Find the interval in which the following quadratic is decreasing.

Find The Interval In Which The Following Quadratic Is Decreasing.

Answers

Answer 1

The quadratic is decreasing in the interval in which the y values decrease with the increase in x values.

In the interval, (-∞, 0), the y values decrease with increase in x values.

Hence, the quadratic is decreasing in the interval (-∞, 0),


Related Questions

cos(alpha + beta) = cos^2 alpha - sin^2 beta

Answers

The trigonometric identity cos(α + β)cos(α - β) = cos²(α) - sin²(β) is verified in this answer.

Verifying the trigonometric identity

The identity is defined as follows:

cos(α + β)cos(α - β) = cos²(α) - sin²(β)

The cosine of the sum and the cosine of the subtraction identities are given as follows:

cos(α + β) = cos(α)cos(β) - sin(α)sin(β).cos(α - β) = cos(α)cos(β) + sin(α)sin(β).

Hence, the multiplication of these measures is given as follows:

cos(α + β)cos(α - β) = (cos(α)cos(β) - sin(α)sin(β))(cos(α)cos(β) + sin(α)sin(β))

Applying the subtraction of perfect squares, it is found that:

(cos(α)cos(β) - sin(α)sin(β))(cos(α)cos(β) + sin(α)sin(β)) = cos²(α)cos²(β) - sin²(α)sin²(β)

Then another identity is applied, as follows:

sin²(β) + cos²(β) = 1 -> cos²(β) = 1 - sin²(β).sin²(α) + cos²(α) = 1 -> sin²(α) = 1 - cos²(a).

Then the expression is:

cos²(α)cos²(β) - sin²(α)sin²(β) = cos²(α)(1 - sin²(β)) - (1 - cos²(a))sin²(β)

Applying the distributive property, the simplified expression is:

cos²(α) - sin²(β)

Which proves the identity.

Missing information

The complete identity is:

cos(α + β)cos(α - β) = cos²(α) - sin²(β)

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Sarkis OganesyanCombine Like Terms (Basic, Decimals)May 20, 11:02:29 AMA triangle has side lengths of (1.1p + 9.59) centimeters, (4.5p - 5.2r)centimeters, and (5.3r + 5.4q) centimeters. Which expression represents theperimeter, in centimeters, of the triangle?14.89 + 5.6p + 0.2rO 0.1r + 5.6p + 14.99Submit Answer-0.7pr + 10.7qr + 10.6pq9.7qr + 10.9pr

Answers

The sides of the triagle have lengths:

1.1 p + 9.5 q

4.5 p - 5.2 r

5.3 r + 5.4 q

Or:

1.1 p + 0 r + 9.5 q

4.5 p - 5.2 r + 0 q

0 p + 5.3 r + 5.4 q

If we want to calculate the perimeter of the triangle, we just need to sum the three lenghts:

(1.1 + 4.5) p + (-5.2 + 5.3) r + (9.5 + 5.4) q

= 5.6 p + 0.1 r + 14.9 q

INT ALGEBRAL: 1. Write an equation that passes through (0,5) and is parallel to 3x+5y=6

Thank you for your help, and please do show work! I will be looking to give the Brainliest answer to someone!

Answers

The equation of the parallel line is y = -3/5x + 5

How to determine the line equation?

The equation is given as

3x + 5y = 6

The point is also given as

Point = (0, 5)

The equation of a line can be represented as

y = mx + c

Where

Slope = m and c represents the y-intercept

So, we have

3x + 5y = 6

This gives

5y = -3x + 6

Divide

y = -3/5x + 6/5

By comparing the equations y = mx + c and y = -3/5x + 6/5, we have the following

m = -3/5

This means that the slope of y = -3/5x + 6/5 is -3/5

So, we have

m = -3/5

The slopes of parallel lines are equal

This means that the slope of the other line is -3/5

The equation of the parallel line is then calculated as

y = m(x - x₁) +y₁

Where

m = -3/5

(x₁, y₁) = (0, 5)

So, we have

y = -3/5(x + 0) + 5

Open the brackets and evaluate

y = -3/5x + 5

Hence, the parallel line has an equation of y = -3/5x + 5

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A right triangle is shown in the graph.

right triangle on coordinate plane with hypotenuse labeled t and one endpoint of hypotenuse at r comma s and the other endpoint at x comma y, vertical line from point x comma y and horizontal line from r comma s that meet at right angle of triangle, horizontal dotted line from point r comma s to point s on y axis, horizontal dotted line from point x comma y to point y on y axis, vertical dotted line from point r comma s to point r on x axis, and vertical dotted line from right angle to point x on x axis


Part A: Use the Pythagorean Theorem to derive the standard equation of the circle with center at (r, s) and a point on the circle at (x, y). Show all necessary math work. (3 points)

Part B: If (r, s) = (7, –4) and t = 10, determine the domain and range of the circle. (4 points)

Part C: Is the point (9, 1) inside the border of the circle if (r, s) = (7, –4) and t = 10? Explain using mathematical evidence. (3 points

Answers

Part a: The standard equation of circle: (x - r)² + (y - s)² = t².

Part b: Domain = {17, -3} and Range = {-14, 6}.

Part c: Point (9, 1) lies inside the circle.

What is termed as the Pythagorean Theorem?The Pythagorean theorem, or Pythagorean theorem, explains the relation between the three sides of such a right-angled triangle. The the hypotenuse's square is equal to the total of the squares of the remaining two sides of a triangle, according to Pythagoras' theorem.

For the given question,

The right triangle are given with two of ts vertices as (r, s) and (x, y).

The distance between these two points is 't'.

Part a: The standard equation of the circle.

Centre of circle = (r,s) and

Point on the circle = (x, y)

Using Pythagorean Theorem,

(x - r)² + (y - s)² = t²

Thus, the standard equation of the circle is (x - r)² + (y - s)² = t²

Where, t is the radius of the circle.

Part b: Domain and range.

(r, s) = (7, –4) and t = 10,

For x values in the domain  r ± t and y values in the range s ± t, the circle would be defined.

Domain = 7 ± 10 = {17, -3}

Range = -4 ± 10 = {-14, 6}

Part c: Point (9, 1) lies inside or not.

(r, s) = (7, –4) and t = 10

Point (9, 1) = (x, y)

Put the values;

(x - r)² + (y - s)² ≤ t²

(9 - 7)² + (1 + 4)² ≤ 10²

2² + 5² ≤ 10²

4 + 25 ≤ 100

29 ≤ 100

Thus, the points (9, 1) lies inside the circle.

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A straight line l1 with equation 5x - 7 = 0 cuts the x axis at point A. Straight line l2 is perpendicular to straight line l1 and passes through point A. What is the coordinates of point A and the equation of the straight line l2?

Answers

The coordinates of point A are (7/5, 0), and the perpendicular line that also passes through that point is:

y = 0.

How to get the perpendicular line?

Here we want to get a line perpendicular to:

5x - 7 = 0

Solving this for x, we get:

5x = 7

x = 7/5.

This is a vertical line, so the perpendicular line will be a horizontal line, which is of the form:

y = a.

We know that the line:

x = 7/5.

Cuts the x-axis at point A.

Remember that the x-axis as coordinates (x, 0).

So the coordinates of point A are (7/5, 0).

Now, the perpendicular line:

y = a

Needs to pass through the point (7/5, 0), so the value of a must be zero, then the line is:

y = 0.

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In windy cold weather, the increased rate of heat loss makes the temperature feel colder than the actual temperature. To describe an equivalent temperature that more closely matches how it “feels,” weather reports often give a windchill index, WCI. The WCI is a function of both the temperature F(in degrees Fahrenheit) and the wind speed v (in miles per hour). For wind speeds v between 4 and 45 miles per hour, the WCI is given by the formula(FORMULA SHOWN IN PHOTO)A) What is the WCI for a temperature of 10 F in a wind of 20 miles per hour?B) A weather forecaster claims that a wind of 36 miles per hour has resulted in a WCI of -50 F. What is the actual temperature to the nearest degree?

Answers

Let's remember what the variables mean:

F= temperature (in Fahrenheit),

v= wind speed.

A) The formula "works" when the wind speed is between 4 and 45 miles per hour. The question asks for a wind speed of 20 miles per hour. Then, we can apply the formula. Here,

[tex]\begin{cases}F=10 \\ v=20\end{cases}[/tex]

Then,

[tex]\begin{gathered} WCI(10,20)=91.4-\frac{(10.45+6.69\cdot\sqrt[]{20}-0.447\cdot20)(91.4-10)}{22}\approx\ldots \\ \ldots91.4-116.2857=-24.8857 \end{gathered}[/tex]

Approximating, the answer is

[tex]-25F[/tex]

B) This question is just about to find F in the provided equation after replacing the given v and WCI. Let's do that:

[tex]\begin{gathered} -50=91.4-\frac{(10.45+6.69\cdot\sqrt[]{36}-0.447\cdot36)(91.4-F)}{22}, \\ -141.4=-\frac{(10.45+6.69\cdot\sqrt[]{36}-0.447\cdot36)(91.4-F)}{22}, \\ -3110.8=-(10.45+6.69\cdot\sqrt[]{36}-0.447\cdot36)(91.4-F), \\ 3110.8=(10.45+6.69\cdot\sqrt[]{36}-0.447\cdot36)(91.4-F), \\ \frac{3110.8}{10.45+6.69\cdot\sqrt[]{36}-0.447\cdot36}=91.4-F, \\ F=91.4-\frac{3110.8}{10.45+6.69\cdot\sqrt[]{36}-0.447\cdot36}\approx1.2 \end{gathered}[/tex]

Then, the actual temperature is

[tex]1F[/tex]

help meeeeeeeeee pleaseee !!!!!

Answers

The function 2x + 3x^2 represents the result of adding the two provided functions, f(x) and g(x).

Composite performance.

An operation known as "function composition" takes two functions, f and g, and produces a new function, h, that is equal to both g and f and has the property that h(x) = g.

Given the f(x) = 2x and g(x) = 3x^2 functions

The sum of the two functions must be calculated as illustrated;

f(x) + g = (f+g)(x)

Put the provided functions in place of (f+g)(x) to have:

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

Standard version of the expression is (f+g)(x) = 2x + 3x^2

Consequently, the sum of the functions f(x) and g(x) is2x + 3x^2

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differentiate t^4 In(8cost)

Answers

⇒It is way more appropriate if I use the product rule. That states that:

⇒f(x)g(x)=f'(x)g(x)+f(x)g'(x)

[tex]t^{4} In(8cos(t))\\=4t^{3}In(8cos(t))+t^{4} \frac{1}{8cos(t)} *(0cos(t)+8*(-sin(t))*1)\\=4t^{3}In(8cos(t))+\frac{t^{4}-8sin(t)}{8cos(t)}[/tex]

Note:

Given F(x)=In(x)

⇒[tex]F'(x)=\frac{1}{x}[/tex]

Goodluck

Answer:

t^3 (4 ln(cos8t) - t tant)

Step-by-step explanation:

Using the Product Rule:

dy/dt = t^4 * d(ln(8cost) / dt + ln(8cost) * d(t^4)/dt

         = t^4 * 1/ (8cost) * (-8sint) + 4t^3 ln(8cost)

         = -8t^4 sint / 8 cost + 4t^3 ln(8cost)    

         = -t^4 tan t + 4t^3 ln(8cost)  

          = t^3 (4 ln(cos8t) - t tant)

need help asap look at attachment

Answers

Answer: Width =14, Length = 18

Step-by-step explanation:

L = W + 4

2W + 2L = 64

W+ L = 32

2W+ 4 = 32

2W = 28

W = 14

The with is 14 and length 18

2) Katie and Jacob are enlarging pictures in a school yearbook on the copy machine. The ratio of the width to the length of the enlarged photo will be the same as the ratio of the width to the length of the original photo. 25 points One of the photographs that they want to enlarge is a 3" x 4"photo. katie says that she can enlarge the photo to a 9" x 12", but Jacob disagrees. He says it will be 11" x 12". Who is correct? Explain your reasoning in words. * Enlarged Photo Original Photo 3 inches 4 inches

Answers

The original picture Katie and Jacob want to enlarge is 3 by 4 photographs

This means that the initial length of the photograph is 3 and the intial width of the photographs is 4

If both of them want to enlarge the photograph, then the scaling factor must be the same for both the width and length

Katie enlarge the photo to a 9 x 12

The ratio of the original photograph is 3 to 4

That is, 3 : 4

Katie enlarge the photo to a 9 x 12

Ratio of the enlarged photo by katie is 9 to 12

That is, 9 : 12

Equate the two ratio together

3/4 = 9/12

Introduce cross multiplication

We have,

3 x 12 = 4 x 9

36 = 36

Therefore, the ratio which katie enlarged the photo results to a proportion

For Jacob

Jacob enlarged the photo to 11 x 12

Equating the two ratios

3/4 = 11/12

3 x 12 = 4 x 11

36 = 44

This does not give us a proportion

Therefore, Katie is correct while Jacob is wrong

Hello, can you please help me solve this question ASAP!!!

Answers

SOLUTION:

Step 1:

In this question, we have that:

Step 2:

Part A:

We are meant to show that the equation:

[tex]5sinx=1+2cos^2x[/tex]

can be written in the form

[tex]2sin^2\text{x + 5 sin x - 3=0}[/tex]

Proof:

[tex]\begin{gathered} \text{5 sin x = 1 + 2 cos }^2x\text{ } \\ \text{But cos}^2x+sin^2x\text{ = 1} \\ \text{Then,} \\ \cos ^2x=1-sin^2x\text{ } \\ \text{Hence,} \\ 5sinx=1+2(1-sin^2x_{}) \\ 5sinx=1+2-2sin^2x \\ 5sinx=3-2sin^2x \end{gathered}[/tex]

Re-arranging, we have that:

[tex]2sin^2x\text{ + 5 sin x - 3 = 0 }[/tex]

Part B:

b) Hence, solve for x in the interval:

[tex]0\text{ }\leq\text{ x }\leq\text{ 2}\pi[/tex]

What is the remainder when 5x3 + 2x2 - 7 is divided by x + 9?-93,7503,800-3,490

Answers

Explanation

Given the expression

[tex]5x^3+2x^2-7[/tex]

The remainder when it is divided by x+9 can be seen below;

[tex]r=5(-9)^3+2(-9)^2-7=-3645+162-7=-3490[/tex]

Answer: -3490

Instructions: Fill in the table of values for the exponential function. Insert all answers as fractions, when applicable.

Answers

Given,

The expression is:

[tex]y=-2(\frac{1}{2})^x[/tex]

Required:

The value of y at x = -2, -1, 0, 1, 2.

The value of y at x = -2.

[tex]y=-2(\frac{1}{2})^{-2}=-2\times(2)^2=-2\times4=-8[/tex]

The value of y at x = -1.

[tex]y=-2(\frac{1}{2})^{-1}=-2\times(2)^1=-2\times2=-4[/tex]

The value of y at x = 0.

[tex]y=-2(\frac{1}{2})^0=-2\times(2)^0=-2\times1=-2[/tex]

The value of y at x = 1.

[tex]y=-2(\frac{1}{2})^1=-2\times\frac{1}{2}=-1[/tex]

The value of y at x = 2.

[tex]y=-2(\frac{1}{2})^2=-2\times\frac{1}{4}=-\frac{1}{2}=-0.5[/tex]

The table for the different value of the function:

x y

-2

7+[9÷(9x1 to the second power)]

Answers

The value of the expression 7+[9÷(9x1 to the second power)] is 64/9

What is a fraction?

A fraction can be described as the part of a whole set or element.

There are several types of fractions, which includes;

Simple fractionsComplex fractionsMixed fractionsProper fractionsImproper fractions

Some examples of these fractions are given as;

Simple fractions: 1/5, 1/6

Mixed fractions: 2 1/8, 3 1/4

Proper fractions: 2/3, 4/5

Improper fractions; 4/1, 6/3

Given the expression;

7+[9÷(9x1 to the second power)]

This is expressed as;

7 + ( 9 ÷ (9)^2

Find the square

7 + ( 9 ÷ 81)

find the ratio

7 + 1/9

Find the common multiple

63 + 1 /9

64/9

Hence, the value is 64/9

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Rewrite the following equation in slope-intercept form. x - 7y = 20 Write your answer using integers, proper fractions, and improper fractions in simplest form.

Answers

In this case, we'll have to carry out several steps to find the solution.

Step 01:

x - 7y = 20

slope-intercept form = ?

Step 02:

Slope-intercept form of the line

y = mx + b

x - 7y = 20

x = 20 + 7y

x - 20 = 7y

7y = x - 20

[tex]y\text{ = }\frac{x}{7}\text{ - }\frac{20}{7}[/tex]

The answer is:

y = x/7 - 20/7

find the volume or missing value 3ft, 2.5ft, 6ft

Answers

The formula to find the volume of a rectangular prism is

[tex]\begin{gathered} V=l\cdot w\cdot h \\ \text{ Where V is the volume}, \\ l\text{ is the length,} \\ w\text{ is the width and} \\ \text{h is the height of the rectangular prism} \end{gathered}[/tex]

Graphically,

So, in this case, you have

[tex]\begin{gathered} l=3ft \\ w=2.5ft \\ h=6ft \\ V=l\cdot w\cdot h \\ V=3ft\cdot2.5ft\cdot6ft \\ V=45ft^3 \end{gathered}[/tex]

Therefore, the volume of the rectangular prism is 45 cubic feet.

Sally started on the 12th floor. She walked up 4 flights. Then she went down 2 flights. Then she ran up 8 flights of stairs. a) Write an ADDITION expression b) What floor did she end up on? SHOW ALL WORK!

Answers

1) Gathering the data

Initial point 12th floor

2) She started on 12th floor and walked up 4 flights of stairs, assuming from each floor to another we have just 1 flight of stair. And we're using an addition expression, Hence, we can say:

12 +4-2+8=

16 +6

22

She ended up on the 22th floor

I’ve already done this problem, but I’m being told it’s wrong and I need to simplify but I don’t know how to do it with this question.

Answers

[tex]\begin{gathered} y=x^2-3 \\ For\text{ (1,2)} \\ x=1,\text{ y=2} \\ y=1^2-3 \\ y=1-3 \\ y=-2,\text{ -2}\ne2,\text{ hence} \\ \text{ this pair doesnt satisfy the equation }y=x^2-3 \\ \text{For (}4,13\text{)} \\ x=4,y=13 \\ y=4^2-3 \\ y=16-3 \\ y=13,\text{ 13=13, hence} \\ \text{This pair satisfies the equation }y=x^2-3 \\ \text{for (}-3,-9\text{)} \\ x=-3,\text{ y=-9} \\ y=(-3)^2-3 \\ y=9-3 \\ y=6,\text{ -9}\ne6,\text{ hence} \\ \text{ this pair doesnt satisfy the equation }y=x^2-3 \\ \text{For (}-5,22\text{)} \\ x=-5,\text{ y=22} \\ y=(-5)^2-3 \\ y=25-3 \\ y=22,\text{ 22=22, hence} \\ \text{This pair satisfies the equation }y=x^2-3 \end{gathered}[/tex]

Linear Programming WorksheetGraph each feasible region. maximize or minimize each objective

Answers

Given:

x+2y = 8

x=2, y=0

Substitute x=2 then find value of x as,

2+2y=8

2y=6

y=3

(x,y) = (0,3)

Now, substitute y=0 then find value of y as,

x+2(0)=8

x=8

(x,y) = (8,0)

It is given that P = x+3y

(x,y) = (0,3) then P= 0+3x3

P=9

The maximum valu P=9 and vertiex (0,3)

(x,y) = (8,0) then P=8+0= 8

The mininmum val

Please help me my answer is correct or no

Answers

Answer:

the answer is c actully

Step-by-step explanation:

iv'e took that test b4 so you welcome

Solve for x using the quadratic formula.3x^2 +10x+8=3

Answers

The quadartic equation is 3x^2+10x+8=3.

Simplify the quadratic equation to obtain the equation in standard form ax^2+bx+c=0.

[tex]\begin{gathered} 3x^2+10x+8=3 \\ 3x^2+10x+5=0 \end{gathered}[/tex]

The coefficent of x^2 is a=3, coefficient of x is b=10 and constant term is c=5.

The quadartic formula for the values of x is,

[tex]x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}[/tex]

Substitute the values in the formula to obtain the value of x.

[tex]\begin{gathered} x=\frac{-10\pm\sqrt[]{(10)^2-4\cdot3\cdot5}}{2\cdot3} \\ =\frac{-10\pm\sqrt[]{100-60}}{6} \\ =\frac{-10\pm\sqrt[]{40}}{6} \\ =\frac{-10\pm2\sqrt[]{10}}{6} \\ =\frac{-5\pm\sqrt[]{10}}{3} \end{gathered}[/tex]

The value of x is,

[tex]\frac{-5\pm\sqrt[]{10}}{3}[/tex]

Li’s family is saving money for their summer vacation. Their vacation savings account currently has a balance of $2,764. The family would like to have at least $5,000.Which inequality can be used to determine the amount of money the family still needs to save?

Answers

EXPLANATION

Savings account balance = $2,764

Desired amount = $5,000

Let's call x to the amount of money the family needs.

The inequality that could be used to determine the amount of money the family needs is the following:

2,764 + x ≥ 5,000

top question says: Triangle ABC can be taken to triangle A'B'C' using rigid motions and a dilation. help me pls

Answers

If triangle ABC can be taken to triangle A'B'C', it means that they are similar triangles. If tow triangles are similar, it means that the ratio of their corresponding sides are equal. Thus, we have

A'B'/AB = B'C'/BC = A'C'/AC

Thus, looking at the options, the true equations are

A) A'C'/B'A' = AC/BA

D) CA/C'A' = CB/C'B'

E) A'B'/AB = C'B'/CB

If we look at these options the ratios are always the same

Suppose you want to have $ 749,791 for retirement in 13 years. Your account earns 9.5 % interest monthly. How much interest will you earn?$_________ (Round to the nearest DOLLAR)

Answers

ANSWER

$530,663

EXPLANATION

The amount the account will have in t years is given by,

[tex]A=P(1+\frac{r}{n})^{nt}[/tex]

Where n = 12, t = 13 years, r = 0.095 and A = 749,791. We have to find P,

[tex]P=\frac{A}{(1+\frac{r}{n})^{nt}}[/tex]

Replace with the values and solve,

[tex]P=\frac{749,791}{(1+\frac{0.095}{12})^{12\cdot13}}\approx219,128[/tex]

The interest earned is the difference between the initial deposit P and the final amount A,

[tex]i=A-P=749,791-219,128=530,663[/tex]

Hence, the interest earned would be $530,663.

Kiran is solving 2x-3/x-1=2/x(x-1) for x, and he uses these steps.He checks his answer and finds that it isn’t a solution to the original equation, so he writes “no solutions.” Unfortunately, Kiran made a mistake while solving. Find his error and calculate the actual solution(s).

Answers

Solution:

Given:

[tex]\begin{gathered} To\text{ solve,} \\ \frac{2x-3}{x-1}=\frac{2}{x(x-1)} \end{gathered}[/tex]

Kiran multiplied the left-hand side of the equation by (x-1) and multiplied the right-hand side of the equation by x(x-1).

That was where he made the mistake. He ought to have multiplied both sides with the same quantity (Lowest Common Denominator) so as not to change the actual value of the question.

Multiplying both sides by the same quantity does not change the real magnitude of the question.

The actual solution goes thus,

[tex]\begin{gathered} \frac{2x-3}{x-1}=\frac{2}{x(x-1)} \\ \text{Multiplying both sides of the equation by the LCD,} \\ \text{The LCD is x(x-1)} \\ x(x-1)(\frac{2x-3}{x-1})=x(x-1)(\frac{2}{x(x-1)}) \\ x(2x-3)=2 \\ \text{Expanding the bracket,} \\ 2x^2-3x=2 \\ \text{Collecting all the terms to one side to make it a quadratic equation,} \\ 2x^2-3x-2=0 \end{gathered}[/tex]

Solving the quadratic equation;

[tex]\begin{gathered} 2x^2-3x-2=0 \\ 2x^2-4x+x-2=0 \\ \text{Factorizing the equation,} \\ 2x(x-2)+1(x-2)=0 \\ (2x+1)(x-2)=0 \\ 2x+1=0 \\ 2x=0-1 \\ 2x=-1 \\ \text{Dividing both sides by 2,} \\ x=-\frac{1}{2} \\ \\ \\ OR \\ x-2=0 \\ x=0+2 \\ x=2 \end{gathered}[/tex]

Therefore, the actual solutions to the expression are;

[tex]\begin{gathered} x=-\frac{1}{2} \\ \\ OR \\ \\ x=2 \end{gathered}[/tex]

1 mile= 1,760 yards.1 kilometer= 1,000 metersIf Jose walked 2 miles this morning, about how many kilometers did he walk?

Answers

1 mile= 1.609 km

Then,

2*1.609=3.218 km

He walked 3.218 kilometers

How do I understand Standard Form of a Line? I don't know how to do it.

Answers

There are several forms in which one can write the equation of a line. Have in mind that TWO variables should be included in the equation. These two variables are: x and y.

If you type the equation in a form that looks like:

A x + B y = C

where the A, B, and C are actual numbers (like for example: 3 x - 2 y = 5)

This is the standard form of a line. to recognize it notice that bith variables x an y appear in separate terms on the LEFT of the equal sign., and a pure number (no variables) appears on the right of the equal sign.

Another form of writing the equation of a line is in the so called "solpe-intercept" form. This form looks like:

y = m x + b

Notice that in this case the variable ÿ" appears isolated on the left , and on the right of the equal sign you get a term with the variable x, and another constant (pure number) term (b). Like for example in the case of:

y = 3 x

What is 9207 /10 equivalent to?

Answers

Answer:

9207/10 is equivalent to 920.7

what is 2 to the 6 power

Answers

[tex]\begin{gathered} 2\text{ to the power 6 is } \\ 2^6 \end{gathered}[/tex][tex]2^6=2\times2\times2\times2\times2\times2=64[/tex]

Use disks and washers to find the volume of the solid the results when the area of the region y=x^3 y = 0, and x = 2 is revolved about the line x= 2

Answers

Solution

The functions that define the region in consideration are given below:

[tex]\begin{gathered} y=x^3 \\ y=0 \\ x=2 \end{gathered}[/tex]

The Washer Method:

- Plotting these functions would help us visualize the question better. This is done below:

- The question would like us to revolve around the region about line x = 2. The region is bounded by the Blue, Red, and Green line. This requires that we use the formula given below:

[tex]\begin{gathered} V=\int ^b_a{f(y)\mathrm{dy}} \\ \text{where,} \\ a\text{ and }b\text{ are the bounds of the integration along the y-axis} \end{gathered}[/tex]

-

We can represent the region bounded by the function by rearranging the functions as follows:

[tex]undefined[/tex]

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