write an equation to to help you find x. after you find x , use that information to find angle 1. what is angle 1? * VIEW ATTACHMENT *

Answer:

The answer is A

Step-by-step explanation:

If you divided by 150/30 = 5.

So the answer is A. y=5x;5 feet.

Answer:

(x +y)(x +y +z)

x(x +y +z) +y(x +y +z)

xx + xy  + xz + yx + yy + yz

xx +2 xy  + xz  + yy + yz

x^2 +2xy  + xz  + y^2 + yz

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

since x=3

2*3+5

you simplify 2*3 first

6+5

=11

hope this helped

giving me brainliest will make me happy

The result from part (b) is smaller than the result from part (a), indicating that having an estimate of the population proportion reduces the minimum sample size needed.

(a) To find the minimum sample size needed when no preliminary estimate is available, we can use the formula:

\(n = (z^2 * p * (1 - p)) / E^2\)

where:

z = the z-score corresponding to the confidence level (99% confidence level has a z-score of 2.576)

p = the estimated population proportion (we don't have an estimate, so we'll use 0.5 for maximum variability)

E = the maximum error of the estimate (4% = 0.04)

Plugging in the values, we get:

\(n = (2.576^2 * 0.5 * (1 - 0.5)) / 0.04^2\\n = 659.36\)

Round up to the nearest whole number, we get a minimum sample size of 660.

(b) Using previous research where 20% of the respondents claimed to eat fast food four to six times per week, we can apply the following calculation to get the minimal sample size required:

\(n = (z^2 * p * (1 - p)) / E^2\)

where:

z = the z-score corresponding to the confidence level (99% confidence level has a z-score of 2.576)

p = the estimated population proportion (we have an estimate of 0.2)

E = the maximum error of the estimate (4% = 0.04)

Plugging in the values, we get:

\(n = (2.576^2 * 0.2 * (1 - 0.2)) / 0.04^2\\n = 320.34\)

Round up to the nearest whole number, we get a minimum sample size of 32.

(c) The result from part (b) is smaller than the result from part (a), indicating that having an estimate of the population proportion reduces the minimum sample size needed.

Population proportion refers to the proportion of individuals in a given population who possess a particular characteristic of interest. It is a statistical concept used to estimate the frequency of a specific attribute or behavior in a larger population. For instance, if we want to know the proportion of people in a city who own a car, we can randomly select a sample of people from the city and determine the percentage of people in the sample who own a car. This percentage can then be used to estimate the population proportion.

Population proportion is an important concept in statistical inference, where researchers use a sample to make inferences about the entire population. To ensure accurate estimation, the sample must be representative of the population being studied. Moreover, statistical techniques such as confidence intervals and hypothesis testing can be used to determine the degree of confidence in the estimated population proportion.

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Complete Question:-

A researcher wishes to estimate, with 99% confidence, the population proportion of adults who eat fast food four to six times per week. Her estimate must be accurate within 4% of the population proportion

(a) No preliminary estimate is available. Find the minimum sample size needed.

(b) Find the minimum sample size needed, using a prior study that found that 20% of the respondents said they eat fast food four to six times per week.

(c) Compare the results from parts (a) and (b)

Answer:

3x -4y-6

Step-by-step explanation:

1/3( 9x -12y-18)

Distribute the 1/3 to each term in the parentheses

1/3 * 9x  -1/3*12y  -1/3*18

3x -4y-6

Answer:

\(\displaystyle m\angle RTU=73^\circ\)

Step-by-step explanation:

Interior Angle of a Circle

An interior angle of a circle is formed at the intersection of two lines that intersect inside a circle.

Lines AC and BD of the figure attached below intersect forming arcs p and q. The measure of the interior angle x  is:

\(\displaystyle x=\frac{p+q}{2}\)

The question includes the drawing of a circle with lines US and RV intersecting at point T. The measure of the interior angle RTU is:

\(\displaystyle m\angle RTU=\frac{68^\circ+78^\circ}{2}\)

\(\displaystyle m\angle RTU=\frac{146^\circ}{2}\)

\(\boxed{\displaystyle m\angle RTU=73^\circ}\)

Answer:

the scale factor used to create the image is 3

Answer:

The answer is 3

Step-by-step explanation:

I took the test and got it right :)

Answer:

(0, 8)

Step-by-step explanation:

The equation for the transformed logarithm that passes through the points (3,0) and (0,2) can be written as f(x) = -b * log(base a)(x - h) + k, where a, b, h, and k are constants to be determined.

To find the equation for the transformed logarithm, we need to use the given points (3,0) and (0,2) to determine the values of a, b, h, and k. Let's start with the point (3,0). Plugging the x-coordinate (3) into the equation, we have:

0 = -b * log(base a)(3 - h) + k

Next, we'll use the point (0,2) to obtain another equation. Plugging the x-coordinate (0) into the equation, we get:

2 = -b * log(base a)(0 - h) + k

Simplifying these equations, we have a system of equations to solve for a, b, h, and k. However, since the equation involves a logarithm, we need more information to determine the specific values of a, b, h, and k.The transformed logarithm function includes transformations such as vertical stretches/compressions (b), horizontal shifts (h), and vertical shifts (k). Without more specific information about these transformations or the base of the logarithm, it is not possible to determine the equation uniquely.

In general, the equation for a transformed logarithm can be written as f(x) = -b * log(base a)(x - h) + k, where a, b, h, and k are constants determined by the specific transformations applied to the logarithm function. It's important to have additional information or instructions to determine the values of a, b, h, and k and provide an equation that accurately represents the given transformed logarithm.

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Answer:

Use photo math, it will explain all the steps

Answer:

like what do you want to remember.

The expression is constant for b = -7.5, and the constant is 49.5.

A mathematical expression is a phrase that contains at least two terms or numbers and one action. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Given that, The expression 3(5x - 1) + b(2x - 7) is constant

It means the expression doesn't consist of a variable. So, we need to find the 'b' such that the variable 'x' need to be eliminated.

The co-efficient of the 'x' should be '0'.

3(5x - 1) + b(2x - 7)

= 15x - 3 + 2bx - 7b

= (15 + 2b)x - 3 - 7b

Now, 15 + 2b = 0

2b = -15

b = -7.5

On substituting the value of 'b' in the expression,

= -3 - 7 * (-7.5)

= 52.5 - 3

= 49.5

Therefore, The expression is constant for b = -7.5, and the constant is 49.5

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The least that Qinna's arithmetic mean could be is 7.88.

The arithmetic mean, often known as the mean or average when the context is obvious, is the sum of a set of integers divided by the total number of the numbers in the set in mathematics and statistics.

We know that the mode is 7, which means that she must have scored 7 more than any other score. Therefore, the 15 days where she scored 10 cannot be the mode, and they must be some of the remaining 25 scores.

Let's consider the worst-case scenario for Qinna's scores on the other 25 days. We'll assume that she scored a 6 on all of those days. This means that her scores would look like:

15 days with a score of 10

10 days with a score of 7

10 days with a score of 6

5 days with an unknown score, which we'll call x

To find the least possible mean, we want to make x as small as possible. We know that the median is 9, so the 20th and 21st scores must be 9. We also know that there are 25 scores of 6 or higher, so the 25th score must be at least 6. Therefore, the sum of the first 24 scores plus x must be less than or equal to 25 times 6 (the sum of the lowest 25 possible scores).

24(10) + x ≤ 25(6)

240 + x ≤ 150

x ≤ -90

This means that the 5 remaining scores must add up to at most -90. Since the minimum score is 6, the maximum possible value of x is 4 times 6, or 24. Therefore, the least possible value of x is -90, which means that the 5 remaining scores must add up to 90.

To minimize the mean, we want to make these 5 scores as small as possible. If we make all 5 scores equal to 6, then the sum of all 40 scores would be:

15(10) + 10(7) + 10(6) + 5(6) = 315

The mean would be 315/40 = 7.875, which rounded to the nearest hundredth is 7.88.

Therefore, the least that Qinna's arithmetic mean could be is 7.88.

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Answer:

4.24

Step-by-step explanation:

3.64 + 3/5

3.64 + 0.6 <--- 3/5 = 0.6 as a decimal

= 4.24 <--- Final answer

V = 40 m/sec and theta = 34

instead of (theta), i will write (O)

the projectile will come back to the ground at point (a, 0)

so,

y = V (sin O) * t + 0.5 * g * t^2

g = -9.8 m/sec^2

so,

0 = 40 sin 34 * t - 0.5 * 9.8 * t^2

0.5 * 9.8 * t^2 - 40 sin 34 * t = 0

4.9 * t^2 - 22.37 t = 0

solve for t :

take t as a common so, t ( 4.9 t - 22.37) = 0

t = 0 OR 4.9 t - 22.37 = 0

t = 22.37/4.9 = 4.565 sec

so, the projectile will come back to the ground again after 4.565 sec

to find the point at which the projectile come to the ground

x = V (cos O ) * t = 40 * cos34 * 4.565 = 151.38 m

The values from our equation into the quadratic formula, we get:
t = (-(-(1.99 m) (35.9 m/s)) ± √((-(1.99 m) (35.9 m/s))^2 - 4(4.39 m/s^2)(8.04 m))) / (2(4.39 m/s^2))
Simplifying this expression will give us the values of t at which the displacement x(t) is at its maximum.

The equation given to describe the trajectory of an object is x(t) = (1.99 m) (35.9 m/s) t - (4.39 m/s^2)t^2.

To find the time at which the displacement x(t) is at its maximum, we need to determine the maximum point on the trajectory. This can be done by finding the vertex of the parabolic equation.

The equation represents a parabolic trajectory because it includes a term with t^2. The general form of a parabolic equation is y = ax^2 + bx + c, where a, b, and c are constants.

In our case, x(t) = (1.99 m) (35.9 m/s) t - (4.39 m/s^2)t^2, which matches the general form with a = -4.39 m/s^2, b = (1.99 m) (35.9 m/s), and c = 0.

The x-coordinate of the vertex of a parabola can be found using the formula x = -b / (2a). In our case, x = -((1.99 m) (35.9 m/s)) / (2(-4.39 m/s^2)).

Now, let's calculate the value of x.

x = -((1.99 m) (35.9 m/s)) / (2(-4.39 m/s^2))
  ≈ 8.04 m

So, the x-coordinate of the vertex, which represents the displacement x(t) at its maximum, is approximately 8.04 meters.

To find the time at which this maximum displacement occurs, we can substitute this x-coordinate back into the equation x(t) = (1.99 m) (35.9 m/s) t - (4.39 m/s^2)t^2 and solve for t.

8.04 m = (1.99 m) (35.9 m/s) t - (4.39 m/s^2)t^2

To solve this equation, we can rearrange it into a quadratic equation:

(4.39 m/s^2)t^2 - (1.99 m) (35.9 m/s) t + 8.04 m = 0

Now, we can use the quadratic formula to find the values of t that satisfy this equation:

t = (-b ± √(b^2 - 4ac)) / (2a)

Substituting the values from our equation into the quadratic formula, we get:

t = (-(-(1.99 m) (35.9 m/s)) ± √((-(1.99 m) (35.9 m/s))^2 - 4(4.39 m/s^2)(8.04 m))) / (2(4.39 m/s^2))

Simplifying this expression will give us the values of t at which the displacement x(t) is at its maximum.

Please note that calculating the exact values requires precise calculations with the given numbers. However, using the quadratic formula, we can find the two values of t that satisfy the equation and determine when the displacement is at its maximum.

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|| ▼ Answer ▼ ||

8 is correct!

|| ✪ Solution ✪ ||

\(g(x)=2x^{2}-8x+1\)

Vertex of f(x) is:

\((x,y)=(2,1)\)

Graph of g(x) is attached :

Vertex of g(x) is:

\((x,y)=(2,-7)\)

Y- value of vertex f(x) subtract from Y-value of g(x)

\(=1-(-7)\)

\(=1+7\)

\(1+7=8\)

Hope this Helps!

If you have any queries please ask.

Answer:

The yarn used by h number of hats and The yarn used by s number of scarf. hence, the system of equations which represents the situation are:

(1) h+8=20

(2) 4xh=1

Step-by-step explanation:

This is why we move 5 units up and 2 units to the right from the y-intercept to find another point on the line.

In order to graph the line whose equation is y=5/2x+2, we need to begin by plotting the point (0,2) on the graph. This is the y-intercept of the equation, which is where the line crosses the y-axis. From this point, we need to move 5 units up (the rise) and 2 units to the right (the run). This will give us another point on the line. We can then draw a straight line through these two points to graph the equation.

Similarly, to graph the line whose equation is y=5/2x+3, we need to begin by plotting the point (0,3) on the graph. This is the y-intercept of the equation, which is where the line crosses the y-axis. From this point, we need to move 5 units up (the rise) and 2 units to the right (the run). This will give us another point on the line. We can then draw a straight line through these two points to graph the equation.

In both cases, the slope of the line is 5/2, which is the coefficient of x in the equation. The slope tells us how much the line rises or falls for every unit it moves to the right. In this case, the line rises 5 units for every 2 units it moves to the right. This is why we move 5 units up and 2 units to the right from the y-intercept to find another point on the line.

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Answer:

c

Step-by-step explanation:

Answer:

the first one

Step-by-step explanation:

The correct option regarding the correlation coefficient is that A. I can’t be confident at all; this is about as close to a random guess as you can get.

The correlation coefficient is a statistical measure of the strength of a two-variable linear relationship. Its values can range between -1 and 1. A correlation coefficient of -1 denotes a perfect negative, or inverse, correlation, in which values in one series rise while those in the other fall, and vice versa.

A coefficient of one indicates that there is a perfect positive correlation, or a direct relationship. A correlation coefficient of 0 indicates that no linear relationship exists. In science and finance, correlation coefficients are used to assess the degree of association between two variables, factors, or data sets.

In this case, the fat that the person gets 0 implies that it's probably a random guess. In conclusion, the correct option is A.

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Answer:

The interest is $5.80

Step-by-step explanation:

Here, we want to

calculate the interest on $580 for 6 months at a rate of 2%

Mathematically, we use the formula;

I = PRT/100

As T is not up to a year, we did use by 12 which is 6/12 = 0.5

P = 580

R = 2%

Substituting these values in the interest formula, we have;

I = (580 * 2 * 0.5)/100 = $5.80

Answer:

x < −5

Step-by-step explanation:

32 < −5x+7

Step 1: Flip the equation.

−5x+7 > 32

Step 2: Subtract 7 from both sides.

−5x + 7 − 7 > 32 − 7

−5x > 25

Step 3: Divide both sides by -5.

-5x / 5 > 25 / -5

x < −5

for the number line, the point would not be shaded, the point would be at -5 and the arrow would go to the right.

sorry if it doesn't help

Answer:

k=2

Step-by-step explanation:

\((k + 2) {}^{2} - (k - 2)x - 5 = 0\)

If we have two zeroes that are equal in size, but different signs then we have a different of squares,

\((a + b)(a - b) = {a}^{2} - b {}^{2} \)

So in order to do this we must make the middle term, x 0 so

\(k - 2 = 0\)

\(k = 2\)

The samples of size n = 2 that can be drawn from this population is 28

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

Population, N = 8

Sample, n = 2

The samples of size n = 2 that can be drawn from this population is calculated as

Sample = N!/(n! * (N - n)!)

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

Sample = 8!/(2! * 6!)

Evaluate

Sample = 28

Hence, the number of samples is 28

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Complete question

A finite population consists of 8 elements.

10,10,10,10,10,12,18,40

How many samples of size n = 2 can be drawn this population?

Answer:

x= -3 ; y=3

Step-by-step explanation:

x = 27 - 10y

3(27-10y) + 6y = 9

81-30y + 6y = 9

-24y = 9-81

-24y = -72

-24/-24 y = -72/-24

y= 3

x= 27- 10(3)

x = 27 - 30

x = -3

we can estimate that about 29.0% of Americans over 26 smoke based on this sample.

To estimate the proportion of Americans over 26 who smoke, we need to use the sample proportion, which is the number of people in the sample who smoke divided by the total sample size.

In this case, the sample size is 897 and the number of people who don't smoke is 637, so the number of people who do smoke is:

897 - 637 = 260

So the sample proportion of Americans over 26 who smoke is:

260 / 897 = 0.290

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The problem based on condition are solved using the unknown variables. The number of tickets sold to the student are 120 and the number of tickets sold to the adults are 200.

Given information-

The price of the tickets for the basketball game for adults is $4.00.

The price of the tickets for the basketball game for students is $2.50.

Variables are the unknown and the value of the variables depend on the other variables in the equation. The above problem can be solved defining the variables from the given condition.

Let the total tickets purchased by the students is x and the total tickets porches by the adults is y.

As the total tickets sold for the game is $320. Thus,

\(\begin{aligned}\\ x+y&=320\\ y&=320-x\\ \end\)                    .......1

Now as the total money with ticket selling is $1100. Thus,

\(2.5x+4y=110\)

Keep the value of u from the equation 1 in the above equation. We get,

\(\begin{aligned} 2.5x+4(320-x)&=1100\\ 2.5x+1280-4x&=1100\\ -1.5x&=1100-1280\\ -1.5x&=-180\\ x&=\dfrac{180}{1.5} \\ x&=120\\ \end\)

Thus the number of tickets sold to the student are 120.

Keep this value in equation 1,

\(y=320-x\\ y=320-120\\ y=200\)

Thus the number of tickets sold to the adults are 200.

Hence the number of tickets sold to the student are 120 and the number of tickets sold to the adults are 200.

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