Please help me.

The elevation of city A is 80 feet below sea level; the elevation of city C is 16 feet below sea level. the elevation of city D is 1/2 of the elevation of city C. Part A: Write and expression to represent the elevation,in feet, of city D. Part B. Solve the Expression and explain why the answer is a negative or positive .

By interpretating the graph of a quadratic equation, the initial height of the ball is equal to 5 feet above ground.

In this problem we must determine the initial height of the ball according to a graph, whose form resembles quadratic equations. Graphically speaking, the initial height is the y-coordinate of the y-intercept. First, the coordinates of the y-intercept of the equation are:

(t, h) = (0 s, 5 ft)

Second, the final height of the ball is equal to:

h = 5 ft

To learn more on quadratic equations: https://brainly.com/question/29011747

#SPJ1

The correct answer is Part 1: The 99% confidence interval for the population proportion is approximately (0.4716, 0.5416).Part 2: With 99% confidence, the population proportion of adults who say they have started paying bills online in the last year is between the endpoints of the given confidence interval.

Part 1:

To construct a 99% confidence interval for the population proportion, we can use the formula:

Confidence Interval = Sample Proportion ± Margin of Error

where the margin of error is determined by the level of confidence and the standard error.

First, let's calculate the sample proportion:

Sample Proportion = (Number of adults who say they have started paying bills online) / (Total number of adults surveyed)

Sample Proportion = 1436 / 2837 ≈ 0.5066 (rounded to four decimal places)

Next, we need to calculate the standard statistics error, which is the measure of the variability in the sample proportion:

Standard Error = sqrt((Sample Proportion * (1 - Sample Proportion)) / Sample Size)

Standard Error = sqrt((0.5066 * (1 - 0.5066)) / 2837) ≈ 0.0136 (rounded to four decimal places)

Now, we can calculate the margin of error:

Margin of Error = Critical Value * Standard Error

The critical value is based on the desired confidence level. For a 99% confidence level, the critical value is approximately 2.576 (obtained from a standard normal distribution table).

Margin of Error = 2.576 * 0.0136 ≈ 0.0350 (rounded to four decimal places)

Finally, we can construct the confidence interval:

Confidence Interval = Sample Proportion ± Margin of Error

Confidence Interval = 0.5066 ± 0.0350

Confidence Interval ≈ (0.4716, 0.5416) (rounded to four decimal places)

Part 2:

The correct interpretation is:

C. With 99% confidence, it can be said that the population proportion of adults who say they have started paying bills online in the last year is between the endpoints of the given confidence interval.

This means that we are 99% confident that the true proportion of adults who have started paying bills online falls within the range of 0.4716 to 0.5416. The survey results suggest that approximately 47.16% to 54.16% of the population of adults have started paying bills online in the last year.

Learn more about statistics here:

https://brainly.com/question/15525560

#SPJ8

Answer:

The function shifted up to 3 units.

Step-by-step explanation:

To approach this situation, use the transformation rules for functions:

Therefore, if the function created is represented as:

The function shifted up to 3 units.

Answer:

it will be 11900 in 20 years.

Answer:

3.33 repeated

Step-by-step explanation:

Since we know that 12 copies are $40, we can set up an equation which would look like this.... 40/12=1/x in order to find the unknown, let's call that x, we have to divide both the 40 AND the 12 by 12, the reason we are diving by 12 and not 40 is because we need to identify the cost per copy.

So the overall answer would be 3.33 dollars/1 copy in other words $3.33 per one copy.

Answer:

10.4403 or the square root of 109

Step-by-step explanation:

We do this by finding the height (3) and squaring it then the base (10) and squaring that, this sets up the Pythagorean theorem which is A^2+B^2=C^2 then you square C to find it's value

you apply the concept of vertical angles and 180-degree angle

add  43 and 74 to get 117 now subtract it by 180 you get 63 for angle 1

now since angle 1 and 2 are vertical they are both 63

now for angle 3 you add 63 plus 79 is 142 so,  we subtract 142 by 180

therefore, angle 3 is  38 degrees

remember angles cannot be negative at all!

Answer:

(-5, -2)

Step-by-step explanation:

To find the midpoint between two points you can find the difference between the two x coordinates and the two y coordinates.

x: -8 and -2 are 6 units away from each other

y: -8 and 4 are 12 units away from each other

You can then divide the difference by two

x: 3

y: 6

Then add the divided difference to the lower number coordinate.

x: -8+3= -5

y: -8+6= -2

Answer:

C.

15

Step-by-step explanation:

Question:

Solution:

a) Consider the following equation:

applying the distributive property, we get:

now, putting all terms on one side of the equation, we get:

this is equivalent to:

Factoring this expression, we get:

according to the equation, we can conclude that the solutions for the given equation are:

and

b) Consider the following equation:

applying the quadratic formula:

where

a = 6,

b = 9

and

c = -22,

we obtain that the solutions of the given equations are:

and

The area of the triangle is 47.91 units²

When all three sides of the triangle are known we can use Heron's formula. Consider the triangle ABC with sides a, b, and c has shown in the image.

Heron’s formula is:

Area =√s(s−a)(s−b)(s−c)

where,

a, b, c are the side length of the triangle

s is the semi-perimeter. s = (a+b+c)/2

In this case:

Using the knowledge of the radius of a circle. We can say:

a = BC = 3 + 9 = 12 units

b = AC = 5 + 3 = 8 units

c = AB = 5 + 9 = 14 units

s = (a+b+c)/2

s = (12+8+14)/2

s = 34/2

s = 17 units

Area = √s(s−a)(s−b)(s−c)

Area = √17(17−12)(17−8)(17−14)

Area = √17(5)(9)(3)

Area = √2295

Area = 47.91 units²

Learn more about area of triangle on:

https://brainly.com/question/1058720

#SPJ1

A taxpayer's taxable income is reduced by the standard deduction. It makes sure that only families who make more than a specific amount of money will have to pay income tax. When submitting their tax returns, taxpayers have the option to take the standard deduction, which lowers their taxable income and the amount of taxes they must pay.

You might have to spend more time on your tax return. If you itemize, you'll need to set aside extra time when preparing your returns to fill out the big enchilada of tax forms: the Form 1040 and Schedule A, as well as the supporting schedules that feed into those forms.

Add up your itemized deductions and compare the total to the standard deduction available for your filing status. If your itemized deductions are greater than the standard deduction, then itemizing makes sense for you. If you're below that threshold, then claiming the standard deduction makes more sense.

To learn more about standard deduction visit:

https://brainly.com/question/21481799

#SPJ4

Answer:

4m + 2m = 6m

Step-by-step explanation:

The domain is {-8, -12, 1, -2} and the range is {5, -11, -1, -4}

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

The graph

On the graph, we have

(-8,5) (-12,-11)  (1-1) (-2,-4)

The domian is the set of the input values

Using the ordered pairs as a guide, we have

Domain = {-8, -12, 1, -2}

For the range, we have

The range is the set of the output values

So, we have

Range = {5, -11, -1, -4}

Hence, the range is  {5, -11, -1, -4}

Read more about domain and range at

brainly.com/question/2264373

#SPJ1

Answer:

A. 16

Step-by-step explanation:

The union of sets A and B is {1, 2, 3, 4, 5, 6, 7, 8}.

The union of two sets A and B is the set of all elements that are in A, or B, or both. In this case, the elements in set A are {1, 2, 3, 4, 5} and the elements in set B are {5, 6, 7, 8}.

To find the union of these sets, we simply combine all the elements from both sets but remove any duplicates.

Therefore, the answer that shows the union of sets A and B is {1, 2, 3, 4, 5, 6, 7, 8}, since it contains all the elements from both sets without any duplicates.

Learn more about union of sets on:

brainly.com/question/2166579

#SPJ1

Answer:

(f+g)(x) = x²-x-3

Step-by-step explanation:

2x-1 + x² -3x-2

x²-x-3

Answer:

\((f + g)(x)\) = \(x^2 - x - 3\)

Step-by-step explanation:

• We are given:

\(f(x) = 2x -1\)

\(g(x) = x^2 -3x -2\)

• To calculate \((f + g)(x)\), we have to add the expressions for \(f(x)\) and \(g(x)\)

⇒ \(f(x) + g(x)\)

⇒ \(2x-1 + x^2 -3x -2\)

⇒ \(x^2 - x - 3\)

Answer:c

Step-by-step explanation is va cuz when your multiply:

Answer:

\(\sqrt[6]{2}\left(\cos\left(\frac{3\pi}{4}\right)+i\sin\left(\frac{3\pi}{4}\right)\right)\)

Step-by-step explanation:

The analysis is as attached below.

#CarryOnLearning

Answer:

1.) False

The product \(\bold{\frac{5}{2}}\)(\(\bold{\frac{4}{25}}\)) will give the unit price of one kilogram of rice.

2.) False

Emily paid less than $1.50 per kilogram of rice.

3.) True

If Emily has $1.00 \:to\: spend\: on\: rice, she\: can\: get \(\frac{4}{10}\)$ of a kilogram of rice.

#CarryOnLearning

The finite element method permits one to use d. all of the above.

Finite element method this numerical solving method that popular to use for differential equation in mathematical modeling or engineering.

The field that use this method to solve the problem is including heat transfer, mass transport, structural analysis, fluid flow, and electromagnetic potential.

Finite element method use the triangular elements, quadrilateral element, or rectangular element in the same level as its use is determined by the user.

Thus, all the element in group of choices is correct.

Learn more about quadrilateral here:

brainly.com/question/26690979

#SPJ4

A pair of corresponding angles, alternate interior angles, and alternate exterior angles include the following:

Corresponding angles: ∠1 ≅ ∠5.

Alternate interior angles: ∠4 ≅ ∠6.

Alternate exterior angles: ∠2 ≅ ∠8

In Mathematics, corresponding angles can be defined as a postulate (theorem) which states that corresponding angles are always congruent when the transversal intersects two (2) parallel lines:

∠1 ≅ ∠5

By applying the alternate interior angles theorem to parallel lines m and n, we have the following congruent angles:

∠4 ≅ ∠6

By applying the alternate exterior angles theorem to parallel lines m and n, we have the following congruent angles:

∠2 ≅ ∠8

Read more on alternate interior angle here: https://brainly.com/question/24839702

#SPJ1

The missing numbers are a = 25 and b = 92.

Let's start by finding the mean of the given numbers. The mean is calculated by summing all the numbers and dividing the sum by the total count. In this case, we have:

(a + 31 + 42 + 65 + b) / 5 = 51

Now, we can simplify the equation:

a + 31 + 42 + 65 + b = 51 x 5

a + 138 + b = 255

Next, we know that the greatest number is 67 more than the least number:

b = a + 67

Now we can substitute this value into the previous equation:

a + 138 + (a + 67) = 255

Combining like terms:

2a + 205 = 255

Subtracting 205 from both sides:

2a = 50

Dividing both sides by 2:

a = 25

Substituting this value back into the equation b = a + 67:

b = 25 + 67

b = 92

Therefore, the missing numbers are a = 25 and b = 92.

To learn more about the system of equations;

brainly.com/question/13729904

#SPJ1

Answer:

ractions division calculator is an online basic math function tool to find what's the equivalent fraction for dividing 8/9 by 2/3. 8/9 ÷ 2/3 = 24/18 as simplified as 4/3 in fraction form. 8/9 ÷ 2/3 = 1.3333 in decimal form.

Step-by-step explanation:

Answer:

what grade is thistfgydyfyryhehdhufhf

Answer:

a) n2+ 3

So, first term is (1)²+3=4

Second term is (2)²+3=7

Third term is (3)²+3=12

Fouth term is (4)²+4=20

b) 2n2

So, first term is (1)²+2=3

Second term is (2)²+2=6

Third term is (3)²+2=11

Fouth term is (4)²+2=18

Answer:

( a )

First 4 terms are 4,7,12,19 and the 10th term is 103.

( b )

First 4 terms are 2,8,18,32 and the 10th term is 200.

Step-by-step explanation:

We are given both general term of sequence:

\( \displaystyle \large{ (a) \: \: \: {n}^{2} + 3} \\ \displaystyle \large{ (b) \: \: \: 2{n}^{2}}\)

Let's get to the first sequence.

( a )

We are given:-

\( \displaystyle \large{ {n}^{2} + 3} \)

To find first 4 terms, substitute n = 1,2,3,4 in.

Therefore:-

\( \displaystyle \large{ {1}^{2} + 3 = 4} \\ \displaystyle \large{ {2}^{2} + 3 = 4 + 3 = 7} \\ \displaystyle \large{ {3}^{2} + 3 = 9 + 3 = 12} \\ \displaystyle \large{ {4}^{2} + 3 = 16 + 3 = 19} \)

Therefore, first 4 terms are 4,7,12,19.

Next, to find the 10th term, just substitute n = 10.

\( \displaystyle \large{ {10}^{2} + 3 = 100 + 3 = 103} \)

And we're done for part a!

( b )

We are given:-

\( \displaystyle \large{ 2{n}^{2}}\)

Do the same, substitute n = 1,2,3,4 in.

\( \displaystyle \large{ 2({1})^{2} = 2} \\ \displaystyle \large{ 2({2})^{2} = 2(4) = 8} \\ \displaystyle \large{ 2({3})^{2} = 2(9) = 18} \\ \displaystyle \large{ 2({4})^{2} = 2(16) = 32}\)

Therefore, first 4 terms are 2,8,18,32.

Next, find the 10th term, substitute n = 10 in.

\( \displaystyle \large{ 2{(10)}^{2} = 2(100) = 200} \)

Thus, the 10th term is 200.

The best i could find out is 450p