How do you graph y = √ 5 - x? How do I find the coordinates by hand?

Answer:

x² + 34x + 104 = 0

x² + 34x = -104

x² + 34x + ((1/2)(34))² = -104 + ((1/2)(34))²

x² + 34x + 17² = -104 + 17²

x² + 34x + 289 = 185

(x + 17)² = 185

x + 17 = +√185

x = -17 + √185

The fourth-order accurate finite difference approximation is:

u00(x) = c−2u(x − 2h) + c−1u(x − h) + c0u(x) + c1u(x + h) + c2u(x + 2h) + O(h4).

Compute the coefficients using the matlab code fdstencil.m and check that they satisfy the system you determined in part (a).

Test this finite difference formula to approximate u

00(1) for u(x) = sin(2x) with values of h from the array hvals = log space(-1, -4, 13). Make a table of the error vs. h for several values of h and compare against the predicted error from the leading term of the expression printed by  fdstencils.

You should observe the predicted accuracy for larger values of h. For smaller values, numerical cancellation in computing the linear combination of u values impacts the accuracy observed.

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Answer:

answer is

\( {2.94 \times 10}^{ - 3} \)

Step-by-step explanation:

3*1/1000-6*1/100000=0.003-0.00006

=

\( {2.94 \times 10}^{ - 3} \)

Answer:

p = 7

Step-by-step explanation:

(x² + px - 3)(3x - 5)

each term in the second factor is multiplied by each term in the first factor, that is

x²(3x - 5) + px(3x - 5) - 3(3x - 5) ← distribute parenthesis

= 3x³ - 5x² + 3px² - 5px - 9x + 15 ← collect like terms

= 3x³ +x²(3p - 5) - x(5p + 9) + 15

given the coefficient of the x- term is - 44 , then

-(5p + 9) = - 44 ← - (5p + 9) is th coefficient of x in the expansion

- 5p - 9 = - 44 ( add 9 to both sides )

- 5p = - 35 ( divide both sides by - 5 )

p = 7

It will take the second car 36 hours to cover the same distance.

Let's call the distance between the starting points of the two cars "D". Since the cars are moving toward each other, their combined speed is the sum of their individual speeds. Therefore, the combined speed of the two cars is:

120 km/h + 60 km/h = 180 km/h

If it takes the first car 9 hours to cover half the distance (D/2), then we can use the formula for speed, distance, and time:

distance = speed x time

D/2 = 120 km/h x 9 h

D/2 = 1080 km

Multiplying both sides by 2, we get:

D = 2160 km

Now we know that the distance between the starting points is 2160 km. To find out how long it will take the second car to cover the same distance at 60 km/h, we can use the same formula:

distance = speed x time

2160 km = 60 km/h x time

time = 2160 km / 60 km/h

time = 36 hours

Therefore, it will take the second car 36 hours to cover the same distance.

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Answer:

\(\sf -3xy\left(2x^2-3xy+4y^2\right)\)

Step-by-step explanation:

\(\sf -6x^3y+9x^2y^2-12xy^3\)

To factor the GCF of 6x³y + 9x²y2 - 12xy³ let's apply the exponent rule:-

\(\boxed{\sf a^{b+c}=a^ba^c}\)

\(\boxed{\sf x^3y=xx^2y,\:x^2y^2=xxyy,\:xy^3=xyy^2}\)

\(\sf -6xx^2y+9xxyy-12xyy^2\)

Rewrite,

\(\sf 2\cdot \:3xx^2y+3\cdot \:3xxyy+4\cdot \:3xyy^2\)

Now, factor out the common term \(\sf -3xy\):-

__________________________

Answer:

25.7 cm

Step-by-step explanation:

the answer is 10 cm

Step-by-step explanation:

area= L×H

5×2

Answer:

D. Section A; students in this section scored between 1 and 10

Step-by-step explanation:

This answer is correct because the graph shows everything that was explained in the answer. Hope that helps!!

Answer:

C.  4(3x+2)

Step-by-step explanation:

Each side of a square is equal to each other, so the perimeter would be 4*(3x+2).

Learning math can be a challenging task, but with persistence, hard work, and effective study strategies, it is definitely possible to improve your math skills.

Start with the basics: Make sure you have a good foundation in basic math concepts before moving on to more advanced topics. Practice basic arithmetic, fractions, decimals, and percentages until you feel comfortable with them.

Focus on understanding, not just memorizing: Math is not just about memorizing formulas and equations; it's about understanding how and why they work. Focus on understanding the underlying concepts and principles.

Practice regularly: The more you practice, the better you will get. Try to set aside some time each day to practice math problems. This will help you build your skills and improve your understanding.

Use multiple resources: Don't just rely on one textbook or resource. Use multiple resources such as online tutorials, videos, practice problems, and textbooks to get a well-rounded understanding of the topic.

Seek help when needed: Don't hesitate to ask for help if you are struggling with a particular topic. You can reach out to a teacher, tutor, or online community for help.

Stay motivated: Math can be challenging, but it's important to stay motivated and not give up. Keep a positive attitude, celebrate your successes, and remember that every mistake is an opportunity to learn and grow.

Remember that learning math takes time and effort, so don't get discouraged if you don't see immediate results. With persistence and hard work, you can become proficient in math.

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The ΔH (enthalpy change) for aluminum when it is heated from 0.0°C to 100.0°C is 2074.19 J.

The expression given for the temperature-dependent heat capacity of a substance is:

c_p = a + bT + cT^2

where c_p is the heat capacity in J/K, T is the temperature in °C, and a, b, and c are coefficients.

To calculate the ΔH (enthalpy change) for aluminum when it is heated from 0.0°C to 100.0°C, we need to integrate the heat capacity expression with respect to temperature over the given temperature range.

ΔH = ∫(c_p dT)

First, let's substitute the given coefficients into the expression:

c_p = 20.68 + (12.38×10^-3)T + 0

Next, we integrate the expression over the temperature range of 0.0°C to 100.0°C:

ΔH = ∫[20.68 + (12.38×10^-3)T] dT

Integrating with respect to T gives:

ΔH = 20.68T + (12.38×10^-3)(T^2/2)

To evaluate the integral, we substitute the upper and lower temperature limits:

ΔH = 20.68(100.0) + (12.38×10^-3)((100.0)^2/2) - [20.68(0.0) + (12.38×10^-3)((0.0)^2/2)]

Simplifying the equation gives:

ΔH = 2068 + 6.19

ΔH = 2074.19 J

Therefore, the enthalpy change (ΔH) for aluminum when it is heated from 0.0°C to 100.0°C is 2074.19 J.

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Answer:

4%

Step-by-step explanation:

Divide 2 by 50

2 / 50 = 0.04

0.04 x 100 = 4%

The total volume of the two circular cylinders intersecting perpendicularly is\(V=πr2+πr3=πr2(1+r)\).

The volume of the two circular cylinders intersecting perpendicularly can be calculated using the triple integral formula in rectangular coordinates. The triple integral formula is V=∫∫∫dzdydx.

We can separate the integral into three components. The x-component is ∫dx from \(-√r2-y2 to √r2-y2\). The y-component is ∫dy from -r to r. The z-component is ∫dz from 0 to r.

Substituting the components into the equation for the triple integral, we get \(V=∫-rrdr∫-√r2-y2√r2-y2dx∫0rdz\).

We can solve the integral by splitting the y-component into two pieces:

\(V=∫-rrdr∫-r0dx∫0rdz+∫-rrdr∫0√r2-y2dx∫0rdz\)

The first integral can be solved easily and yields V=πr2. The second integral can be solved using the substitution u=r2-y2 and yields V=πr3.

Hence, the total volume of the two circular cylinders intersecting perpendicularly is V=πr2+πr3=πr2(1+r).

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Answer:

\(\sqrt{85}\) or 9.21954

Step-by-step explanation:

Use the distance formula to determine the distance between the two points.

\(d = \sqrt{(x_{2} -x_{1})^{2} + (y_{2} - x_{1})^{2} }\)

d = distance

\((x_{1}, y_{1})\) = coordinates of the first point

\((x_{2}, y_{2})\) = coordinates of the second point

Angle 4 and 7= Interior angles

Angle 12 and 16= Corresponding angles

Angle 1 and 14= Alternate exterior angles

Angle 5 and 10=Alternate angles

angle 6 and 7 are alternate angles I think.

Employers can use your credit report for the purpose of getting information. Then the correct option is B.

The process of making choice is by identifying the correct decision, gathering information, and assessing alternative solutions.

Employers can access your credit score or report. However, depending on the state you live in, it may be able to pull a credit score, or at least a modified version. The pulled score by your employer likely will not include your number or date of birth, but it does not pose a security risk for you.

a. Friends - They can not use your credit report.

b. Employers - They can use your credit report.

c. Neighbors - They can not use your credit report.

d. Teachers - They can not use your credit report.

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Answer:

Pretty sure its 909. 83 percent of 1093 is 908.02. If you round it to the nearest person, it is 909

Step-by-step explanation:

a) To find the sample proportion, we divide the number of adults who use at least one prescribed medication (2455) by the total number of adults surveyed (3005):

Sample proportion (p-hat) = 2455/3005 ≈ 0.816 (rounded to three decimal places)

To express it as a percentage, we multiply by 100:

Sample proportion (p-hat) = 0.816 * 100 ≈ 81.6% (rounded to one decimal place)

Therefore, the sample proportion is approximately 81.6%.

b) To find the 90% confidence interval, we can use the formula for the confidence interval of a proportion. The formula is:

CI = p-hat ± z * sqrt((p-hat * (1 - p-hat)) / n)

Where:

p-hat is the sample proportion,

z is the z-score corresponding to the desired confidence level (90% in this case),

sqrt represents the square root,

and n is the sample size.

Since we want a 90% confidence interval, the z-score corresponding to a 90% confidence level is approximately 1.645.

Plugging in the values:

CI = 0.816 ± 1.645 * sqrt((0.816 * (1 - 0.816)) / 3005)

Calculating the expression inside the square root:

sqrt((0.816 * (1 - 0.816)) / 3005) ≈ 0.007

Plugging it back into the confidence interval formula:

CI = 0.816 ± 1.645 * 0.007

Calculating the product:

1.645 * 0.007 ≈ 0.011

Finally, the confidence interval is:

CI = 0.816 ± 0.011

Expressing it as percentages:

Lower bound = (0.816 - 0.011) * 100 ≈ 80.5%

Upper bound = (0.816 + 0.011) * 100 ≈ 82.7%

Therefore, the 90% confidence interval that estimates the percentage of adults aged 57 through 85 who use at least one prescribed medication is approximately 80.5% to 82.7%.

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Answer:

30 lamps

Step-by-step explanation:

30*2= 60

Answer:

\(\large \boxed{\mathrm{Option \ 4}}\)

Step-by-step explanation:

The area has to be found for the floor.

The whole rectangle = length × width = x × (x-4), has an area of x(x-4).

The area x(x-4) has to be subtracted from the area of the stage and closet.

Area of stage = area of triangle : base × height × 1/2

(x-4) × 8 × 1/2

(0.5) × (8) × (x-4)

Area of closet = area of rectangle : length × width

(3) × (7)

The area of the floor = x(x-4) - 0.5(8)(x-4) - 3(7)

Answer:

i don’t understand it either

Step-by-step explanation:

Answer:

16,849,464 ft³

Step-by-step explanation:

subtract the two volumes of the pyramids.

ответ на картинке !!!!

Answer:

A and D

Step-by-step explanation:

so sorry im in school

x+y=4

 -y.  -y

x=4-y

4-y-y=2

4-2y=2

-4      -4

-2y= -2

/-2.   /-2

y=1

x+1=4

  -1 -1

x=3

so A and D is correct

Answer:

Step-by-step explanation:

Figure it out yourself

The value for the functions (fg)(x) and (f/g)(x) are \(x^5 + 2x^4\) and \(\frac{x^4}{(x+2)}\) respectively.

What is a function?

In mathematics, a function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has exactly one output and the output can be linked to its input.

To find (fg)(x), we simply need to multiply the two functions f(x) and g(x) -

(fg)(x) = f(x) × g(x)

\(= x^4 \times (x+2)\)

\(= x^5 + 2x^4\)

Therefore, (fg)(x) = \(x^5 + 2x^4\).

To find (f/g)(x), we divide the function f(x) by the function g(x) -

(f/g)(x) = f(x) / g(x)

= \(\frac{x^4}{(x+2)}\)

We cannot simplify this expression any further, so this is our final answer for (f/g)(x).

Therefore, (f/g)(x) = \(\frac{x^4}{(x+2)}\).

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Answer:

68.26

Step-by-step explanation:

The symbol σ represents standard deviation. 1 standard deviation (in both directions) under a normal distribution= 68.26

Answer:

68%.

Step-by-step explanation:

The 68-95-99.7 rule (also know as the Empirical Rule) states that 68% of the data lies within 1 standard deviation of the mean. 95% of the data lies within 2 standard deviations of the mean. 99.7% of the data lies within 3 standard deviations of the mean.

According to the diagram, the area shaded shows data within 1 standard deviation of the mean (one standard deviation to the left, and one to the right). That means that 68% of the data is within the shaded area.

Hope this helps!