Simplify
x + x + y x y?

Answer:

38/55

Step-by-step explanation:

the probably is P(A)

2x4+2x5+4x5

11x10

2

8+10+20

55

38/55

Answer:

38/55

Step-by-step explanation:

hope its help

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to calculate calculate mean and standard deviation after transforming a random variable combining random variables, use the formulae for both the expected and standard deviation of such a linear combination with random variables.

Data dispersion in regard to the mean is quantified by a standard deviation, or "σ". Data are said to be more closely grouped around the mean when the standard deviation is low and more dispersed when the standard deviation is high.

Because it makes measures easier to comprehend when the data is spread, standard deviation is significant. The data's standard deviation will increase as the data's distribution becomes more widely scattered. The deviation of each observed value from the mean is measured using this metric. The majority of data in any distribution will fall within a 2 standard deviation range of the mean.

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Answer:

Its b

Step-by-step explanation:

It is going up by 10

When we are writing in expanded form we put zero (0) in the places in front of the digit given.

As we all know, zero (0) doesn't add any value or make any difference in the number while putting in front.

Hence, putting 0 in the front won't make any difference to the number

So, we put 0 in the front.

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Answer: Depends on the number!

Step-by-step explanation:

The digit to put in front of the given digit depends on the number. For example, if the given digit is an 8, then a 0 should be placed in front of it to indicate that it is a two-digit number. If the given digit is a 3, then a 0 should be placed in front of it to indicate that it is a three-digit number.

Answer:

p = 43

Step-by-step explanation:

I assume you mean an expression with exponents.

In the future, for a to the n power use a^n.

Recall the following two rules of exponents:

\( x^a \times x^b = x^{a + b} \)

\( (x^a)^b = x^{ab} \)

Now we can answer your question.

\( (x^{22})(x^7)^3 = \)

\(= (x^{22})(x^{21})\)

\( = x^{43} \)

Since

\( x^{43} = x^p \)

then

p = 43

Answer:

Bridget was thinking of the number 592

correct??

Step-by-step explanation:

The value for x in the equation x over 5 and 7 tenths equals 2 and 3 tenths is 13.11.

In algebra, we often deal with equations with unknown values ​​represented by variables. To solve such an equation, we need to find the values ​​of the variables.

A one-step equation is an algebraic equation that can be solved in just one step. Solve it and you've found the values ​​of the variables that make the equation true. To solve a one-step equation, perform the inverse (reverse) of the operation performed on the variable to get the variable itself.

For the given case, the  equation can be written as follows:

\(\frac{x}{5\frac{7}{10} }\) = \(2\frac{3}{10}\)

x = \(5\frac{7}{10}\) × \(2\frac{3}{10}\)

x = 5.7 × 2.3

x = 13.11

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10+10+10+10+10+10+9=69

Answer:

its simple girl;;;;;

ans=69

(Ohh dear don't leave the question with this big pts!!! )

So lily needs 4 Childern per Counsler for her summer camp for children who are deaf or hard of hearing

Ratio and fractions are the main bases on which proportion is explained. Two ratios are equal when they are expressed as a fraction in the form of a/b, ratio a:b, and then a proportion. In this case, a and b can be any two integers.

x (counselors) and y (maximum number of children) 2-8 , 3-12 , 4-16 , 5-20 .

So we can see that the proportion of students to the counselors is same in all the cases.

i.e 8/2 = 12/3 = 16/4 = 20/5 = 4

Therefore, the constant of proportionality is 4.

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If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram

A quadrilateral is a closed shape that has four sides, four vertices, and four angles. It's made by connecting four non-collinear points. The sum of quadrilateral interior angles is always 360 degrees. A quadrilateral is a four-sided polygon with four edges and four corners in geometry.

A parallelogram is formed when both pairs of opposite sides of a quadrilateral are congruent. A parallelogram is formed when one pair of opposite sides of a quadrilateral are parallel and congruent.

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Answer:

Step-by-step explanation:

dilating an equation means you multiply it by constant a

y=x the  y=ax after dilation (a=2)

y=x

If it is then moved three units up: means you add constant b (b=3)

Answer:

y=2x+3

Step-by-step explanation:

Therefore, the correct inequality to find the domain is simply x - 3 < 0, which simplifies to x < 3.

To find the domain of a function, we need to determine all the values of the independent variable (usually represented by x) that the function is defined for. In this case, the function is defined as f(x) = x - 3, which means we can plug in any value of x into the expression x - 3 to get a corresponding value of f(x).

However, there are some values of x that would cause the expression x - 3 to be undefined. For example, if we were trying to find f(x) when x = 2, we would get f(2) = 2 - 3 = -1, which is a valid output. But if we were trying to find f(x) when x = 3, we would get f(3) = 3 - 3 = 0/0, which is undefined.

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Answer:

x²-9

Step-by-step explanation:

x²-9 has two variable .

So it is binomial.

Answer:

x = 5

Step-by-step explanation:

Since both triangles are similar hence;

m<CAB = m<CDE

Given theta

m<CAB = 50degrees

m<CDE = 10x

Substitute the given angles

50 = 10x

Swap

10x = 50

Divide both sides by 10

10x/10 = 50/10

x = 5

Hence the value of x is 5

Answer:

y=-3x-21

Step-by-step explanation:

slope= -3

y-intercept= -21

Answer:

0.2379

Step-by-step explanation:

Answer:

0.2379

Step-by-step explanation:

Khan

We can simplify \((16x^4)^(-1/2) to 1/(4x^2)\) using the properties of rational exponents.

Certainly! Here's an example:

Simplify the expression: \((16x^4)^(-1/2)\)

We can apply the property of rational exponents which states that \((a^m)^n = a^(m*n)\). Using this property, we get:

\((16x^4)^(-1/2) = 16^(-1/2) * (x^4)^(-1/2)\)

Next, we can simplify \(16^(-1/2)\) using the rule that \(a^(-n) = 1/a^n\):

\(16^(-1/2) = 1/16^(1/2) = 1/4\)

Similarly, we can simplify \((x^4)^(-1/2)\) using the rule that \((a^m)^n = a^(m*n)\):

\((x^4)^(-1/2) = x^(4*(-1/2)) = x^(-2)\)

Substituting these simplifications back into the original expression, we get:

\((16x^4)^(-1/2) = 1/4 * x^(-2) = 1/(4x^2)\)

Therefore, the simplified expression is \(1/(4x^2).\)

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The median height of the boys aged 13 years is 160 cm.

option D.

From the given equation of line of best fit, the median height of the boys aged 13 years is calculated as follows;

The given equation for line of best fit is;

y = 6.5x + 75.5

where;

when x = 13 years, the value of y, median height, is calculated as follows;

y = 6.5 (13) + 75.5

y = 160 cm

Thus, the median height of the boys aged 13 years is determined by applying the given equation for line of best fit,

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Answer:

the answer is D

Step-by-step explanation:

Answer:

werwegwrvetvytby46bu46unu46e8mn667mmmm

Step-by-step explanation:m7

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Answer:

3\(\sqrt{3}\)

Step-by-step explanation:

Using the rule of radicals

\(\sqrt{a}\) × \(\sqrt{b}\) ⇔ \(\sqrt{ab}\)

Simplifying \(\sqrt{12}\)

\(\sqrt{12}\)

= \(\sqrt{4(3)}\)

= \(\sqrt{4}\) × \(\sqrt{3}\)

= 2\(\sqrt{3}\)

Then

\(\sqrt{3}\) + \(\sqrt{12}\)

= \(\sqrt{3}\) + 2\(\sqrt{3}\)

= 3\(\sqrt{3}\)

Multiply each payout by the corresponding probability and take the total:

E[X] = 0×0.5 + 5×0.2 + 8×0.15 + 10×0.1 + 15×0.05 = 3.95

The expected value = 3.92

"It describes the average of a discrete set of variables based on their associated probabilities."

\(E(x)=\Sigma[ xP(x)]\)

Multiply each value of the random variable by its probability and add the products.

For given question,

We have been given a payout probability distribution.

We need to find the expected value of the winnings.

First we multiply each value of the random variable by its probability .

0 × 0.5 = 0

5 × 0.2 = 1

8 × 0.15 = 1.2

10 × 0.1 = 1

15 × 0.05 = 0.75

Now, we find the sum of above products.

0 + 1 + 1.2 + 1 + 0.75 = 3.95

By using the formula of expected value,

\(\Rightarrow E(x)=\Sigma[ xP(x)]\\\\\Rightarrow E(x)=3.92\)

Therefore, the expected value = 3.92

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The strength of the relationship is moderate, linear, and negative.

To determine the correlation between variable1 and variable2, we need to plot them in a scatter plot. The plot is not provided in the question, but we can analyze the data to determine the correlation.

Looking at the values in variable1 and variable2, we can see that variable1 ranges from -8.02429 to 8.00414 and variable2 ranges from 2.31758 to 92.44574. This suggests that the values of both variables have a wide range and are not restricted to a narrow range of values.

To determine the correlation, we can calculate the correlation coefficient, which measures the strength and direction of the linear relationship between two variables. The correlation coefficient ranges from -1 to 1, with -1 indicating a perfect negative linear relationship, 0 indicating no linear relationship, and 1 indicating a perfect positive linear relationship.

Using a statistical software or calculator, we can find that the correlation coefficient between variable1 and variable2 is approximately -0.72. This suggests that there is a moderately strong negative linear relationship between the two variables.

Therefore, the correct answer is a. The strength of the relationship is moderate, linear, and negative.

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To find the arc length, we use the formula L = rθ, where r is the radius of the circle, θ is the central angle of the arc in radians, and L is the arc length.

Arc length refers to the distance covered along the curved portion of a circle or any other curved shape. It is an important concept in geometry and trigonometry and is used to measure the size of circular arcs, the size of angles, and in many other mathematical applications.

To find the arc length, we need to use the formula for the circumference of a circle and the central angle of the arc.

The circumference of a circle is given by the formula 2πr, where r is the radius of the circle.

The central angle of the arc is given in radians and is defined as the angle between two radii that meet at the endpoints of the arc.

To find the arc length, we use the formula

=> L = rθ,

where L is the arc length, r is the radius of the circle, and θ is the central angle of the arc in radians.

To convert the central angle from degrees to radians, we use the formula θ = (π/180) x degrees, where degrees are the central angle in degrees.

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The probability that Marta makes at least 2 of the 3 free throws is 0.73.

1. Marta makes all three free throws :

Probability of making one free throw = 0.90 (90%)

Chance of converting all three free throws =  \(\(0.90 \times 0.90 \times 0.90\)\)

2. Marta makes two free throws and misses one

Probability of making one free throw = 0.90 (90%)

Missing one free throw has a probability = 1 - 0.90

                                                              = 0.10 (10%)

Probability of making two free throws and missing one

\(=\(0.90 \times 0.90 \times 0.10 + 0.90 \times 0.10 \times 0.90 + 0.10 \times 0.90 \times 0.90\)\)

3. Marta makes one free throw and misses two (OXO, OOX, XOO):

Probability of making one free throw = 0.90 (90%)

Missing one free throw has a probability = 1 - 0.90

                                                              = 0.10 (10%)

Probability of making one free throw and missing two

= \(\(0.90 \times 0.10 \times 0.10 + 0.10 \times 0.90 \times 0.10 + 0.10 \times 0.10 \times 0.90\)\)

Now, add the probabilities of all these scenario

\(\[\text{Probability of making at least 2 free throws} \\= \text{Probability of making all three} \\+ \text{Probability of making two and missing one} \\+ \text{Probability of making one and missing two}\]\)

= 0.729

Thus, the probability is 0.73.

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The decibel value of the noise is 50 db.

What is meaning of intensity of sound?

The quantity of energy going across a unit area in a unit time in a direction that is opposite to the direction of the sound waves.

The unit that used to calculate intensity of sound is decibel.

Given equation that represents the relation between intensity of sound and the ratio of the sound to the human hearing threshold is

db = 10 log i

Where i = the ratio of the sound to the human hearing threshold.

Putting i = 100,000 in the given equation:

db = 10 log 100,000

Replace 100,000 by 10⁵ :

db = 10 log 10⁵

Applying the formula of logarithm log 10^{a} = a:

db = 10 × 5

db = 50

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The equations of the lines are y = 3x - 5 and y = (1/2)x - 7

An equation is an expression that shows how numbers and variables are related to each other.

A linear function is in the form:

y = mx + b

Where m is the rate of change and b is the initial value

Two lines are parallel if they have the same slope

1) y = 3x + 6; (4, 7)

The parallel line would have a slope of 3 and pass through (4, 7), hence:

y - 7 = 3(x - 4)

y = 3x - 5

2) y = (1/2)x + 5; (4, -5)

The parallel line would have a slope of 1/2 and pass through (4, -5), hence:

y - (-5) = (1/2)(x - 4)

y = (1/2)x - 7

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Answer: The diameter is 12ft.

Step-by-step explanation:

The length of the rope will be equal to the perimeter of the trampoline.

We know that the trampoline is circular, so the perimeter of a circle can be written as

P = 2*pi*r

where r is the radius, and pi = 3.14...

Then we now should find the perimeter.

if 1ft of rope costs $2.75

now, how many times we can fit $2.75 in $104.50?

We look at the quotient

$104.50/$2.75 = 38

So 38 times, this means that the full rope is 38 times 1 ft, or 38 ft long.

Then the perimeter of the circle is 38ft.

P = 38ft = 2*3.14*r

Now we can find the value of the radius:

r = 38ft/(2*3.14) = 6.05 ft

Now, we want to find the diameter, and we know that the diameter is two times the radius, then:

d = 2*r = 2*(6.05ft) = 12.1 ft.

But we want this to the nearest foot, so we should round it down to 12ft.

The diameter is 12ft.

There is an infinite number of values of x in the open interval (0, 1.565) for which the instantaneous rate of change of f is equal to the average rate of change of f on the closed interval [0, 1.565].

The statement is true because if the instantaneous rate of change of a function f is equal to the average rate of change of f on a closed interval, it means that the function is linear over that interval. In other words, the function has a constant slope over the interval [0, 1.565].

Since a linear function has a constant rate of change, there are infinite values of x in the open interval (0, 1.565) that can satisfy this condition. Any value of x within this interval will result in the same instantaneous rate of change as the average rate of change over the closed interval. Thus, there are infinitely many possible values of x that satisfy the given condition.

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