0 × 10^-9 * 5.0 × 10^-9) / 0.3^2 ] + 8.99 × 10^9 * [ (-1.0 × 10^-9 * 5.0 × 10^-9) / 0.1^2 ]F = 6.21 N

Therefore, the magnitude of the net electrostatic force on the 5.0−nC charge due to the other charges when the charge Q1 = 6.0 nC is at (0.30 m, 0), charge Q2 = −1.0 nC is at (0, 0.10 m), and charge Q3 = 5.0 nC is at (0, 0) is 6.21 N.

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According to Weber's law, two items must differ in weight by "5 percent"of weight in order to detect a difference.

We are given that Weber's law

For weight discrimination, Weber’s law states that the JND is proportional to the weight of the stimulus.

The JND is defined as the smallest difference between two weights that can be detected by an observer.

The proportionality constant is known as Weber’s fraction and varies depending on the type of stimulus and the sensory modality involved.

For weight discrimination, Weber’s fraction is typically around 2-3%.

This means that two items must differ in weight by approximately 2-3% of their weight in order to detect a difference.

The difference of weight in percent is 5%, the correct option is A.

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