hElP plS anD tY :}

I will give brainliest if I can (only to the first person who answers)

Is the relation a function:

To determine if the relation is a function, we need to check if there is exactly one output for each input.

Looking at the given set of points, we see that there are two points with an x-coordinate of -1: (-1, 3) and (-1, -2).

This means that there are two outputs for the same input, so the relation is not a function.

Therefore, the correct answer is: "No, because for each input there is not exactly one output."

Learn more about graphs at

https://brainly.com/question/19040584

#SPJ1

Answer:

b

Step-by-step explanation:

The value of P(Greater than 2) is 0.75

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

Spinner = 6 5 7 2

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

Greater than 2 = 3

Total = 4

The probability is

P = Greater than 2/Total

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

P(Greater than 2) = 3/4

Evaluate

P(Greater than 2) = 0.75

Hence, the solution is 0.75

Read more about probability at

brainly.com/question/251701

#SPJ1

Answer:

yes

Step-by-step explanation:

it has a slope

Approximately 5.48% of the trees have a circumference smaller than 22 inches given that the mean is 30 inches.

To find the percentage of trees with a circumference smaller than 22 inches, we can use the concept of z-scores.

A z-score measures how many standard deviations a value is from the mean.

First, we calculate the z-score for the 22-inch circumference sapling using the formula:

z = (x - mean) / SD.

In this case, the mean is 30 inches and the standard deviation (SD) is 5 inches.

Plugging in the values, we get z = (22 - 30) / 5

= -1.6.

Next, we find the area under the normal curve to the left of the z-score using a z-table or a calculator.

A z-score of -1.6 corresponds to an area of approximately 0.0548.

To convert this to a percentage, we multiply by 100:

0.0548 * 100 = 5.48%.

Therefore, approximately 5.48% of the trees have a circumference smaller than 22 inches.

To know more about circumference visit:

https://brainly.com/question/28757341

#SPJ11

Answer:

2.22222222

Step-by-step explanation:

Answer:

The answer is A

Step-by-step explanation:

The experimental probability of rolling a 1 or a 2 is 0.2.

Hence, Option A is correct.

We know that,

The experimental probability of an event is defined as the number of times the event occurred divided by the total number of trials.

In this case,

The event is rolling a 1 or a 3,

Which occurred ⇒  3 + 1

                           = 4 times.

Given that there are total number of trials = 20.

Therefore,

The experimental probability of rolling a 1 or a 3 = 4/20,

                                                                                = 1/5

                                                                                 = 0.2

Hence, the required probability is 0.2.

Learn more about the probability visit:

https://brainly.com/question/13604758

#SPJ1

The complete question is:

Sarah is playing a game in which she rolls a number cube 20 times. The results are recorded in the chart below. What is the experimental probability of rolling a 1 or a 3?

Number on cube:1,2,3,4,5,6

Number of times event occurs:3,6,1,5,3,2

A.0.2

B.0.3

C.0.6

D.0.83

After  solving the equation 5(X - C)  = D , for the given matrices , we get , the unknown matrix X is = \(\left[\begin{array}{ccc}5&9\\10&6\\6&8\end{array}\right]\) .

In the question ,

it is given that , the matrices are

A = \(\left[\begin{array}{ccc}7&3\\4&3\end{array}\right]\)   B = \(\left[\begin{array}{ccc}7&2\\7&2\end{array}\right]\)   C = \(\left[\begin{array}{ccc}3&3\\4&0\\0&8\end{array}\right]\)   and D = \(\left[\begin{array}{ccc}10&30\\30&30\\30&0\end{array}\right]\) .

and the equation is given as 5(X - C)  = D ,

and we have to find the value of unknown matrix X .

let the matrix X be = \(\left[\begin{array}{ccc}a&b\\c&d\\e&f\end{array}\right]\)

Substituting , the given matrices A , B , C and D in the equation 5(X - C)  = D ,

we get ,

5(X - C)  = D ,

5X - 5C = D ,

5\(\left[\begin{array}{ccc}a&b\\c&d\\e&f\end{array}\right]\) - 5\(\left[\begin{array}{ccc}3&3\\4&0\\0&8\end{array}\right]\) = \(\left[\begin{array}{ccc}10&30\\30&30\\30&0\end{array}\right]\)

5\(\left[\begin{array}{ccc}a&b\\c&d\\e&f\end{array}\right]\) = \(\left[\begin{array}{ccc}10&30\\30&30\\30&0\end{array}\right]\) - \(\left[\begin{array}{ccc}15&15\\20&0\\0&40\end{array}\right]\)

Simplifying further ,

we get ,

5\(\left[\begin{array}{ccc}a&b\\c&d\\e&f\end{array}\right]\) = \(\left[\begin{array}{ccc}25&45\\50&30\\30&40\end{array}\right]\)

Dividing both sides by 5 ,

we get ,

X = \(\left[\begin{array}{ccc}a&b\\c&d\\e&f\end{array}\right]\) = \(\left[\begin{array}{ccc}5&9\\10&6\\6&8\end{array}\right]\)

Therefore , the matrix X is = \(\left[\begin{array}{ccc}5&9\\10&6\\6&8\end{array}\right]\) .

The given question is incomplete , the complete question is

Solve the matrix equation for the unknown matrix X.

A = \(\left[\begin{array}{ccc}7&3\\4&3\end{array}\right]\)   B = \(\left[\begin{array}{ccc}7&2\\7&2\end{array}\right]\)   C = \(\left[\begin{array}{ccc}3&3\\4&0\\0&8\end{array}\right]\)   and D = \(\left[\begin{array}{ccc}10&30\\30&30\\30&0\end{array}\right]\) . the equation is

5(X - C)  = D .

Learn more about Matrix here

https://brainly.com/question/7172481

#SPJ4

Answer:

11

Step-by-step explanation:

8 + 3*(4-3) = 8 + 3*1 = 8+3 =11

Answer:

its 11

Step-by-step explanation:

Based on the sine equation above, the sine graph is shifted 2 units upward. Hence, one of the points we can find along the midline is (0, 2).

Based on the equation above too, the period is 2π. Since the horizontal distance between the maximum and minimum peak is half the period, the distance would be π.

Dividing π by 2, we get π/2. The nearest maximum peak would be located at x = π/2 whereas the nearest minimum peak would be located at x = -π/2.

Since the amplitude in the given equation is 1 then, the maximum peak is located at y = 3 whereas the minimum peak is located at y = 1.

To summarize, we have a point (0, 2) along the midline. The nearest maximum peak is at (π/2, 3). The nearest minimum peak is at (-π/2, 1).

The graph is:

answer:

yeah or the people whose questions are literally nothing but a g00gle search away it's like you do know that you're practically wasting your points right? lol

have a nice day!

may i have the brainliest pls (i'm trying to become a genius)

answer to your math question-

-3\(\sqrt[3]{7}\)

**the steps are in the picture**

The solution to the logarithmic equation \(2log12(-8x) = 6\) is \(x = -9/32\) .

What are logarithmic properties ?

Logarithmic properties are the rules that govern the behavior of logarithmic functions. These properties are important in simplifying logarithmic expressions and solving logarithmic equations. Some of the commonly used logarithmic properties include:

Product property: \(logb(xy) = logb(x) + logb(y)\)

This property allows us to simplify the logarithm of a product of two numbers into the sum of logarithms of the individual numbers.

Quotient property: \(logb(x/y) = logb(x) - logb(y)\)

This property allows us to simplify the logarithm of a quotient of two numbers into the difference of logarithms of the individual numbers.

Power property:\(logb(x^y) = ylogb(x)\)

This property allows us to simplify the logarithm of a power of a number by bringing the exponent outside of the logarithm and multiplying it with the logarithm of the base.

Change of base formula: \(logb(x) = logc(x) / logc(b)\)

This property allows us to change the base of a logarithm by dividing the logarithm of the number by the logarithm of the base in a different base.

Solving the given logarithmic equation :

The equation can be solved by using logarithmic properties and basic algebraic manipulation.

We can begin by using the property that states \(loga(b^n) = nloga(b)\) for any base a and any positive real number b. Applying this property, we can rewrite the left side of the equation as:

\(log12((-8x)^2) = log12(64x^2)\)

Next, we can use the property that states \(loga(b) = c\) is equivalent to \(a^c = b\). Applying this property, we can rewrite the equation as:

\(12^{2log12(64x^2)} = 12^6\)

Simplifying the left side, we get:

\(64x^2 = 12^6 / 12^2\)

\(64x^2 = 144\)

Dividing both sides by 64, we get:

\(x^2 = 144/64\)

\(x^2 = 9/4\)

Taking the square root of both sides, we get:

\(x=\pm 3/2\)

However, we need to check the solutions for extraneous roots since the original equation has a logarithm with a negative argument. We can see that the solution x = 3/2 is extraneous since it results in a negative argument for the logarithm. Therefore, the only valid solution is x = -9/32.

To know more about logarithmic equation visit :

brainly.com/question/30085872

#SPJ1

Answer:

1 button.

Step-by-step explanation:

Total buttons = 40

Total red buttons = 6

Total Buttons removed =25

Buttons left = 40–25 = 15

Let the red buttons left = x

1.)Then, the probability of red buttons after removing 25 buttons = x/15 outcome / Total outcome)

2.)Probability of red buttons in the bag after removing 25 buttons is 1/3 (As given in the question)

Comparing Statement 1.) & 2.) , We get

x/15 = 1/3

x = 5

So the red buttons left = 5

Total red buttons= 6

Red buttons removed = 6–5= 1

Hence, only 1 button was red in the 25 removed buttons

There is only one red button in the removed buttons if it has a chance of drawing a red button from the bag after removing 25 buttons from the bag with 14 blue, 6 red, 12 green, and 8 purple buttons is 1/3. This is obtained by equating the probability of getting red buttons from the bag after removing 25 buttons with the given probability of red buttons.

Probability is the measure of the likelihood of an event occurring.

Probability is given by the ratio of the number of favorable outcomes with respect to an event to the total number of possible outcomes.

\(p(A) = \frac{n(A)}{n(S)}\)

p(A) is the probability of event A

n(A) is the number of outcomes with respect to A

n(S) is the total number of possible outcomes

Given that a bag contains 14 blue, 6 red, 12 green, and 8 purple buttons.

So the total number of buttons in the bag = 40

It is given that 25 buttons are removed from the bag randomly

thus, the remaining buttons in the bag = 40 - 25 = 15

It is given that the probability of drawing a red button from the bag after removing 25 buttons is 1/3

So, for finding the number of red buttons in the bag after removing we can write,

n(A) = p(A) × n(S)

here, A is the event of drawing the number of red buttons and p(A) = 1/3 and  n(s) = 15 (after removing)

Thus, the number of red buttons in the bag after removing = \(\frac{1}{3}\) × 15 = 5

So, the number of red buttons left in the bag = 5

then, the red buttons removed from the bag = 6 - 5 = 1

Therefore, only 1 red button is removed from the bag.

Learn more about probability here:

https://brainly.com/question/21278788

#SPJ2

Answer:

64x

Step-by-step explanation:

Hello!

Using the exponent rule \(\frac{a^b}{a^c} = a^{b - c}\), we can simplify the fraction.

The simplified expression is 64x.

Answer:

\(\frac{6}{15}\), which simplifyes to \(\frac{2}{5}\)

Step-by-step explanation:

\(\frac{2}{3}\) - \(\frac{4}{15}\)

\(\frac{10}{15}\) - \(\frac{4}{15}\)

\(\frac{6}{15}\) = \(\frac{2}{5}\)

Answer:

x = -3 - 2i and x = -3 + 2i

Step-by-step explanation:

I was too lazy to complete the square but solved it on WolframAlpha

Answer:

x = 16

Step-by-step explanation:

(b)

Since the triangles are similar then the ratio of corresponding sides are equal, that is

\(\frac{CB}{DE}\) = \(\frac{AC}{AD}\) , substitute values

\(\frac{x}{20}\) = \(\frac{8}{10}\) ( cross- multiply )

10x = 160 ( divide both sides by 10 )

x = 16

a) The 2 x 2 table for a diagnostic test is

Condition Positive Condition Negative

Test Positive 99 4,905

Test Negative 1 9,995

b) If the prevalence of the condition is 5%, and a person tests positive on the diagnostic test, there is a 51.02% chance that they actually have the condition.

Let's start by drawing a 2x2 table for a population with 1% prevalence. In this table, we have 10,000 people who were screened, with 100 of them having the condition and 9,900 not having the condition. We also know that the sensitivity of the test is 99%, meaning that 99 of the 100 people with the condition will test positive, and the specificity is 95%, meaning that 4,905 of the 9,900 people without the condition will test positive.

Condition Positive Condition Negative

Test Positive 99 4,905

Test Negative 1 9,995

To calculate the PPV, we use the formula:

PPV = (true positives) / (true positives + false positives)

In this case, the true positives are the 99 people with the condition who tested positive, and the false positives are the 4,905 people without the condition who tested positive. Therefore,

PPV = 99 / (99 + 4,905) = 0.0196 or 1.96%

This means that if the prevalence of the condition is 1%, and a person tests positive on the diagnostic test, there is a 1.96% chance that they actually have the condition.

Now, let's draw a 2x2 table for a population with 5% prevalence. In this table, we have 10,000 people who were screened, with 500 of them having the condition and 9,500 not having the condition. We still assume the sensitivity of the test is 99% and the specificity is 95%.

Condition Positive Condition Negative

Test Positive 495 475

Test Negative 5 9,025

To calculate the PPV, we use the same formula as before:

PPV = (true positives) / (true positives + false positives)

In this case, the true positives are the 495 people with the condition who tested positive, and the false positives are the 475 people without the condition who tested positive. Therefore,

PPV = 495 / (495 + 475) = 0.5102 or 51.02%

To know more about prevalence here

https://brainly.com/question/30773297

#SPJ4

We can calculate the values of the angles given that the sum of the interior angles is equal to 180 degrees:

With the value of x, we can calculate the value of each of the angles:

As we have 2 equal angles, we can think of the triangle as having a axis of symmetry, bisecting the angle that has a unique value (mC=70 deg).

Then, as we have an axis of symmetry, two of the sides of the triangle are equal.

Then, the triangle is isosceles (Option 3).

Answer:

x = 8

Step-by-step explanation:

You can solve the problem by first adding 8 to both sides (3x = 24), Then dividing both sides by 3 (x = 8).

The example of a Type I error in this case is: "We conclude that drinking coffee after breakfast leads to greater weight loss when in fact it does not."

What is Type I error?

A Type I error, also known as a false positive, occurs in statistical hypothesis testing when the null hypothesis (H₀) is incorrectly rejected, despite it being true in reality.

In hypothesis testing, a Type I error occurs when the null hypothesis (H₀) is incorrectly rejected when it is actually true. In this scenario, the null hypothesis would state that there is no effect of drinking coffee after breakfast on weight loss.

If the researchers conclude that drinking coffee after breakfast leads to greater weight loss, but in reality, there is no effect of coffee on weight loss, it would be a Type I error. This error implies that the researchers mistakenly concluded that there is a significant effect of the independent variable (drinking coffee after breakfast) on the dependent variable (weight loss), when there is no real effect present in the population being studied.

It is important to control the risk of Type I errors by selecting an appropriate significance level (alpha) and interpreting the results cautiously.

learn more about Type I error here:

https://brainly.com/question/31310268

#SPJ4

Divide the total spent by the total feet:

$398.40 / 1000 = 0.3984 per foot.

Round the answer as needed.

The composite function (boa)(x) is equivalent to √3x-3

Given the following functions

a(x) = 3x +1

b(x) = √x - 4

To determine the composite function (boa)(x)

b(a(x) = b(3x +1)

Substitute 3x + 1 into b(x) to have:

(boa)(x)= √(3x + 1) - 4

(boa)(x) = √3x-3

Hence the composite function (boa)(x) is equivalent to √3x-3

Learn more on composite function here:  https://brainly.com/question/17256873

#SPJ1

Answer:

1) Velocity

\(v(t) = -4\cdot t^{3}+36\cdot t^{2}\)

Acceleration

\(a(t) = -12\cdot t^{2}+72\cdot t\)

2) Velocity

\(v(t) = -4\cdot t^{3}+24\cdot t^{2}\)

Acceleration

\(a(t) = -12\cdot t^{2}+48\cdot t\)

Step-by-step explanation:

From Physics we remember that velocity (\(v(t)\)) and acceleration (\(a(t)\)) are the first and second derivatives of the function position in time. That is:

1) Let \(s(t) = -t^{4}+12\cdot t^{3}\), where \(t \ge 0\). The functions velocity and aceleration are, respectively:

Velocity

\(v(t) = -4\cdot t^{3}+36\cdot t^{2}\)

Acceleration

\(a(t) = -12\cdot t^{2}+72\cdot t\)

2) Let \(s(t) = -t^{4}+8\cdot t^{3}\), where \(t\ge 0\). The functions velocity and acceleration are, respectively:

Velocity

\(v(t) = -4\cdot t^{3}+24\cdot t^{2}\)

Acceleration

\(a(t) = -12\cdot t^{2}+48\cdot t\)

The area of the surface defined by the vector function r(u,v) is obtained by integrating the magnitude of the cross product of the partial derivatives of r(u,v) with respect to u and v. The resulting integral, ∫∫8u dA, where dA is the area element in the uv-plane, will give the surface area of the region.

The surface area of the given region can be calculated using the formula for surface area of a parametric surface. The first step is to compute the partial derivatives of the vector function r(u,v) with respect to u and v. Taking the cross product of these partial derivatives will give us the magnitude of the normal vector at each point on the surface. Integrating this magnitude over the given rectangle R in the uv-plane will yield the surface area.

In this case, the vector function r(u,v) is defined as r(u,v) = 4cos(v)i + 4sin(v)j + u²k. To find the partial derivatives, we differentiate each component of r(u,v) with respect to u and v. The partial derivatives are dr/du = 2ui and dr/dv = -4sin(v)i + 4cos(v)j. Taking the cross product of these partial derivatives gives us the magnitude of the normal vector |dr/du x dr/dv| = 8u.

To calculate the surface area, we integrate this magnitude over the rectangle R in the uv-plane, which has the limits 0 ≤ u ≤ 4 and 0 ≤ v ≤ 2π. The surface area A is given by A = ∫∫|dr/du x dr/dv| dA = ∫∫8u dA, where dA is the area element in the uv-plane. Integrating 8u over the given limits of u and v will give us the final surface area of the region.

Learn more about derivatives here: https://brainly.com/question/25324584

#SPJ11

Answer

Step-by-step explanation:

Okay so add 276 two times, then divide that answer by 400.

Answer:

here ya go ! also , 0.6 = 3/5 and 1/5 = .2

Step-by-step explanation: