Tell whether each of the following is a population, sample, parameter, or statistic.2) Suppose you want to know the average amount of time a student spends on homework in a week. There are toomany students so you survey only 120 of them. Of the 120 students, the average time spent on homework in a week is 6 hours

Answer:

3:7

Step-by-step explanation:

She has 3 tennis and 7 soccer

Answer:

Step-by-step explanation:

Takes 9

Answer:

C)  (-1, -4) and (4, 6)

Step-by-step explanation:

\(\textsf{Equation 1}:y=2x-2\)

\(\textsf{Equation 2}:y=x^2-x-6\)

Substitute Equation 1 into Equation 2 and solve for x:

\(\implies 2x-2=x^2-x-6\)

\(\implies x^2-3x-4=0\)

Find two numbers that multiply to -4 and sum to -3:  -4 and 1

Rewrite the middle term as the sum of these two numbers:

\(\implies x^2-4x+x-4=0\)

Factorize the first two terms and the last two terms separately:

\(\implies x(x-4)+1(x-4)=0\)

Factor out the common term \((x-4)\):

\(\implies (x+1)(x-4)=0\)

\(\implies (x+1)=0 \implies x=-1\)

\(\implies (x-4)=0 \implies x=4\)

Substitute the found values of x into Equation 1 and solve for y:

\(x=-1 \implies y=2(-1)-2=-4\)

\(x=4 \implies y=2(4)-2=6\)

Therefore, the solution to the system of equations is:

(-1, -4) and (4, 6)

Answer:

its 10 bro calm down ok chill

Answer:

10

Step-by-step explanation:u have 5 and add 5 more

The polyhedron has:

6 Faces, 8 vertices and 12 edges in total.

But

3 Faces, 7 vertices and 7 edges are visible.

The polyhedron has 6 faces, 8 vertices and 12 edges.

a polygon is a plane figure made up of line segments connected to form a closed polygonal chain. The segments of a closed polygonal chain are called its edges or sides.

A polyhedron is a three-dimensional solid with faces that are all flat

To count the number of faces in a polyhedron, count the number of flat polygonal faces.

The number of faces are 6 in number.

Counting the vertices of a polyhedron is generally a little easier than counting the edges.

The rectangular box above has four vertices on the top and four on the bottom, which gives a total of eight vertices in all.

The number of vertices are 8 in number.

The rectangular box above has four edges along the top, four along the bottom, and four in the middle, for a total of 12 edges in all.

Hence, the polyhedron has 6 faces, 8 vertices and 12 edges.

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If the price of good x increases, the demand curve for good Y to shift to the right.

Complement goods are defined as the goods that a consumer likes to consume with a given good. Example of goods like it , peanut butter and jelly.

Substitute goods are those goods that a consumer could consume instead of a given good. For example, peanut butter and almond butter. The Market Equilibrium is used to define the intersection between the demand and supply curve. In other words, the market equilibrium occurs when price and quantity are same.o

When the price of a substitute , x increases, the demand for the second good increases. That is to say, there is a positive relationship between these two variables. In other words the price of good x increased , the demand for x will increase because it is more attractive for consumers. Therefore, the demand curve of y all shifts to the right.

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We need approximately 10 deposits to reach a balance of $31,300 four years after the last deposit which is compounded semi-annually.

To solve this problem, we can use the formula for the future value of an annuity:

\(FV = P * ((1 + r)^n - 1) / r\)

Where:

FV is the future value of the annuity

P is the periodic payment or deposit amount

r is the interest rate per period

n is the number of periods

In this case, the deposit amount is $726.56, the interest rate is 6.45% compounded semi-annually, and the future value is $31,300. We need to find the number of deposits (n).

We can rearrange the formula and solve for n:

n = log((FV * r) / (P * r + FV)) / log(1 + r)

Substituting the given values:

n = log((31,300 * 0.03225) / (726.56 * 0.03225 + 31,300)) / log(1 + 0.03225)

Using a calculator or software, we find that n ≈ 9.989.

Therefore, we need approximately 10 deposits to reach a balance of $31,300 four years after the last deposit.

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The standard form of a linear equation is

Ax+By=C

Rewrite the equation.

x+2=y

Move all terms containing variables to the left side of the equation.

x−y+2 =0

Subtract 2

from both sides of the equation.

x−y=−2

As 1  cubic yard is equal to 27 cubic feet therefore To convert 1 cf to cy we need to divide 1 by 27.

Both "CF" and "CY" are volume units, although they have distinct meanings:

"CF" stands for "cubic feet," which is a volume measurement unit used to determine how much space an object or substance takes up.

"CY" is an abbreviation for "cubic yards," a volume measurement used to measure greater quantities of material such as soil, sand, gravel, or concrete.

To convert 1 CF (cubic feet) to CY (cubic yards), you must first know that:

1 cubic yard is equal to 27 cubic feet.

Therefore to convert 1 CF to CY, just divide 1 by 27:

1 CF / 27 = 0.037 CY (rounded to three decimal places)

so,  1 cubic foot is nearly equivalent to 0.037 cubic yards.

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The values of simple interests in ascending order will give the result (Case 1 < Case 3 < Case 2).

To calculate simple interest we use the formula as:

\(simple \; interest= (P*R*T)/100\)

where,

Principle is represented by 'P'

Rate is represented by 'R'

Time is represented by 'T'

Now for given problem 3 cases are given as

Using formula of simple interest,

Case:1

\(SI=(P*R*T)/100=(2000*10*3)/100\\SI=600\)

Case:2

\(SI=(P*R*T)/100=(2000*10*9)/100\\SI=1800\)

Case:3

\(SI=(P*R*T)/100=(2000*20*3)/100\\SI=1200\)

Thus, putting values of simple interests in ascending order will give the result Case 1 < Case 3 < Case 2

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Answer:

p = 0.09375

Step-by-step explanation:

simplify the fractions within the fractions first to make it easier:

\(\frac{3}{10} = 0.3\)  and \(\frac{4}{5} = 0.8\)  and \(\frac{1}{4} = 0.25\)

set up the equation then cross multiply:

\(\frac{0.3}{p} =\frac{0.8}{0.25}\)

0.3 x 0.25 = p (0.8)

0.075 = 0.8p

divide both sides by 0.8:

p = 0.09375

After answering the given query, we can state that Y = 10 does not have a constant, so it cannot be a linear equation. Cole is accurate in stating that Y = 10 is not a linear solution as a result.

In mathematics, a linear equation has become one that takes the form y=mx+b. The inclination is B, and the y-intercept is m. Since y and x are variables, the preceding clause is frequently referred by the term a "linear equation involving two variables." Bivariate linear equations are linear equations with two variables. Linear equations can be found in many places, including 2x - 3 = 0, 2y = 8, m + 1 = 0, x/2 = 3, x + y = 2, and 3x - y + z = 3. When the formula has the structure y=mx+b, where m denotes the slope and b the y-intercept, it is often referred to because of being quadratic.A mathematical equation is said to be linear if its solution has the form y=mx+b, where m stands for the slope and b for the y-intercept.

When a variable (in this instance, Y), has a highest power of 1, the equation is said to be linear. The greatest power of Y is 1, and the equation Y = 10 has no additional terms or variables, so at first glance it might seem to be a linear equation.

But a variable component must also have a coefficient in a linear equation. In other words, the formula should be Y = mX plus b, where X is a variable, m and b are constants, and Y is the dependent variable.

Y = 10 does not have a constant, so it cannot be a linear equation. Cole is accurate in stating that Y = 10 is not a linear solution as a result.

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The probability of selecting a $10 dollar bill or a $5 dollar bill would be = 13/23

Probability is defined as the expression that can be used to represent the possible outcome of an event which may likely occur or not.

The quantity of $1 bill = 10

The quantity of $5 bill = 10

The quantity of $10 bill = 3

The sum total of bills in the box = 23

The probability of choosing a 5 or 10 bills;

= 10+3/23

= 13/23

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H0: p1 ≥ p2 (Null hypothesis: Proportion of ADHD-diagnosed students in School A is equal to or greater than in School B)

Null Hypothesis: The proportion of students diagnosed with ADHD in School A is equal to or greater than the proportion of students diagnosed with ADHD in School B.

Symbolically, the null hypothesis can be stated as:

H0: p1 ≥ p2

Where:

H0: Null Hypothesis

p1: Proportion of students diagnosed with ADHD in School A

p2: Proportion of students diagnosed with ADHD in School B

In other words, the null hypothesis assumes that there is no significant difference or that School A may have an equal or higher proportion of students diagnosed with ADHD compared to School B.

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The equation of an ellipse with x-intercepts at (4, 0) and (-4, 0), y-intercepts at (0, 9) and (0, -9), and center at (0, 0) is \($\frac{x^2}{16}+\frac{y^2}{81}=1$$\).

As per the given data the ellipse with x-intercepts at (4, 0) and (-4, 0), y-intercepts at (0, 9) and (0, -9), and center at (0, 0).

If the ellipse has its x-intercepts at points (4, 0) and (-4, 0) and y-intercepts at points (0, 9) and (0, -9), then it's symmetric across the y- axis and the x-axis.

The equation of an ellipse where the major axis 2a is greater than the minor 2b.

When 2b > 2a , then the equation becomes \($\frac{(y-h)^{2} }{b^{2} } + \frac{ (x-k)^{2} }{a^{2} } =1\)

Moreover h = 0 and k = 0 because the center is on the origin, so the equation becomes:

\($\frac{x^2}{a^2}+\frac{y^2}{b^2}=1\)

Moreover,

a = 4

b = 9

The equation of the such ellipse is

\($\frac{x^2}{a^2}+\frac{y^2}{b^2}=1\)

Hence, the equation of the ellipse is

\($\frac{x^2}{4^2}+\frac{y^2}{9^2}=1\)

\($\frac{x^2}{16}+\frac{y^2}{81}=1$$\)

Therefore the equation of an ellipse is  \($\frac{x^2}{16}+\frac{y^2}{81}=1$$\).

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Find the equation of the ellipse with the following properties. The ellipse with x-intercepts at (4, 0) and (-4, 0), y-intercepts at (0, 9) and (0, -9), and center at (0, 0).

Answer:

C I believe

Step-by-step explanation:

The tables which represent y as a function of a and are one-to-one are Y = 9 and Y = 7.

A function is a mathematical concept that relates each element of a set to a single output value. The input value is the value of the independent variable, while the output value is the value of the dependent variable. A function f(x) = y can be represented in a table with two columns, one for x and one for y.Each value of x corresponds to a unique value of y in a one-to-one function, i.e. no two values of x have the same output value. It means that each element of the domain corresponds to a unique element of the range. The tables Y = 9 and Y = 7 both represent one-to-one functions because each input value of a corresponds to a unique output value of y. Therefore, the correct answer is Y = 9 and Y = 7.

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Answer:

x°=112°

y°= 68°

z°= 68°

Hope it's helpful ❤❤❤❤

THANK YOU.

Answer: Width = 4.7 meters, Length = 6.7 meters

Step-by-step explanation:

Let the width be \(w\). It follows that the length is \(w+2\).

\(w(w+2)=32\\\\w^2+ 2w-32=0\\\\w=\frac{-2 \pm \sqrt{2^2 -4(1)(-32)}}{2(1)}\\\\w \approx 4.7 \text{ } (w > 0)\\\\\implies w+2 \approx 6.7\)

Answer:

3

Step-by-step explanation:

m=y2-y1/x2-x1

-3+2/8-5

-1/3

perp. = negative reciprocal

3

Answer:

49.093

Step-by-step explanation:

Given the regression equation :

ŷ = –0.227x + 50.455

x represents the price of bobbleheads (measured in dollars)

ŷ is the predicted demand of bobbleheads (in units).

Preductwd demand ; when x = 6

ŷ = –0.227(6)+ 50.455

= 49.093

Answer:

2) 11

3) 21

4) 7

Step-by-step explanation:

2) (-6) -(-17) = 17 - 6 = 11

3) 19 - (-2) = 19 + 2 = 21

4) (-13) + 20 = 20 - 13 = 7

Answer:

Option (2)

Step-by-step explanation:

Standard form of the polynomial will be in the form of (ax⁴+ bx³+ cx²+ dx + e).

Which means exponents of each successive term will be in the reducing form and the last term will be a constant term.

Now we can rearrange the terms of the given polynomial (5x + 2x⁴ - 4) for the standard form.

(2x⁴ + 5x - 4)

Since, degree of the leading term = 4

And number of terms = 3

Given polynomial is a fourth degree trinomial.

Option (2) will be the answer.

a). The probability of counter of each color is  

(b).There are 7 red counters are in the bag.

Probability is a branch of mathematics that deals with the occurrence of a random event.

a. Probability of event to happen is calculated by using below formula,

P(E) = Number of favorable outcomes / Total Number of outcomes.

Total number of counters = n

Number of blue counters = 1

Number of red counters = n - 1

If, two counters are taken at random from the bag.

Then, Probability of the both counter are of different color is;

1/n × n-1/n- 1 = 1/n

b. Since, The probability that a counter of each color is taken is 0.125

1/n = 0.125

so, n = 8

Number of red counters = n - 1 = 8- 1 = 7        

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Answer:

18

Step-by-step explanation:

Always remember negative x negative = positive

-51-(-60)-51-(-60)

-51+60-51+60

9+9

18

I don't know what are the expressions but try yourself

Believe in yourself you can do it

Geometric series is convergent if the |r|<1 where r is the common ratio.

Let Sn=∑ni=0(−3/4)i then

Sn=(−3/4)n+1−1(−3/4)−1

Now take n→∞ then

Sn→0−1(−3/4)−1=4/7

because |−3/4|<1 and so (−3/4)n→0. Now note that your sum is

lim ∑i=1n+1(−3)i−14i=lim 14∑i=1n+1(−3)i−14i−1=1/4.lim Sn=1/7.

Geometric series: A geometric series is the result of adding together geometric sequences indefinitely. Depending on the sequence given to us, such infinite sums can either be finite or infinite. A series is considered to be convergent if the partial sums gravitate to a certain value, also known as a limit. In contrast, a divergent series is one whose partial sums do not reach a limit. Divergent series frequently reach, reach, or avoid a particular number.

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The total amount of money in the purse was approximately 23 ducats. A man finds a purse with an unknown number of ducats in it. After he spends 1/4, 1/5, and 1/6 of the amount, 9 ducats remain. To find the initial amount in the purse, let's represent it as "x".

He spent (1/4)x, (1/5)x, and (1/6)x. The sum of these fractions plus the remaining 9 ducats equals the total amount:

(1/4)x + (1/5)x + (1/6)x + 9 = x

To solve this equation, first find a common denominator for the fractions, which is 60. Rewrite the equation with the common denominator:

(15/60)x + (12/60)x + (10/60)x + 9 = x

Combine the fractions:

(37/60)x + 9 = x

Now, isolate x on one side of the equation:

9 = (23/60)x

To find x, divide both sides by (23/60):

x = 9 / (23/60)

x = 9 * (60/23)

x = 540/23

Since x represents the number of ducats, it should be a whole number. So, we round it to the nearest whole number:

x ≈ 23

Therefore, there were approximately 23 ducats in the purse initially.

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Answer:

64

Step-by-step explanation:

This is actually really easy you just have to subtract 36 from 100

Hope this helps also please mark brainliest