Can somebody help me? Thank you!

Answer:

0.81

Step-by-step explanation:

\(\frac{100-19}{100} =0.81\)

Answer:

1x + 33

33 + 1(300) = $333

The blanks are filled as below

Collinear points are those that are situated along a single straight line.

Collinear points are those that are on a line either close to or far from another point, it can be more than two points.

While coplanar points imply lying on the same plane

In the diagram,

E, F, and G are collinear points

D, B, E, F, and G are coplanar points

A, B, and C are another collinear points

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No, it is not safe to assume that the sampling distribution of the sample means is about normal given the sample size.

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Answer:

Step-by-step explanation:

Since City a is an equation, you would have to solve it for its population, which is 280000, and since City B is 1,620,000 and City C is double city B, 3,240,000/280000 would get you the population, which is:

11.57, you would round up after that, which would get you the answer:

12

Answer:6

Step-by-step explanation:

-4xy

-4(1/2)(-3)

-4(-1.5)

6

Answer:

34

Step-by-step explanation:

Because to find the diameter simply multiply the radius by 2

17 x 2 = 34

Hope this helps!

Answer:

its in the picture

Step-by-step explanation:

Graph the absolute value using the vertex and a few selected points.

x          y

−1        -4

 0       -3

 1        -2

 2       -3

 3       -4

basically, the answer is the graph that looks like this...

hope this helps ;)

If a pollster wishes to estimate the number of left-handed scientists. The sample that is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 4% is: 176.71.

Using this formula to find the sample

n =Z²π (1-π) ÷ e²

Where:

n =sample size =?

Z =  Z -score for 95% confidence level =1.960

π = Population proportion = 0.08

e = Margin of error = 0.04

Let plug in the formula

n = 1.96² × 0.08 × (1 - 0.08) ÷ 0.04²

n =  3.8416× 0.08 × 0.92 ÷ 0.0016

n = 176.71

Therefore the sample is 176.71.

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Answer:

So its A.

Step-by-step explanation:

For future ppl if they need it :)

Answer:

I think its false

Step-by-step explanation:

the car went 8 second faster

Each person eats at least one fruit. Hence 39% of people eat both orange and apple using the probability.

Probability is simply how likely something is to happen. Whenever we're unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are. The analysis of events governed by probability is called statistics. From the given data

n(O)=0.63

n(A)=0.76

n(A∪O)=1 as every person eats at least one fruit

n(A∪O)=n(A)+n(O)−n(A∩B)

1=0.63+0.76−n(A∩B)

n(A∩B)=1.39−1

n(A∩B)=0.39

A∩B=0.39×100=39

Hence 39% of people eat both orange and apple

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There are 15 green books in the bookcase.

The ratio of yellow books to green books in the sample is 7:3. This means that for every 7 yellow books, there are 3 green books.

If there are 35 yellow books in the bookcase, we can use the ratio to find the number of green books:

7 yellow books : 3 green books

35 yellow books : x green books (where x is the number of green books)

To solve for x, we can use cross-multiplication:

7 yellow books * x green books = 35 yellow books * 3 green books

7x = 105

x = 15

Therefore, there are 15 green books in the bookcase.

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Answer:

(x+2)^2 - 6

Step-by-step explanation:

Answer:   Answer is in the steps.

Step-by-step explanation:

No multiple of 7 can be a prime number because then it will   have more than two factors.7 is a prime number because it has only two factors 1 and itself.  For example, 14 is a multiple of 7 because 7 times 2 is 14. But now it  14 itself will not be a prime number because it has more than two factors which  is 1,2,7 and 14.

Answer:

yes, 7 is prime

Step-by-step explanation:

It has only2 factors: 1 and itself:)

-3.9 - 1/3(x) expression represents the algebraic phrase “negative 3.9 less than one third of a number”

The concept of algebraic expressions is the use of letters or alphabets to represent numbers without providing their precise values. We learned how to express an unknown value using letters like x, y, and z in the fundamentals of algebra. Here, we refer to these letters as variables. Variables and constants can both be used in an algebraic expression. A coefficient is any value that is added before a variable and then multiplied by it.

Given that, negative 3.9 less than one third of a number.

Let us suppose a number = x.

Representing the phrase algebraically we have:

-3.9 - 1/3(x)
Hence, -3.9 - 1/3(x) expression represents the algebraic phrase “negative 3.9 less than one third of a number”

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The value of the dependent variable is 50.

What is linear function?

A linear function is a mathematical function of the form:

f(x) = mx + b

where m is the slope of the line and b is the y-intercept, which is the point where the line intersects the y-axis. The slope represents the rate of change of the function, or how much the function changes for a unit change in the independent variable x. The y-intercept represents the value of the dependent variable when the independent variable is equal to zero. Linear functions are characterized by a straight line when graphed on a coordinate plane.

To find the equation of the linear function, we can use the slope-intercept form of a line, which is:

y = mx + b

where m is the slope and b is the y-intercept. We know that the slope is 5, and the function passes through the point (-7, 5). We can use this information to solve for the y-intercept:

5 = 5(-7) + b

b = 40

Therefore, the equation of the linear function is:

y = 5x + 40

To find the value of the dependent variable when x = 2, we can substitute x = 2 into the equation and solve for y:

y = 5(2) + 40

y = 10 + 40

y = 50

Therefore, the value of the dependent variable when the independent variable is equal to 2 is 50.

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a) The value of k is 800.

b) The PDF for Y is \(\left \{ {{\frac{2y}{25};0\leq y\leq 5} \atop {0; otherwise}} \right.\)

What is probability density function?

The probability function expressing the density of a continuous random variable lying within a certain range of values is known as the probability density function (PDF).

What is cumulative density function?

The probability function that X will have a value less than or equal to x is known as the Cumulative Distribution Function (CDF) of a real-valued random variable X, evaluated at x.

Given probability density function:

f(x)=\(\left \{ {{\frac{k}{x^{3} };x\geq 20 } \atop {0; otherwise}} \right.\)

a) By the definition of pdf we have,

\(\int\limits {f(x)\\} \, dx\)=1

\(\int\limits^{infinity}_{20} {\frac{k}{x^{3} } } \, dx\)=1

\(\frac{-1}{2} [\frac{-k}{20^{2} }]\)=1

\(\frac{k}{800}\)=1

k=800

The valid pdf is as follows:

f(x)= \(\left \{ {{\frac{800}{x^{3} };x\geq 20 } \atop {0; otherwise}} \right.\)

The cumulative distribution function of X is defined as follows:

F(x)= P(X≤x)

     =800\(\int\limits^x_0 {\frac{1}{x^{3} } } \, dx\)

     =\(\frac{800}{2}\)[\(\frac{-1}{x^{2} }\)]

   F(x) = \(\frac{-400}{x^{2} }\)

b)  Given gallons of fuel consumed

Y= h(X)= \(\frac{100}{X}\)

The cumulative distribution function of Y can be obtained as follows:

F(y)= P(Y≤y)

      = P ((\(\frac{100}{X}\)) ≤y)

      = P (X≥ (\(\frac{100}{y}\)))

      =1- P (X≤ (\(\frac{100}{y}\)))

P (X≤ (\(\frac{100}{y}\))) = F (\(\frac{100}{y}\))

                     = \(\frac{-4y^{2} }{100}\)

F(y)= 1+(\(\frac{y ^{2} }{25}\))

We can get the pdf of Y by differentiating cumulative distribution function with respect to u as follows:

f(y)= F(y) \(\frac{d}{dy}\) F(y)

     =\(\frac{d}{dy}\)(1+ (\(\frac{y^{2} }{25}\)))

f(y)= \(\frac{2y}{25}\)

Therefore, the probability density function of y is

\(f_{y}\)(y)= \(\left \{ {{\frac{2y}{25} ;0\leq y\leq 5} \atop {0; otherwise}} \right.\)

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The volume of the solid enclosed by the surface z = x^2 * y * e^y - 1 is infinite.

To find the volume of the solid enclosed by the surface given by the equation z = x^2 * y * e^y - 1, we can use a triple integral over the region of interest. Since the equation does not provide any bounds or limits, let's assume we are considering the entire space.

The volume V can be calculated as:

V = ∭E dV

where E represents the region enclosed by the surface.

We'll set up the integral in Cartesian coordinates (x, y, z). The limits of integration depend on the region of interest, but since we don't have specific bounds, we'll integrate over the entire space:

V = ∫∫∫E dV

Now, we need to express the volume element dV in terms of Cartesian coordinates. In this case, dV = dx * dy * dz.

V = ∫∫∫E dx * dy * dz

Next, we'll set up the integral limits. Since we're considering the entire space, we'll integrate from negative infinity to positive infinity for each variable:

V = ∫(-∞ to ∞) ∫(-∞ to ∞) ∫(-∞ to ∞) dx * dy * dz

Now, we can evaluate the integral:

V = ∫(-∞ to ∞) ∫(-∞ to ∞) [∫(-∞ to ∞) dx] dy * dz

Since the innermost integral with respect to x is over the entire space, it evaluates to the length of the interval, which is ∞ - (-∞) = ∞.

V = ∫(-∞ to ∞) ∫(-∞ to ∞) ∞ dy * dz

Again, since the integral with respect to y is over the entire space, it evaluates to the length of the interval, which is ∞ - (-∞) = ∞.

V = ∫(-∞ to ∞) ∞ dz

Finally, we have the integral with respect to z over the entire space, which also evaluates to the length of the interval, ∞ - (-∞) = ∞.

Therefore, the volume of the solid enclosed by the surface z = x^2 * y * e^y - 1 is infinite.

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Answer:

\(v=30\)

Sure hope this helps you

Answer:

70 miles

Step-by-step explanation:

30 (mi) +40 (mi) =70

Answer:

1. In mathematics, a variable is a symbol and placeholder for a quantity that may change, or any mathematical object. In particular, a variable may represent a number, a vector, a matrix, a function, the argument of a function, a set, or an element of a set. Eg: x, y, etc...

2. incomplete question

so the car is regularly 7300 bucks, however today is your birthday and you get it 27% off, so 100% - 27% = 73%, so 73% of the regular price, hmm how much is that?

\(\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{73\% of 7300}}{\left( \cfrac{73}{100} \right)7300}\implies 5329\)

now enter the taxman!  to that will squeeze you for 8%

\(\stackrel{\textit{8\% of 5329}}{\left( \cfrac{8}{100} \right)5329}\implies 426.32\hspace{5em}\underset{ total~cost }{\stackrel{ 5329~~ + ~~426.32 }{\text{\LARGE 5755.32}}}\)

so how much will it be for 5755.32 at 12% for 5 years simple interest?

\(~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$5755.32\\ r=rate\to 12\%\to \frac{12}{100}\dotfill &0.12\\ t=years\dotfill &5 \end{cases} \\\\\\ A = 5755.32[1+(0.12)(5)] \implies \stackrel{ \textit{final pay for the car} }{\boxed{A \approx 9208.51}}\)

In theory, this event could pay enough to cancel out Wanda's expenditures the job pay 16 trips.

Establish a variable.

Utilizing the variable, write an equation.

Make the equation work.

Let C be the total cost of each transaction.

T, the quantity of slides down the water slide,

Since the price is the same regardless of how much she rides, C = 89 for the first transaction.

For the second agreement, C = 16plus T.

Set the two costs equal to one another, then use T to determine when they are equal.

89 = 16 + T + T = 18 trips.

Given that the first contract can only have a cost of $90, the price must be $15.

90 = 15 + T + T = 16 trips.

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