two lengths of stereo wire total 32.5 ft. one length is 2.9ft longer than the other. how long is each length of wire?

Answers

Answer 1
The length of the long one is half the total plus half the difference:
  (1/2)(32.5 +2.9) ft = 17.7 ft

The length of the short one is 2.9 ft less:
  17.7 ft -2.9 ft = 14.8 ft.

_____
If you like, you can write an equation for the length of the long wire (L).
  L +(L -2.9) = 32.5 . . . . . . . total length of both wires
  2L = 32.5 +2.9 . . . . . . . . . simplify, add 2.9
  L = (1/2)(32.5 +2.9) . . . . . looks a lot like the solution above.

Related Questions

Write the ratio of corresponding sides for the similar triangles and reduce the ratio to lowest terms

Answers

Final answer:

To find the ratio of corresponding sides for similar triangles, compare the lengths of the corresponding sides in both triangles. If the triangles are similar, these ratios will be equal. To simplify the ratio, divide each term by the greatest common factor.

Explanation:

In mathematics, to write the ratio of corresponding sides for similar triangles, you need to compare the lengths of the sides that have the same relative position. These corresponding sides are proportional in similar triangles. Let's consider a simple scenario where we have two similar triangles

A'B'C' and ABC.

The sides of A'B'C' are a', b', and c'.The sides of ABC are a, b, and c.

If these two triangles are similar, the ratio of their corresponding sides will be equal. Hence our ratios will look like this:

a'/a = b'/b = c'/c.

This is the ratio of corresponding sides for the similar triangles. To reduce the ratio to the lowest term, you simply divide each term by the greatest common factor of all the terms.

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Final answer:

To find the ratio of corresponding sides of similar triangles, identify the corresponding sides and write a ratio comparing the lengths of these sides. For example, if side AB in triangle ABC corresponds to side DE in triangle DEF with lengths 3 and 6 respectively, the ratio is 3/6 or 1/2 when reduced.

Explanation:

To write the ratio of corresponding sides for similar triangles, we must first identify which sides correspond in the two triangles. Usually, triangles are labeled so that corresponding sides have the same label (like "a", "b", etc.). Once you've identified which sides correspond, simply write a ratio comparing the length of one side in the first triangle to the length of the corresponding side in the second triangle. This could look something like a1/a2.

For example, if triangle ABC is similar to triangle DEF and side AB corresponds to DE with lengths 3 and 6, respectively, then the ratio of the corresponding sides is 3/6 or 1/2 in reduced form.

Understanding the ratio of corresponding sides is key to understanding the properties of similar triangles and can be extremely helpful in solving problems involving these figures not just in geometry, but in other branches of mathematics as well.

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Q #3. Graph the equation

Answers

Make sure that the line passes through -13 when it hits the y axis also make sure the line is going upwards, it is hard to explain, can you post the other questions?
For this case we have the following function:
 y = -13 + 3x
 We note that the cut point with the y axis is:
 (0, -13)
 The slope is given by:
 m = 3
 The slope is greater than zero, therefore the graph grows as the values of x increase.
 Answer:
 
See attached image

In virginia, each automobile license plate consists of a single digit followed by three letters, followed by three digits. how many distinct license plates can be formed if there are no restrictions on the digits or letters?

Answers

1,757,560,000

10*26*26*26*10*10*10

the 10's represent the numbers and the 26 represent the letters

The number of distinct license plates can be formed if there are no restrictions on the digits or letters is 175,760,000.

Given that, in Virginia, each automobile license plate consists of a single digit followed by three letters, followed by three digits.

What is the Permutations?

Permutations are different ways of arranging objects in a definite order. It can also be expressed as the rearrangement of items in a linear order of an already ordered set.

There are 26 letters A to Z in the alphabet. There are 10 digits 0 to 9

Assuming repetition allowed.

Now, 10×26×26×26×10×10×10

= 175,760,000

Hence, the number of distinct license plates can be formed if there are no restrictions on the digits or letters is 175,760,000.

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Suppose that the dollar cost of producing x radios is c(x) = 400 + 20x - 0.2x 2. Find the marginal cost when 30 radios are produced.

Answers

c(x) = 400 + 20x - 0.2x²

c(30) = 400 + 20(30) - 0.2(30)²

= 400 + 600 - 0.2(900)
= 1000 - 180
= 820

It costs $820 when 30 radios are produced. 

Marginal cost is how much it would cost to make one MORE of the same product so now we find how much it costs to produce 31 radios and compare the two. 

c(31) = 400 + 20(31) - 0.2(31)²

= 400 + 620 - 0.2(961)
= 1020 - 192.2
= 827.8 or ≈828.

Now we find the difference which means we subtract the two. 

828 - 820 = 8. 

Your marginal cost is $8

To compare we can also do 29 radios. 

c(29) = 400 + 20(29) - 0.2(29)² = 811.8 or ≈812

820 - 812 = 8. 
Final answer:

The marginal cost when 30 radios are produced is $8.

Explanation:

To find the marginal cost when 30 radios are produced, we need to differentiate the cost function with respect to x, which represents the number of radios produced. The cost function is given as c(x) = 400 + 20x - 0.2x^2. Differentiating c(x) with respect to x, we get c'(x) = 20 - 0.4x. Now, substitute x = 30 into c'(x) to find the marginal cost when 30 radios are produced. c'(30) = 20 - 0.4(30) = 20 - 12 = 8. Therefore, the marginal cost when 30 radios are produced is $8.

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The graph shows the function f(x).

Which value is closest to the average rate of change from x = 1 to x = 4?




A.−3.5

​ B.−2.3

​​ C. −1.4

​​D .−0.3

Answers

Answer:

Option B is correct

-2.3

Step-by-step explanation:

Average rate of change(A(x)) for the function f(x) over the interval [a, b] is given by:

[tex]A(x) = \frac{f(b)-f(a)}{b-a}[/tex]           ....[1]

We have to find the  average rate of change from x = 1 to x = 4.

From the graph as shown below

For x = 1

f(1) = 3

and

For x = 4

f(4) = -3.9

Using [1] we have;

[tex]A(x) = \frac{f(4)-f(1)}{4-1}[/tex]

Substitute the given values we have;

[tex]A(x) = \frac{-3.9-3}{3}[/tex]

⇒[tex]A(x) = \frac{-6.9}{3}[/tex]

Simplify:

[tex]A(x) = -2.3[/tex]

Therefore, -2.3  value is closest to the average rate of change from x = 1 to x = 4

Resting heart rate was measured for a group of subjects; the subjects then drank 6 ounces of coffee. ten minutes later their heart rates were measured again. the change in heart rate followed a normal distribution, with mean increase of 7.3 beats per minute and a standard deviation of 11.1 beats per minute. let latex: y y denote the change in heart rate for a randomly selected person. find latex: \text{p}(y<10)

Answers

 i cant understand because every thing is coplicated 2 thats it !!!!!!!!!!

Calculate the probability that the change in heart rate is less than 10 beats per minute using z-scores and the standard normal distribution table.

The probability (P) that the change in heart rate (y) is less than 10 beats per minute is calculated by finding the z-score for 10, then using the z-table or a calculator to find the corresponding probability.

First, calculate the z-score: z = (10 - 7.3) / 11.1 = 0.2432. Next, find the probability by looking up this z-score in the standard normal distribution table, which corresponds to approximately 59.93%.

Therefore, the probability that the change in heart rate is less than 10 beats per minute is approximately 59.93%.

Then find the area bounded by the two graphs of y=2x^2−24x+42 and y=7x−2x^2

Answers

To find the area under a curve, we integrate the function. To find the area bound between two curves, we integrate the difference of the functions. That is, we find:

[tex] \int\limits^a_b {(f(x)-g(x))} \, dx [/tex]

If you think about it, we are really doing this with all integration, only the second function is just y=0.

First, we need to figure out which function is on top. In this case we know that [tex]2x^2-24x+42[/tex] is a positive parabola while [tex]7x-2x^2[/tex] is negative, so the negative parabola will be on top. It is always a good idea to draw a rough sketch of the graphs because the curves could intercept multiple times, flipping which graph is on top at different intervals.

Next, we need to determine the bounds. These will be where the two graphs intercept, so we can just set them equal to each other and solve for x:

[tex]2x^2-24x+42=7x-2x^2[/tex]

Combine like terms:

[tex]4x^2-31x+42[/tex]

Now factor and find the zeros. We can use the quadratic formula:

[tex] \frac{31+ \sqrt{31^2-4(4)(42)} }{8} [/tex]

and

[tex] \frac{31- \sqrt{31^2-4(4)(42)} }{8} [/tex]

x = 1.75 and 6

[tex] \int\limits^6_{1.75} {((7x-2x^2)-(2x^2-24x+42))} \, dx [/tex]

[tex] \int\limits^6_{1.75} {(-4x^2+31x-42)} \, dx [/tex]

Solve:

[tex] \frac{-4x^3}{3} + \frac{31x^2}{2} - 42x [/tex]

Plug in bounds:

[tex]\frac{-4(6)^3}{3} + \frac{31(6)^2}{2} - 42(6)-(\frac{-4(1.75)^3}{3} + \frac{31(1.75)^2}{2} - 42(1.75))[/tex] = 51.17708





The mean of a curriculum committee is 34.8 years. A 15-year-old student representative is added to the committee. How does the student’s age affect the mean?

A.) The new mean age will be less than 34.8

B.) The new mean age will be greater than 34.8

C.) The new mean age will still be 34.8

D.) The new mean age will be 24.9

Answers

Since we don't know how many people are on the committee, we can only say ...
   A.) The new mean age will be less than 34.8

_____
Any new members whose age is less than the mean will reduce the mean. Any new members whose age is greater than the mean will increase the mean.

Answer:

The correct option is A. The new mean age will be less than 34.8  

Step-by-step explanation:

The mean of a curriculum committee is 34.8 years

Now, A 15-year-old student representative is added to the committee

Number of students in the curriculum committee is not known so if a student of 15 year age is added into the society we cannot find the exact new mean of the curriculum committee.

But, As the 15 is added to the sum of all observations but only 1 is added to the number of observations

So, The mean of the curriculum committee will obviously decrease

Since, Th mean of the curriculum committee is 34.8

Therefore, the new mean of the curriculum committee will be less than 34.8

Hence, The correct option is A. The new mean age will be less than 34.8

he radius of a circle is 2 kilometers. What is the area of a sector bounded by a 45° arc?

Answers

we know that
area of a circle=pi*r²
for r=2 km
area of a circle=pi*2²-----> 12.56 km²

if 360° (full circle) has an area of---------> 12.56 km²
 45°---------------------------------> x
x=45*12.56/360-----> x=1.57 km²

the answer is
1.57 km²

The area of a sector bounded by a 45° arc in a circle with a radius of 2 kilometers is π/² square kilometers.

To calculate the area of a sector bounded by a 45° arc in a circle with a radius of 2 kilometers, we will use the formula for the area of a sector, which is (θ/360) × π × r², where θ is the central angle in degrees and r is the radius of the circle. The central angle for our sector is 45° and the radius r is given as 2 km.

Plugging these values into the formula, we have:

Area of sector = (45/360) × π × (2²) = (1/8) × π × 4 = (1/2) × π = π/2 km².

Therefore, the area of the sector bounded by a 45° arc in a circle with a radius of 2 kilometers is π/²square kilometers.

A hospital needs a circular landing pad for their helicopter. The landing pad should be 5000 square feet. The contractor calculated that the pad would need to be about 40 feet across. Formulas Is the contractor correct? If not, what error did the contractor make?
Yes, the answer is correct.
No, he forgot to multiply by pi (3.14).
No, he forgot to multiply the radius by 2.
No, he used the formula for circumference.

Answers

we know that
area of a circle=pi*r²-------> r=√[area/pi]
for area=5000 ft²
r=√[5000/pi]----> r=39.90 ft
39.90*2-----> 79.8 ft of diameter
79.8 ft is > 40 ft

therefore
the answer is
No, he forgot to multiply the radius by 2.

Why is a/0 not defined?

Answers

For division operations that are defined, multiplication is the inverse operation. That is if
  a/b = c
then
  a = b*c

Division by 0 is undefined because it has no inverse operation. If
  a/0 = c
it is not true that
  a = 0*c

Final answer:

Division by zero is undefined because a/0 would imply an infinite value not included in the real numbers, and 0/0 is an indeterminate form lacking unique value, requiring advanced techniques in calculus for evaluation.

Explanation:

The concept of division by zero, specifically when discussing expressions like a/0 and 0/0, is a fundamental aspect of mathematics that leads to the undefined nature of these operations. In the case of 1/0, this division is not defined within the real number system, as a non-zero number divided by zero would imply an infinite value, which is outside the bounds of real numbers.

Conversely, the expression 0/0 is an example of an indeterminate form because it doesn't present enough information to deduce a unique value for the division, as zero divided by zero could represent any number.

Indeterminate forms such as these necessitate a more nuanced approach, particularly in calculus where the evaluation of limits often brings these expressions into play. In some contexts, sophisticated mathematical techniques must be employed to determine the behavior of functions as they approach these forms.

In science class, students are learning about organic compounds. An acetic acid molecule is made of 2 carbon atoms, 2 oxygen atoms and 4 hydrogen atoms. What is the ratio of carbon atoms and hydrogen atoms

Answers

Acetic acid, with the molecular formula C2H4O2, has a carbon to hydrogen atom ratio of 2:4, which simplifies to a 1:2 ratio.

The student's question pertains to the ratio of carbon atoms to hydrogen atoms in an acetic acid molecule. Acetic acid, which is also known as vinegar, has the molecular formula C2H4O2. The ratio of carbon to hydrogen atoms can be found by considering the number of carbon atoms and the number of hydrogen atoms in the formula. There are 2 carbon atoms and 4 hydrogen atoms, resulting in a 2:4 ratio. However, this ratio can be simplified by dividing both numbers by the greatest common divisor, which is 2. After simplifying, the ratio of carbon to hydrogen atoms becomes 1:2.

(3) (-4) + (3) (4) -1

Answers

(3)(-4) +(3)(4)-1 = -1
(3)(-4) + (3)(4) - 1
(-12) + (12) - 1
0 - 1
-1

Hope this helps.

Sam left his school at 3:05. He walked at a speed of 3.2 mph. 15 minutes later, Al started running after him, and he caught up with Sam 10 minutes later. What was Al’s speed? Answer:

Answers

Total time taken by Sam before Al caught up with him = 15+10 = 25 minutes

In hours = 25 minutes = 25/60 = 5/12 hrs
Distance covered by Sam = Distance covered by Al = Speed (Sam) * time taken = 3.2*5/12 = 4/3 miles.

Al takes 10 minutes to cover that distance. Therefore,
Al's speed = Distance/time = (4/3)/(10/60) = (4/3)*(60/10) = 8 mph

What were the total earnings of all five of these movies in the given week?

Movie
Earnings
Average Ticket Price
A
$26,088,808.74
$8.35
B
$60,394,938.12
$9.72
C
$23,659,617.52
$8.12
D
$34,311,887.98
$7.57
E
$10,505,611.08
$8.46

Answers

Answer:

$154,960,863.44

Step-by-step explanation:

Add the 5 earnings numbers using a suitable calculator.

_____

In this case, a "suitable calculator" is one that will display numbers of 11 digits or more. Apparently the one at the Google search box is up to the task.

The total earnings of all five movies in the given week were approximately $155,950,863.44.

To find the total earnings of all five movies in the given week, you can simply add up their individual earnings:

Total Earnings = Earnings of Movie A + Earnings of Movie B + Earnings of Movie C + Earnings of Movie D + Earnings of Movie E

Total Earnings = $26,088,808.74 + $60,394,938.12 + $23,659,617.52 + $34,311,887.98 + $10,505,611.08

Now, calculate the sum:

Total Earnings = $155,950,863.44

So, the total earnings of all five movies in the given week were approximately $155,950,863.44.

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Which figure has all sides of equal measure but not necessarily all angles of equal measure?

Answers

Rhombus,parallelogram.

The correct figure which has all sides of equal measure but not necessarily all angles of equal measure are ''Rhombus'' and ''parallelogram''.

What is mean by Rectangle?

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

Given that;

To find figure which has all sides of equal measure but not necessarily all angles of equal measure.

Now, We know that;

In a Parallelogram, A parallelogram is a quadrilateral with two pairs of parallel sides. The opposite sides of a parallelogram are equal in length.

And, In a Rhombus, A rhombus is a quadrilateral with both pairs of opposite sides parallel and all sides the same length,

Thus, The correct figure which has all sides of equal measure but not necessarily all angles of equal measure are Rhombus and parallelogram.

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Identify the type of conic section whose equation is given. x2 = y + 3

Answers

One term is a square and the other is degree 1. This is the equation of a PARABOLA.

Given: PSTR is a parallelogram m∠T:m∠R=1:3, RD ⊥ PS , RM ⊥ ST Find: m∠DRM

Answers

Answer:

m∠DRM = 45°

Step-by-step explanation:

∵ PSTR is a parallelogram

∴ TS // RP ⇒ opposite sides

∴ m∠T + m∠R = 180°(1) (interior supplementary angles)

∵ m∠T : m∠R = 1 : 3

∴ m∠R = 3 m∠T ⇒ (2)

- Substitute (2) in (1)

∴ m∠T + 3 m∠T = 180

∴ 4 m∠T = 180

∴ m∠T = 180 ÷ 4 = 45°

∴ m∠R = 3 × 45 = 135°

∵ m∠R = m∠S ⇒ opposite angles in a parallelogram

∴ m∠S = 135°

∵ RD PS

∴ m∠RDS = 90°

∵ RM ST

∴ m∠RMS = 90°

- In quadrilateral RMSD

∵ m∠S = 135°

∵ m∠RDS = 90°

∵ m∠RMS = 90°

∵ The sum of measure of the angles of RMSD = 360°

∴ m∠DRM = 360 - ( 135 + 90 + 90) = 45°

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PLEEEEEEEEEEEEEEAAAAAASSSSSSSSSSSSSEEEEEEEEEEEEEEEEE HELP!!!
The figure below is an oblique triangular prism. The expression below represents the volume of the figure written in standard form.
What are the missing values? axb + cx a = b = c =

Answers

A.1
B.3
C.3

Just did this assignment.
Hi there!

the answers are:
1.   1

2.   3

3.   3
Have a great day! hope I helped!
p.s: just completed this assignment, so I know these are 100% correct.

Suppose a city has 810 high-rise buildings, and 29 of these buildings have rooftop gardens. Find the percentage of high-rise buildings with rooftop gardens in this city. Round your answer to the nearest tenth of a percent.

Answers

For this case we can make the following rule of three:
 810 ---------> 100%
 29 -----------> x
 From here, we clear the value of x.
 We have then:
 x = (29/810) * (100)
 x = 3.580246914%
 Round to the nearest tenth of a percent:
 x = 3.6%
 Answer:
 
The percentage of high-rise buildings with rooftop gardens in this city is:
 
x = 3.6%

To find the percentage of high-rise buildings with rooftop gardens, divide the number of buildings with gardens (29) by the total number of buildings (810), and then multiply by 100. Round the final result to the nearest tenth, which is approximately 3.6%.

To calculate the percentage of high-rise buildings with rooftop gardens, we use the formula:

Percentage = (Part / Whole)  imes 100

Where the Part is the number of buildings with rooftop gardens, and the Whole is the total number of high-rise buildings.

Substituting the given values:

Percentage = (29 / 810) times 100

Carrying out the division first gives us:

Percentage ≈ 0.035802469 times 100

Finally, multiplying by 100 to find the percentage, we get:

Percentage ≈ 3.58

After rounding to the nearest tenth of a percent, we obtain:

Percentage ≈ 3.6%

3.6% of the high-rise buildings in the city have rooftop gardens.

Figure BMHF is rotated how many degrees clockwise?

Answers

MH was horizontal. M'H' is vertical.
  The figure is rotated 90° clockwise.
90 degrees clockwise is the answer

The center is (4,5) and a point on the circle is (0,8)

Answers

The equation of a circle is (x - h)² + (y - k)² = radius² where (h, k) is the the center. So we plug in our given information.

(x - 4)² + (y - 5)² = radius². To find the radius, we do the distance formula from the center of the circle to the point on the circle itself. 

Distance formula is:

Distance = √((Y2 - Y1)² + (X2 - X1)²). Again, plug in given information. 

√((8 - 5)² + (0 - 4)²)
√((3)² + (- 4)²)
√(9 + 16)
√25 = 5

Your radius is 5. 

So now we complete the equation:

(x - 4)² + (y - 5)² = 5²

Your final answer:

(x - 4)² + (y - 5)² = 25

A rectangular room measures 12 ft by 17 fr.Find the cost of installing a wall paper border around the room if the border costs $0.64 cents per foot

Answers

To find the price, we need to find the perimeter of the room:
2(12) + 2(17) = 24 + 34
The perimeter is 54
54*0.64 = 34.56
It will cost $34.56

A tangent- tangent intercept two arcs that measure 145 degrees and 211 degrees what is the measure of the length of the tangent-tangent angle?

Answers

check the picture below.

The answer to this question is A: 31



Hannah made 0.7 of her free throws in a basketball game. Abra made 9/10 of her free throws. Dena made 3/4 of her free throws.Who was the best shooter? explain

Answers

Abra is the best.. 9/10=90%
Hannah is .7=70%
Dena is 3/4=75%
Abra has the greatest percentage! Hope it helps!!

Abra made 9/10 of her free throws which are equal to 90%, so Abra is the best shooter.

What is the percentage?

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100.

Hannah made 0.7 of her free throws in a basketball game.

[tex]\rm = 0.7 \times 100\\\\=70 \ percent[/tex]

Hannah made 0.7 of her free throws in a basketball game which is equal to 70%.

Abra made 9/10 of her free throws.

[tex]\rm =\dfrac{9}{10}\times 100\\\\= 9\times 10\\\\=90 \ percent[/tex]

Abra made 9/10 of her free throws which are equal to 90%.

Dena made 3/4 of her free throws.

[tex]\rm =\dfrac{3}{4} \times 100\\\\=3\times 25\\\\=75 \ percent[/tex]

Dena made 3/4 of her free throws which are equal to 75%.

Hence, Abra made 9/10 of her free throws which are equal to 90%, so Abra is the best shooter.

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the two figures are congruent find the measure of the requested side or angle

Answers

The length of AB is approximately 14.68 which is option B. 15.

To find the length of side AB in the congruent figures where AC is 6, angle C is 119 degrees, AB is 15, angle B is 22 degrees, and BC is 12, we can use the Law of Cosines.

The Law of Cosines states:

[tex]\[ c^2 = a^2 + b^2 - 2ab \cos(C) \][/tex]

where:

- c is the side opposite the angle C,

- a and b are the other two sides,

- c is the angle opposite side c.

In this case, we have AC as side a, BC as side b, and AB as side c. We also know that angle C is 119 degrees.

[tex]\[ AB^2 = AC^2 + BC^2 - 2 \cdot AC \cdot BC \cdot \cos(C) \][/tex]

Substitute the given values:

[tex]\[ AB^2 = 6^2 + 12^2 - 2 \cdot 6 \cdot 12 \cdot \cos(119^\circ) \][/tex]

Now, calculate the expression to find the length of AB.

[tex]\[ AB^2 = 36 + 144 - 2 \cdot 6 \cdot 12 \cdot \left(\cos(119^\circ)\right) \]\\AB^2 = 36 + 144 - 2 \cdot 6 \cdot 12 \cdot \left(-0.492403\right) \]\\AB^2 = 36 + 144 + 35.4234 \]\\AB^2 = 215.4234 \][/tex]

Now, take the square root of both sides to find AB:

[tex]\[ AB = \sqrt{215.4234} \approx 14.68 \][/tex]

So, the length of AB is approximately 14.68.

One month Mai rented
6 movies and 2 video games for a total of
$36. The next month she rented 3
movies and 5 video games for a total of $39. Find the rental cost for each movie and each video game.

Answers

The first thing we must do for this case is to define variables:
 x = rental cost of movies
 y = rental cost of video games
 We write the system of equations:
 6x + 2y = 36
 3x + 5y = 39
 Resolving we have:
 x = 4.25 $
 y = 5.25 $
 Answer:
 
The rental cost for each movie and each video game is:
 
movies = 4.25 $
 
video games = 5.25 $

Which polynomial function has a leading coefficient of 1, roots –3 and 8 with multiplicity 1, and root 4 with multiplicity 2?

f(x) = 2(x + 3)(x + 4)(x – 3)
f(x) = 2(x – 8)(x – 4)(x + 3)
f(x) = (x + 8)(x + 4)(x + 4)(x – 3)
f(x) = (x – 8)(x – 4)(x – 4)(x + 3)

Answers

f(x) = (x-8)(x-4)(x-4)(x+3)

Answer:

f(x) = (x – 8)(x – 4)(x – 4)(x + 3)

Step-by-step explanation:

A polynomial function with roots [tex]x_{1}, x_{2}, ..., x_{n}[/tex] has the following format:

[tex]f(x) = a(x - x_{1})(x - x_{2})...(x - x_{n})[/tex]

In which a is the leading coefficient.

In this problem, we have that:

Leading coefficient 1, so [tex]a = 1[/tex]

roots -3 and 8 with multiplicity 1, so [tex](x + 3)(x - 8)[/tex].

root 4 with multiplicity 2, so [tex](x - 4)^{2} = (x - 4)(x - 4)[/tex]

So the correct answer is:

f(x) = (x – 8)(x – 4)(x – 4)(x + 3)

Which side of XYZ is the longest ?? Please Help

Answers

A.yx
due to it having the largest angle.

Answer:

XY is the longest side in the given ΔXYZ.

Step-by-step explanation:

We are given the following information in the question:

We have to find the longest side in the given triangle ΔXYZ.

The three angles of the triangle are:

[tex]\angle X = 62^\circ\\\angle Y = 55^\circ\\\angle Z = 63^\circ\\[/tex]

We know that in a triangle the side opposite to smallest triangle is smallest and the side opposite to largest angle is longest in length.

Angle Z in the given triangle is the largest angle and therefore, the side opposite to this angle is the longest side of the triangle.

Hence, XY is the longest side in the given ΔXYZ.

Use part 1 of the fundamental theorem of calculus to find the derivative of the function. y = 5 u3 1 + u2 du 4 − 3x

Answers

Looks like

[tex]y(x)=\displaystyle\int_5^{4-3x}u^3(1+u^2)\,\mathrm du[/tex]

in which case the FTC asserts that

[tex]\dfrac{\mathrm dy}{\mathrm dx}=(4-3x)^3(1+(4-3x)^2)\cdot\dfrac{\mathrm d(4-3x)}{\mathrm dx}[/tex]

[tex]\dfrac{\mathrm dy}{\mathrm dx}=-3(4-3x)^3(1+(4-3x)^2)[/tex]

Using part 1 of the fundamental theorem of calculus to find the derivative of the function. The derivative of the given function is:

[tex]\mathbf{\dfrac{dy}{dx} =3\Big (\dfrac{(4-3x)^3}{1+(4-3x)^2}\ \Big) \ }[/tex]

Consider the given function:

[tex]\mathbf{y = \int^5_{4-3x} \ \dfrac{u^3}{1+u^2}\ du}[/tex]

The objective is to find  [tex]\mathbf{\dfrac{dy}{dx}}[/tex]  by using the fundamental theorem of calculus.

Suppose v = 4 - 3x; Then dv = -3dx[tex]\mathbf{\dfrac{dv}{dx}= -3}[/tex]  

Using chain rule:

[tex]\mathbf{\dfrac{dy}{dx} = \dfrac{dy}{dv}\times \dfrac{dv}{dx}}[/tex]

[tex]\mathbf{ =\dfrac{d}{dv}\Big (\int^5_{4-3x} \dfrac{u^3}{1+u^2}\ du\Big) \dfrac{dv}{dx}}}[/tex]

[tex]\mathbf{ =\dfrac{d}{dv}\Big (\int^5_{v} \dfrac{u^3}{1+u^2}\ du\Big) \dfrac{dv}{dx} \ \ \ \ \ since \ v \ = 4 - 3x} }[/tex]

[tex]\mathbf{ =-\dfrac{d}{dv}\Big (\int^v_{5} \dfrac{u^3}{1+u^2}\ du\Big) \dfrac{dv}{dx} }[/tex]

[tex]\mathbf{ =-\dfrac{d}{dv}\Big (\int^v_{5} \dfrac{u^3}{1+u^2}\ du\Big) \ (-3)}[/tex]

[tex]\mathbf{ =3\dfrac{d}{dv}\Big (\int^v_{5} \dfrac{u^3}{1+u^2}\ du\Big) \ }[/tex]

From the fundamental theorem of calculus;

 [tex]\mathbf{\dfrac{d}{dx} \Big( \int^x_1 \ g(t) dt \Big) = g(x)}[/tex]

[tex]\mathbf{ =3\dfrac{d}{dv}\Big (\int^v_{5} \dfrac{u^3}{1+u^2}\ du\Big) \ }[/tex] will be:

[tex]\mathbf{ =3\times \Big (\dfrac{(4-3x)^3}{1+(4-3x)^2}\ \Big) \ }[/tex]

[tex]\mathbf{\dfrac{dy}{dx} =3\Big (\dfrac{(4-3x)^3}{1+(4-3x)^2}\ \Big) \ }[/tex]

Therefore, we can conclude that the derivative of [tex]\mathbf{y = \int^5_{4-3x} \ \dfrac{u^3}{1+u^2}\ du}[/tex]

using the fundamental theorem of calculus is   [tex]\mathbf{\dfrac{dy}{dx} =3\Big (\dfrac{(4-3x)^3}{1+(4-3x)^2}\ \Big) \ }[/tex]

Learn more about fundamental derivatives here:

https://brainly.com/question/9964510?referrer=searchResults

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