The table below shows the probability distribution of students in a highschool with 1500 students. What is the expected value for the ageof arandomly chosen student?Age131415161718Probability.0.010.250.300.280.150.01A. 15.28B. 15.64C. 15.34D. 15.36

Given:

There are given the equation:

Explanation:

To find the factor of the given equation, first, we need to take a common variable from the given equation:

Then,

Final answer:

Hence, the factor of the given equation is shown below:

To find f(7) substitute x by 7 in the function

The slope interference form of straight line is given by

Here is the slope of the line and c is the y-intercept

Now, from the graph, it is seen that the line passes through the points (0,4) and (3,5)

So,

So, the required equation is

ANSWER

1058 grams

EXPLANATION

Each day she eats 46 grams of protein. In 23 days of training, she will eat 23 times that amount,

Hence, in 23 days she will eat 1058 g of protein.

Area overall is 392 square metres. The two lawns' combined area is therefore 392 square metres.

A square is a quadrilateral in geometry that has four equal sides and four right angles (90-degree angles). It is a unique kind of both a rhombus and a rectangle. A square is made up of four equal-length sides, two equal-length diagonals, and right-angle diagonal cuts. A square's area and perimeter can be calculated by multiplying one of its sides by itself (squared), and one of its sides by four, respectively. Because of their symmetry and regularity, squares are frequently employed in mathematics and building.

given

By multiplying the first lawn's length by its breadth, one may determine its area: 56 square metres is the size of the first lawn, which is 8 metres by 7 metres.

The second lawn's breadth is six times that of the first lawn's, so:

The second lawn's width is equal to 6 × 7 metres, or 42 metres.

The second lawn is the same length as the first one, so:

The second lawn is 8 metres long.

The second lawn's area is calculated by multiplying its length by its width:

The second lawn is 336 square metres in size (8 metres by 42 metres).

The first and second lawns' combined areas make up the overall area of the two lawns:

Total area equals the sum of the first and second lawns.

56 square metres + 336 square metres make up the total area.

Area overall is 392 square metres. The two lawns' combined area is therefore 392 square metres.

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In this case, we'll have to carry out several steps to find the solution.

Step 01:

Data

A(t) = 800e^(-0.86t)

Step 02:

Rate of change

t1 = 0

A(t) = 800e^(-0.86t)

A(t) = 800e^(-0.86*0)

A(0) = 800

t2 = 5

A(t) = 800e^(-0.86t)

A(t) = 800e^(-0.86*5)

A (t) = 800e^(-4.3)

A(5) = 10.85

Step 03:

Answer: x=4

Step-by-step explanation:

1. 3x+5 = 8x-16+1

2. 3x+5 = 8x-15

3. 3x+20 = 8x

4. 20 = 5x

5. x = 4

Given

Wholesale price for a pair of shoes = $3.50.

Wholesale price by 60%.

Find

price of the pair of shoes in the department store

Explanation

Price in deparrtmental store is 60% more than wholesale

so ,

Final Answer

Therefore , the price of the pair of shoes in the department store is $5.60.

The most appropriate choice for square root will be[tex]\sqrt{19}[/tex] lies between 4 and 5

What is square root of a number?

A number's square root is a value that, when multiplied by itself, yields the original number. The opposite way to square a number is to find its square root. Squares and square roots are therefore related ideas. Assuming that x is the square root of y, the equation would be written as x=y or as x2 = y. The radical symbol for the number's root is "" in this instance. When multiplied by itself, the positive number represents the square of the original number. The original number is obtained by taking the square root of a square of a real integer. For instance, the square of 3 is 9, the square root of 9 is 9, and 9 squared equals 3. Finding the square root of 9 is simple because it is a perfect square.

[tex]\sqrt{p} = p^{\frac{1}{2}}[/tex]

[tex]\sqrt{19} = 4.36\\[/tex]

4.36 lies between 4 and 5

[tex]\sqrt{19}[/tex] lies between 4 and 5

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The z - score of the normal deviation will be 0.8.

What is Standard deviation?

Standard deviation is the measure of dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

Given that;

A normal distribution has the mean = 62

Standard deviation = 20

Since, The formula for the z - score will be;

z = (x - μ) / σ

Where, σ is the standard deviation and  μ is the mean of normal distribution.

Substitute all the values in above equation, we get;

z = (x - μ) / σ

z = (46 - 62) / 20

z = - 16 / 20

z = - 0.8

Therefore,

The z - score of the normal deviation will be 0.8.

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Given:

It is given that you roll a die 96 times.

Required:

We have to find the expectation of landing on 3 or 4.

Explanation:

If you roll a die then there are 6 possibilities (1-6) and the possibility of landing on 3 or 4 is 2.

Then the probability of landing on 3 or 4 is

If you roll the die 96 times then the probability of landing 3 or 4 is

Final answer:

Hence the final answer is:

You could expect it to land on 3 or 4 is

ANSWER

24901.55 miles

EXPLANATION

We have to find the circumference of the earth using the diameter given.

The formula for circumference is:

where D = diameter

Therefore, the circumference is:

To simplify the expression above, simply combine similar terms.

The similar terms in the expression above are 8c and -3c as well as 6 and -2.

Let's combine the pairs of similar terms.

So, 8c - 3c = 5c and 6 - 2 = 4. Hence, the answer is:

The answer is 5c + 4. (Option A)

Answer:

Progressive Era

Step-by-step explanation:

Given:

• Degree of polynomial = 3

• Zeros of the polynomial: 2, 3 - 2i

Let's find the polynomial.

Since the polynomail is of degree 3, it's highest exponent will be 3.

Equate the zeros to zero:

x = 2

Subtract 2 from both sides:

x - 2 = 2 - 2

x - 2 = 0

x = (3 - 2i)

Since this root is a complex conjugate, we have the other complex root: (3 + 2i)

Hence, we have:

(x - (3 - 2i)) and (x - (3 + 2i)).

Therefore, to write the function, we have:

Now, simplify the expression:

Solving further:

Combine like terms:

ANSWER:

Solution

We are given the expression

The image below shows the definition of a polynomial and some examples as well

Thus, given

Here;

Degree = 0

Leading coefficient = 3

a . Average rate of change between 2002 and 2004 can be calculated below

b. Average rate of change between 2002 and 2006 is

The given expression is

First, we multiply the equation by t

Now, we divide the equation by 1/b + 1/9

Now, we sum fractions

Then, we solve this combined fraction

Therefore, the final expression is

We know that Mary is x years old.

The age in 10 years will be x plus 10, as follows:

And the age she had two years ago was:

An example of this could be: imagine that Mary is 10 years now. In ten years, she will have:

10 + 10 = 20 years ( we add 10 to the original number). Likewise, 2 years ago, she had 10-2 = 8 years.

Therefore, the answers are two equations:

He took 3 1/4 hours to clean the bathroom and then he took 1/8 hours to clean the kitchen.

First, we can convert the mixed number 3 1/4 into a fraction:

3 1/4 = 3/1 + 1/4 = 13/4

Now, we can sum both times:

13/4 + 1/8 = ((13*8)+(4*1)) / (4*8) = (104 +4)/ 32 = 108/32 = 27/8

Finally, we need to convert the total of hours 27/8 as a mixed number:

If 27/8 = 3.375

We take the whole number and then convert the decimal remaining into a fraction:

3 - whole number

0.375* (1000/1000) = 3/8

Hence, the mixed number for the total time that Ali spent cleaning both rooms is 3 3/8

Remember that the volume of a rectangular pyramid is given by the expression:

Where:

• a ,and ,b ,are the lenght of the sides of the rcetangle (base)

• h, is the height of the pyramid

Using this, and the data given, we'll get that:

The volume of the pyramid is 665 cubic feet

When Tanvir applies the distributive property to the left-hand side of the equation, 1/3(3q+15)=101, the equation that shows the correct application is equation 4: q+5=101.

The distributive property applies basic mathematical operations, especially in equations.

This property is that when a value is multiplied or divided by a number to a set that will be added or subtracted, the result is the same, notwithstanding if the operation is done before the addition or subtraction.

1/3(3q+15) = 101

(3q/3+15/3) = 101

= q + 5 = 101

q = 96

Check of Distributive Property:

1/3(3q+15) = 101

1/3(3 x 96+15) = 101

= 1 x 96 + 5 = 101

= 96 + 5 = 101

= 101 = 101

Or: 1/3(3q+15) = 101

1/3(3 x 96+15) = 101

= 1/3(288 + 15) = 101

= 1/3(303) = 101

= 101 = 101

Thus, the equation that correctly applies the distributive property is equation 4: q+5=101.

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Answer:

Step-by-step explanation:

The domain and range of a linear function is always real numbers (T or F)

It is True. This is because of a couple of reasons.

    1.) You cannot divide by 0.

     2. A negative number cannot have its square root taken.

The range is determined by the domain in a linear function, and thus it must always consist of real numbers.

[tex]~~~~~~~~~~~~\stackrel{\textit{payments at the beginning of the period}}{\textit{Future Value of an annuity due}} \\\\ A=pmt\left[ \cfrac{\left( 1+\frac{r}{n} \right)^{nt}-1}{\frac{r}{n}} \right]\left(1+\frac{r}{n}\right)[/tex]

[tex]\qquad \begin{cases} A=\textit{accumulated amount}\dotfill&\$400000 \\ pmt=\textit{periodic payments}\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{monthly, thus twelve} \end{array}\dotfill &12\\ t=years\dotfill &25 \end{cases}[/tex]

[tex]400000=pmt\left[ \cfrac{\left( 1+\frac{0.04}{12} \right)^{12 \cdot 25}-1}{\frac{0.04}{12}} \right]\left(1+\frac{0.04}{12}\right)[/tex]

[tex]\cfrac{400000}{\left[ \frac{\left( 1+\frac{0.04}{12} \right)^{12 \cdot 25}-1}{\frac{0.04}{12}} \right]\left(1+\frac{0.04}{12}\right)}=pmt\implies \cfrac{400000}{\left[ \frac{\left( \frac{301}{300} \right)^{300}-1}{\frac{1}{300}} \right]\left(\frac{301}{300}\right)}=pmt \\\\\\ \cfrac{400000}{515.84}\approx pmt\implies {\Large \begin{array}{llll} 775.43\approx pmt \end{array}}[/tex]

how much will it be in interest alone?

well, for 25 years every month you'd have been putting down that much, so we can just subtract what you put it from the 400,000 and what's left is the interest earned

[tex]400000~~ - ~~(25)(12)(775.43) ~~ \approx ~~ \text{\LARGE 167317}[/tex]

The fabric  has a cost per yard of $6 per yard

From the question, the given parameters are:

Yards of fabric = 2 1/2 yards

Cost of the fabric = $15

The cost per yard of the fabric is then calculated as

Cost per yard = Cost of the fabric/Yards of fabric

Substitute the known values in the above equation

So, we have

Cost per yard = 15/(2 1/2)

Evaluate the quotient

So, we have

Cost per yard = 6

Hence, the cost per yard is $6 per yard

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The constant of proportionality is A. 9.

The constant of proportionality is simply used to show that the numbers given have a constant value.

From the information, the Busy Bee store bottles fresh jars of honey at a constant rate. In 2 hours, it bottles 18 jars. The constant will be:

= Number of jars / Number of hours

= 18/2

= 9

In 6 hours, it bottles 54 jars of honey. The constant will be:

= 54 / 6

= 9

Therefore, the constant is 9.

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Answer:

===========================

Use arc length formula:

Substitute the values and calculate:

The matching answer choice is C.

Let's find the vertex for the following equation:

y = x² - 2x - 3

As you can see, we found graphically that (1, -4) is the vertex for this equation.

Now, let's find the intercept form, as follows:

x-intercept:

0 = -1² -2 * - 1 - 3

0 = 1 + 2 - 3

Then, (-1, 0)

0 = 3² - 2 * 3 - 3

0 = 9 - 6 - 3

Then (3, 0)

y-intercept:

yy