a morning​ consult/politico poll of registered voters in july 2020 asked a standard polling question of whether the united states was headed in the​ right direction or was on the​ wrong track. ​% said that things are on the wrong track vs. ​% who said​ right direction. complete parts a and b.a) Calculate the margin of error for the proportion of all U.S. adults who think things are on the wrong track for 95% confidence. ME= 0.019 (Round to three decimal places as needed.) b) Explain what this margin of error means. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) A. The probability that any given adult surveyed from the sample responded "Wrong Track" is____. B. One is 95% confident that the observed proportion of adults that responded "Wrong Track" is within___of the population proportion.C. One is 95% confident that the observed proportion of adults that responded "Wrong Track" is within_____of the sample proportion.D. The probability that any given adult surveyed from the population will respond "Wrong Track" is_____.

The ordered pair (0, 3) does not lie onto any of the four quadrants.

We know in the cartesian plane there are four quadrants.

In the first quadrant (x, y).

In the second quadrant (- x, y).

In the third quadrant (- x, - y).

In the fourth quadrant (x, - y).

Given are some ordered pairs. We know when x = 0 the point lies onto the x-axis and when y = 0 the point lies onto the x-axis.

Out of the given ordered pairs (0, 3) does not belong to any quadrant as it lies onto the y-axis only at 3.

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Answer:

Step-by-step explanation:

-2x + 6 = -6

-2x = -12

x = 6

Answer:

x = 6

Step-by-step explanation:

⚡Hi⚡

-2x + 6 = -6

2x = 12

x = 6

Delete my account please.

Answer:

The common factor of this equation is 8

Step-by-step explanation:

8/8 & 40/8

1 & 5

Answer:

Hi! The answer to your question is 8 (x-5)

Step-by-step explanation:

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Complete question :

Abdul's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Abdul $4.25 per pound, and type B coffee costs $5.90 per pound. This month's blend used twice as many pounds of type B coffee as type A, for a total cost of $337.05 . How many pounds of type A coffee were used?

Answer:

21 pounds

Step-by-step explanation:

Pounds of coffee A used = x

Pounds of coffee B = 2x

Cost per pound of A = $4.25

Cost per pound of B = $5.90

Total cost of coffee = $337.05

4.25x + 2x(5.90) = 337.05

4.25x + 11.8x = 337.05

16.05x = 337.05

x = 337.05 / 16.05

x = 21

Hence, 21 pounds of coffee A was used

The cost price of the article is 160,000$

A woman old an article for 200,000.00$ and made a profit of 25%

The financial gain a business has when revenue exceeds costs and expenses is frequently referred to as profit.

The formula Profit = Selling Price - Cost Price can be used to determine the profit when the selling price and the cost price of a product are known. The formula for calculating profit percentage is then applied, which is profit percentage = (profit/cost price) x 100.

X  x 25/100 + X = 200,000

25X/100 + X =200,000

X= 200,000-25X/100

X= (20,000,000-25X) / 100

100X = 20,000,000-25X

125X = 20,000,000

X = 160000

cost + 25% of cost = 200,000

cost (1+25/100)= 200,000

cost (1+1/4)=200,000

cost (5/4)=200,000

cost=200,000x(4/5)

=40000x4

= 160,000

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Answer:

5/3

Step-by-step explanation:

rise over run

(y2-y1)/(x2-x1)

(-2-3)=-5

(-2-1)=-3

f(x) = abˣ

"A scientist begins with 130 milligrams", or we can word it differently.

when x = 0, f(x) = 130, which in short simply means a = 130.

"After 30 hours, 65 mg of the substance remains", worded differently.

when x = 30, f(x) = 65.

\(f(x)=ab^x~\hspace{10em}\underline{f(x)=130b^x} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} ~\hfill x&=30\\ f(x)&=65 \end{cases}\qquad \implies 65=130b^{30}\implies \cfrac{65}{130}=b^{30}\implies \cfrac{1}{2}=b^{30}\)

\(\sqrt[30]{\cfrac{1}{2}}=b\implies \cfrac{\sqrt[30]{1}}{\sqrt[30]{2}}=b\implies \cfrac{1}{\sqrt[30]{2}}=b~\hfill \underline{f(x)=130\left( \cfrac{1}{\sqrt[30]{2}} \right)^x} \\\\[-0.35em] ~\dotfill\\\\ \textit{when x = 56, what is f(x)?}\qquad f(x)=130\left( \cfrac{1}{\sqrt[30]{2}} \right)^{56}\implies f(x)\approx 35.647\)

To find the slope of the curve \(y=x^2-4x-5\) at the point P(3,-8) using the limit of the secant slopes, we need to calculate the slope between P and nearby point on curve as distance between points approaches zero.

The slope of a curve at a specific point can be approximated by calculating the slope of a secant line that passes through that point and a nearby point on the curve. In this case, we are interested in finding the slope at point P(3,-8). Let's choose another point on the curve, Q, with coordinates (x, y). The slope of the secant line passing through points P and Q is given by (y - (-8))/(x - 3). To find the slope of the curve at point P, we need to calculate the limit of this expression as the point Q approaches P.

To do this, we substitute the equation of the curve, \(y=x^2-4x-5\), into the expression for the slope of the secant line. We have (x^2-4x-5 - (-8))/(x - 3). Simplifying this expression gives \((x^2-4x+3)/(x-3)\). Taking the limit of this expression as x approaches 3, we get \((3^2-4(3)+3)/(3-3)\), which becomes (9-12+3)/0. Since we have a 0 in the denominator, we cannot directly evaluate the limit. However, this form suggests that we have a factor of (x-3) in both the numerator and denominator. Factoring the numerator further gives ((x-3)(x-1))/(x-3). Canceling out the common factor (x-3), we are left with (x-1). Substituting x=3 into this expression gives the slope of the curve at point P as (3-1), which is equal to 2.

Therefore, the slope of the curve \(y=x^2-4x-5\) at point P(3,-8) is 2.

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The cone shaped pile can hold 235.5 feet sand.

What is volume of cone ?

  One-third the sum of the area of the cone's circular base and its height is the formula for a cone's volume. Cones are described as pyramids with circular cross sections in terms of geometric and mathematical ideas. A cone's volume can be quickly determined by measuring the cone's height and radius.

Here radius of cone = 5 feet

Height of cone h = 8 feet 10 inches = 8+1 = 9 feet

Now volume of cone is

=> V = \(\pi r^2\frac{h}{3}\) cubic unit

=> V= 3.14* 25 * 3 = 235.5 cubic feet.

Hence the cone shaped pile can hold 235.5 feet sand.

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Answer:

4.5 teaspoons of vanilla

Step-by-step explanation:

We can do this by multiplying:

3/4*(6)

18/4

9/2

4.5 teaspoons of vanilla

Answer:

Step-by-step explanation:

Change into improper fraction

\(-2\frac{5}{8}*4\frac{1}{3}=\frac{-21}{8}*\frac{13}{3}\\\\ = \frac{-7}{8}*\frac{13}{1}\\\\=\frac{-91}{8}\\\\=-11\frac{3}{8}\)

The best estimate of the system solution to the nearest integer values is (2,3).

The coordinates represent the location of a point in the 2D coordinate plane with respect to the origin. A point's x-coordinate is its perpendicular distance from the y-axis as measured along the x-axis. A point's y-coordinate is the perpendicular distance from the x-axis measured along the y-axis. A point's Cartesian coordinates (also known as rectangular coordinates) are a pair of integers (in two dimensions) or a triplet of numbers (in three dimensions) indicating signed distances from the coordinate axis. A point's coordinates are a pair of integers that define its precise location on a two-dimensional plane. Remember that the coordinate plane contains two axes that are perpendicular to each other, known as the x and y axes.

Here,

This question is asking us what the coordinates are for the point of intersection. Since the point is not directly on the grid lines, we must approximate.

The point is closest to the value "2" on the x axis.

The point is closest to the value "3" on the y axis.

This means the correct point is (2,3).

The best approximation of the solution to the system to the nearest integer values is (2,3).

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The answer is (d) 100, which is the expected frequency for each group.

To determine the expected frequency for each group under the assumption of a uniform distribution of opinions, we can use the formula:

Expected frequency = (total sample size) x (proportion of group in population)

The total sample size is 300, and the proportions of Democrats, Republicans, and Independents in the population are not given, so we cannot use those directly. However, if we assume that the population proportions are roughly the same as the sample proportions, we can estimate the expected frequencies as follows:

Expected frequency for Democrats = 300 x (100/300) = 100

Expected frequency for Republicans = 300 x (120/300) = 120

Expected frequency for Independents = 300 x (80/300) = 80

Therefore, the answer is (d) 100, which is the expected frequency for each group if the opinions of the individuals of the three groups are uniformly distributed.

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Answer:

\( x = \dfrac{9}{8} \pm \dfrac{\sqrt{241}}{8} \)

Step-by-step explanation:

\( x^2 + \dfrac{9}{-4}x + \dfrac{81}{64}= \dfrac{5}{2} + \dfrac{81}{64} \)

\( \dfrac{-4x^2}{-4} + \dfrac{9x}{-4} = \dfrac{-10}{-4} \)

\( x^2 + \dfrac{9}{-4}x + \dfrac{81}{64} = \dfrac{5}{2} + \dfrac{81}{64} \)

\( (x - \dfrac{9}{8})^2 = \dfrac{241}{64} \)

\( x - \dfrac{9}{8} = \pm\sqrt{\frac{241}{64}} \)

\( x = \dfrac{9}{8} \pm \dfrac{\sqrt{241}}{8} \)

Answer:

D. 29 I just know the awnser sorry

To find the value of f(−2), we substitute −2 for x in the function f(x):

f(−2) = 4(-2)^2 − 3(-2) + 7

= 4(4) − 3(2) + 7

= 16 − 6 + 7

= 11

Therefore, f(−2) = 11.

Step-by-step explanation:

there should 90 value

the value of triangle is 90

Answer:

area = 8.03

Step-by-step explanation:

\(area= \frac{ab\sin\C}{2}\)

Answer:

57

Step-by-step explanation:

7 times 7 or 7 to the power of 2 is 49 plus 7 is 56 and then plus 1 makes that 57

Answer:

57

Step-by-step explanation:

n^2+n+1 (n=7)

7^2+n+1

49+7+1

49+8

57

Answer:

24

Step-by-step explanation:

12*2=2

2.4 rounds down

We can say that the value of k will be equal to the y-coordinate of the center of the circle (since k represents the y-coordinate of the center).

To answer this question, we need to use the equation of a circle:

(x - h)^2 + (y - k)^2 = r^2

Where h and k represent the coordinates of the center of the circle, and r represents the radius. In this case, we are given that the circle has center (h, k) and radius 10. So we can write:

(x - h)^2 + (y - k)^2 = 10^2

We are asked to find the value of k. To do this, we need to look at the equation of the circle and notice that the y-coordinate is paired with k. This means that we can isolate k by rearranging the equation as follows:

(y - k)^2 = 10^2 - (x - h)^2

y - k = ±√(10^2 - (x - h)^2)

k = y ±√(10^2 - (x - h)^2)

Since we don't have any information about the x-coordinate, we can't solve for a specific value of k. However, we can say that the value of k will be equal to the y-coordinate of the center of the circle (since k represents the y-coordinate of the center). Therefore, the answer is:

k = y

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There may have been some bias or non-randomness in the selection process of the children for the community project.

To test whether the children were randomly selected, we can conduct a hypothesis test using the following steps:

Step 1: State the null and alternative hypotheses

Null hypothesis: The proportion of low-income children in the sample is equal to the proportion of low-income children in the population (i.e., p = 0.80).

Alternative hypothesis: The proportion of low-income children in the sample is not equal to the proportion of low-income children in the population (i.e., p ≠ 0.80).

Step 2: Determine the level of significance

Assuming a level of significance of 0.05, we want to find out whether the sample provides strong evidence to reject the null hypothesis in favor of the alternative hypothesis.

Step 3: Calculate the test statistic

We can use the z-test for proportions to calculate the test statistic, which measures the number of standard errors between the sample proportion and the population proportion under the null hypothesis.

z = (p - p) / √[p(1-p) / n]

where:

p = sample proportion

p = hypothesized population proportion

n = sample size

Using the given information, we have:

p = 0.74

p = 0.80

n = 200

Plugging in the values, we get:

z = (0.74 - 0.80) / √[(0.80)(1-0.80) / 200] = -2.33

Step 4: Determine the p-value

We need to find the probability of obtaining a z-score as extreme as -2.33 or more extreme (in either direction) if the null hypothesis is true. This is the p-value.

Using a standard normal distribution table or calculator, we find that the p-value is approximately 0.0202.

Step 5: Make a decision

Since the p-value (0.0202) is less than the level of significance (0.05), we reject the null hypothesis. This means that there is strong evidence to suggest that the sample proportion of low-income children is significantly different from the population proportion. In other words, it is unlikely that the sample was randomly selected from the population.

Therefore, further investigation may be needed to identify the potential sources of bias and take corrective actions.

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Answer:

(i) 458000 (ii) 10486

Step-by-step explanation:

(i) (729)²-(271)²

The identity is : \(a^2-b^2=(a-b)(a+b)\)

(729)²-(271)² = (729-271) × (729+271)

= 458 × 1000

= 458000

(ii) 98x107 = (100-2) (100+7)

Idenity : \((x-a)(x-b) = x^2+(a+b)x+ab\)

\((100-2) (100+7)=100^2+(-2+7)100+(-2)(7)\\\\=10000+500-14\\\\=10486\)

Hence, this is the required solution.

In summary, the Fourier coefficients for the periodic function y(t) = -3 on the interval -5 ≤ t ≤ 5 are:

c₀ = -3 (DC component)

cₙ = 0 for n ≠ 0 (other coefficients)

To find the Fourier coefficients of the periodic function y(t) = -3 on the interval -5 ≤ t ≤ 5, we can use the formula for Fourier series coefficients:

cn = (1/T) ∫[t₀-T/2, t₀+T/2] y(t) \(e^{(-i2\pi nt/T)}\) dt

where T is the period of the function and n is an integer.

In this case, the function y(t) is constant, y(t) = -3, and the period is T = 10 (since the interval -5 ≤ t ≤ 5 spans 10 units).

To find the Fourier coefficient c₀ (corresponding to the DC component or the average value of the function), we use the formula:

c₀ = (1/T) ∫[-T/2, T/2] y(t) dt

Substituting the given values:

c₀ = (1/10) ∫[-5, 5] (-3) dt

  = (-3/10) \([t]_{-5}^{5}\)

  = (-3/10) [5 - (-5)]

  = (-3/10) [10]

  = -3

Therefore, the DC component (c₀) of the Fourier series of y(t) is -3.

For the other coefficients (cₙ where n ≠ 0), we can calculate them using the formula:

cₙ = (1/T) ∫[-T/2, T/2] y(t)\(e^{(-i2\pi nt/T) }\)dt

Since y(t) is constant, the integral becomes:

cₙ = (1/T) ∫[-T/2, T/2] (-3) \(e^{(-i2\pi nt/T)}\) dt

  = (-3/T) ∫[-T/2, T/2] \(e^{(-i2\pi nt/T)}\) dt

The integral of e^(-i2πnt/T) over the interval [-T/2, T/2] evaluates to 0 when n ≠ 0. This is because the exponential function oscillates and integrates to zero over a symmetric interval.

all the coefficients cₙ for n ≠ 0 are zero.

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Answer:

y = \(\frac{1}{3}\) x

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here slope m = \(\frac{1}{3}\) , then

y = \(\frac{1}{3}\) x + c ← is the partial equation

to find c substitute (- 9, - 3) , that is x = - 9, y = - 3 into the partial equation

- 3 = \(\frac{1}{3}\) (- 9) + c = - 3 + c ( add 3 to both sides )

0 = c

y = \(\frac{1}{3}\) x + 0 , that is

y = \(\frac{1}{3}\) x

The angle of depression the plane should descend is 1.43 degrees.

A plane is flying at an altitude of 25,000 ft when it start it descent to the airport. The plane is a horizontal distance of 1000,000 ft from the airport.

Therefore, let's find the angle of depression.

Hence, this situation forms a right angle triangle.

Therefore,

tan ∅ = opposite / adjacent

where

Hence,

tan ∅ = 25000 / 1000000

∅ = tan⁻¹ 25 / 1000

∅ =  tan⁻¹  0.025

∅ = 1.43209618416

∅ = 1.43 degrees

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Answer:

Answer is 3.83

Step-by-step explanation:

Basically 23 divided by 6 is 3.83

Answer:

  7

Step-by-step explanation:

You want the common difference of the arithmetic sequence that starts ...

  15, 22, 29, ...

The common difference is the difference between a term and the one before. It is "common" because the difference is the same for all successive term pairs.

  22 -15 = 7

  29 -22 = 7

The common difference is 7.

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Answer:

yes its a polynomial espero te sirva

Answer:

D

Step-by-step explanation:

on edu 2020

Answer:

D (3,8)

Step-by-step explanation:

On edge