Find the measure of AED

Answer:

Table 4

Step-by-step explanation:

Just imagine the data tables are graphs, just presented in a different form.

How do you calculate the slope in a graph?  You divide the variation of Y by the variation of X.  That's the same thing here.  Let's look at each table, and calculate the slope based on the first 2 rows of each table:

Table 1:

S = (1 - -1)/(2-6)= 2/-4 = -2, not the one we want.

Table 2:

S = (8 - 4) / (0 - 2) = 4 / -2 = -2, not the one we want.

Table 3:

S = (4 - 5)/(-4 - -2) = -1 / -2 = 1/2, not the one we want.

Table 4:

S = (0 - 4)/(-2 - 0) = -4 / -2 = 2. Yes!  That's the one!

Answer:

Table 4

Step-by-step explanation:

Table 4 has a slope of 2.

(12 - 4)/(4 - 0) = 2

Answer:

A. 45°

Step-by-step explanation:

The smallest interior angle measure of any regular polygon is that of an equilateral triangle: 60°.

___

The corresponding exterior angle measure for interior angle x will be its supplement: 180° -x. This value must be a divisor of 360° 360° is not evenly divisible by 180°-45°=135°.

Answer:

What i got was -1 .

Step-by-step explanation:

[tex]\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{-\frac{1}{50}}{ h},\stackrel{\frac{1}{3}}{ k})\qquad \qquad radius=\stackrel{\frac{1}{2}}{ r} \\\\\\ \left[ x-\left( -\frac{1}{50} \right) \right]^2+\left[ y-\frac{1}{3} \right]^2=\left( \frac{1}{2} \right)^2\implies \left( x+\frac{1}{50} \right)^2+\left( y-\frac{1}{3} \right)^2=\frac{1^2}{2^2} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \left( x+\frac{1}{50} \right)^2+\left( y-\frac{1}{3} \right)^2=\frac{1}{4}~\hfill[/tex]

Answer:

Given the details of the study carried

out on Hospitals to study the possibility that carpers might be more likely to harbor

germs, in which air from rooms with carpet and those without carpet was pumped over a

dish of agar, and the number of bacteria colonies were counted after incubating

the dish for a fixed period of time. The response in this study is number of bacteria colonies in a dish.

Answer:

a(h) = 1.25h²

Step-by-step explanation:

The formula for the area of a rectangle is ...

A = HW . . . . . where H represents the height and W represents the width

If the image has a height of h, then the width is 1.25 times that, or 1.25h. Putting these values into the formula, we have ...

A = h·(1.25h)

A = 1.25h²

In function form, we can write a(h), area as a function of height, as ...

a(h) = 1.25h²

Answer:

  B.  C(x) = 0.02(x - 360)2 + 300

Step-by-step explanation:

The minimum of a quadratic function is found at its vertex. The vertex form of the equation lets you read the coordinates of the vertex directly, so that is the form most helpful for finding minimum cost.

___

Perhaps the next most helpful form is that of option D, sometimes called "intercept form." The vertex is located halfway between the intercepts, so will be halfway between 0 and 720. Of course, the vertex location at 360 is read directly from the vertex form of option B.

Answer:

A

Step-by-step explanation:

Please use " ^ " to denote exponentiation:  x^2 (not x2).

To determine the number of t-shirts that would minimize cost, we'd want to have a quadratic function graph that opens up, and to determine the vertex (which point would also be the minimum cost).

Equation A is the one we want.  Why?  because we can ignore the coefficient 0.02 in determining the minimum cost.  We see immediately that the coefficient of the x^2 term is a = 1 and that of the x term is b = -720.

Recall that the axis of symmetry passes through the vertex / minimum, and has equation

                                                                        720

x = -b / (2a).  With a = 1 and b = -720,   x = - --------- = 360

                                                                           2

Again, A is the correct answer.  The miminim cost occurs at x = 360 (shirts).

Answer:

The rate of change of the area of the circle when the radius is 4 meters = 2 meters²/minute ⇒ answer 4

Step-by-step explanation:

* Lets revise the chain rule in the derivative

- If dy/da = m and dx/da = n, and you want to find dy/dx

∴ dy/dx = dy/da ÷ dx/da = m ÷ n = m/n

* In our problem we have

- The rate of increasing of the circumference dC/dt = 0.5 meters/minute

- We need the find the rate of change of the area of the circle

 when the radius is 4 meters

- The common element between the circumference and the area

 of the circle is the radius of the circle

* We must to find dC/dr and dA/dr and use the chain rule to

 find dA/dr

- Find the rate of change of the radius dr/dt

∵ C = 2πr

- Find the derivative of C with respect to r

∴ dC/dr = 2π ⇒ (1)

∵ dC/dt = 0.5 meters/minute ⇒ (2)

- Divide (1) by (2) to get dr/dt by using chain rule

∵ dC/dt ÷ dC/dr = 0.5 ÷ 2π

∴ dC/dt × dr/dC = 0.5 × 1/2π ⇒ cancel dC together and change

   0.5 to 1/2

∴ dr/dt = 1/2 × 1/2π = 1/4π ⇒ (3)

- Find the rate of change of the area dA/dt

∵ A = πr²

- Find the derivative of A with respect to r

∴ dA/dr = 2πr

∵ r = 4

∴ dA/dr = 2π(4) = 8π ⇒ (4)

- Multiply (4) by (3) to get dA/dt by using chain rule

∵ dA/dr × dr/dt = 8π × 1/4π ⇒ divide 8 by 4 and cancel π

∴ dA/dt = 2 meters²/minute

* The rate of change of the area of the circle when the radius is

  4 meters = 2 meters²/minute

The rate of change of the area of the circle when the radius is 4 meters is 2m²/min

The formula for calculating the circumference of a circle is expressed as;

C = 2πr

where:

r is the radius of the circle

The rate of change of circumference is expressed as:

[tex]\frac{dC}{dt} = \frac{dC}{dr} \times \frac{dr}{dt} \\0.5=2 \pi \times \frac{dr}{dt}\\ \frac{dr}{dt} = \frac{0.5}{2\pi} \\ \frac{dr}{dt} = 0.0796 m/min[/tex]

The change in area of the circle is expressed as:

[tex]\frac{dA}{dt} = \frac{dA}{dr} \times \frac{dr}{dt}\\ \frac{dA}{dt} =2 \pi r\times 0.0796\\ \frac{dA}{dt} = 2(3.14)(4)\times 0.0796\\ \frac{dA}{dt} = 2m^2/min\\[/tex]

Hence the rate of change of the area of the circle when the radius is 4 meters is 2m²/min

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Answer:

113 inches^2

Step-by-step explanation:

Answer:-

Central angle , Ф/2π , A = Ф/2 r²

The ratio is 1/3 , V = 1/3 Bh

The equation of the circle in standard form is (x - 4)² + (k - 1)² = 25

Step-by-step explanation:

* Lets revise the rules of the area of the sector of a circle

- The area of the sector which has a central angle Ф° is

  (Ф°/360°) × πr², where 360° is the measure of the circle and r is

  the radius of the circle

- The area of the sector which has a central angle Ф radians is

  (1/2) r²Ф

* Lets complete the missing in the 1st picture

- The ratio of the sector's area A to the circle's area is equal to the

  ratio of the central angle to the measure of a full rotation of the circle

- A full rotation of a circle is 2π. This proportion can written as

 A/πr² = Ф/2π

- Multiply both sides by πr² to get A = Ф/2 r² where Ф is the measure

 of the central angle and r is the radius of the circle

* Lets revise the rules of the volume of the prism and the volume

 of the pyramid, where they have the same base and height

- The volume of the prism = area of the base × its height

- The volume of the pyramid = 1/3 × area of the base × its height

- From them the ratio of the volume of the pyramid to the volume

 of the prism is 1/3

- The formula of the volume of the prism is V = Bh, where B is the

  area of the base and h is the height, the formula of the volume

  of the pyramid is V = 1/3 Bh

* Lets revise the standard form of the equation of a circle with

 center (h , k) and radius r

- The equation is: (x - h)² + (y - k)² = r²

∴ x² - 2hx + h² + y² - 2ky + k² - r² = 0

∵ x² - 8x + y² - 2y - 8 = 0

- Lets equate the two equation

∴ x² - 2hx + h² + y² - 2ky + k² - r² = x² - 8x + y² - 2y - 8 = 0

∵ -2h = -8 ⇒ ÷ -2

∴ h = 4

∵ -2k = -2 ⇒ ÷ -2

∴ k = 1

∵ h² + k² - r² = -8

∴ (4)² + (1)² - r² = -8

∴ 16 + 1 - r² = -8

∴ 17 - r² = -8 ⇒ subtract 17 from both sides

∴ -r² = -15 × -1

∴ r² = 25

* Substitute the values of h , k , r in the equation of the standard

 form of the circle

∴ (x - 4)² + (k - 1)² = 25

* The equation of the circle in standard form is (x - 4)² + (k - 1)² = 25

Answer:

  462 cm^2

Step-by-step explanation:

The centerline of the cloth area has a radius of (28 cm + 14 cm)/2 = 21 cm, so its length will be 1/4 of the circumference of a circle of that radius:

  cloth centerline length = (1/4)·2πr = (π/2)·21 cm = (22/7)/2 · 21 cm = 33 cm

The width of the cloth portion is ...

  28 cm - 14 cm = 14 cm

so the area of the cloth portion will be the product of centerline length and width:

  (33 cm)(14 cm) = 462 cm^2

Answer:

  The 6% simple interest account earns more interest in 2 years.

Step-by-step explanation:

You can compare the multipliers in the interest formulas.

For simple interest, the amount in the account (A) starting with principal P and earning at rate r for t years will be ...

  A = P(1 +rt)

For the values given, r=.06 and t=2, the multiplier is ...

  1 +rt = 1 +.06·2 = 1.12

__

For interest compounded annually, the amount will be ...

  A = P(1 +r)^t

For the given values, the multiplier is ...

  (1+r)^t = (1.04)^2 = 1.0816

__

Since 1.12 > 1.0816, the account earning simple interest will earn more interest.

Answer:

  4.9 cm

Step-by-step explanation:

The original can has a volume of ...

  V = πr²h = π(6 cm)²(10 cm) = 360π cm³

The new can will have the same volume, but a different height:

  360π cm³ = πr²(15 cm)

  24 cm² = r² . . . . . divide by 15π cm

  r = √24 cm ≈ 4.9 cm . . . . . take the square root

The new radius must be about 4.9 cm.

Answer:

the anwser is 4.9

Step-by-step explanation:

The line integral you need to compute is

[tex]\displaystyle\int_C\langle2xy^2,4x^3+y\rangle\cdot\mathrm d\vec r[/tex]

By Green's theorem, this is equivalent to the double integral,

[tex]\displaystyle\iint_D\left(\frac{\partial(4x^3+y)}{\partial x}-\frac{\partial(2xy^2)}{\partial y}\right)\,\mathrm dx\,\mathrm dy=\iint_D(12x^2-4xy)\,\mathrm dx\,\mathrm dy[/tex]

where [tex]D[/tex] is the region with boundary [tex]C[/tex]. This integral is equal to

[tex]\displaystyle\int_0^\pi\int_0^{\sin x}(12x^2-4xy)\,\mathrm dy\,\mathrm dx=\int_0^\pi(12x^2\sin x-2x\sin^2x)\,\mathrm dx=\boxed{\frac{23\pi^2}2-48}[/tex]

Answer:

(a) y = ±(√x)/2

Step-by-step explanation:

You want to find y such that ...

x = f(y)

x = 4y^2 . . . . . . . put in the expression for f(y)

x/4 = y^2 . . . . . . .divide by 4

±√(x/4) = y . . . . . take the square root

y = ±(√y)/2 . . . . . simplify

Answer:

  -∞ ; x = 3

Step-by-step explanation:

The graph tends toward -∞ as x approaches 3 from the left. Thus there is a vertical asymptote at x=3, the value of x that makes the denominator zero.

ANSWER

Option A

EXPLANATION

The graph of g(x) has equation:

[tex]g(x) = \sqrt[3]{ x + 2 } - 4[/tex]

The parent function is

[tex]f(x) = \sqrt[3]{x} [/tex]

To obtain the graph of g(x), we must shift f(x) 2 units to the left and 4 units down.

The graph of this function is shown in the attachment.

The correct choice is option A.

Answer:

$63.36

Step-by-step explanation:

First we need to determine how many pencils are needed

8 pencils times 96 students

8*96 =768 pencils

A dozen is 12 pencils

Divide the number of pencils needed by 12 to determine how many dozen pencils are needed

768/12 =64

We need 64 dozen pencils

They cost .99 per dozen

64*.99 =63.36

It will cost $63.36 for  the pencils

Answer:

[tex]V=43.35\pi[/tex] [tex]m^3[/tex]

Step-by-step explanation:

The equation for the volume of a cylinder is [tex]V=\pi r^2h[/tex]

As we know what h and r are, we can plug them into the equation to get

[tex]V=\pi (1.7)^2(15)[/tex]

This then simplifies to

[tex]V=43.35\pi[/tex] [tex]m^3[/tex]

The volume of the cylinder in terms of pi is 43.35π cm³

From the question, we are to determine the volume of the cylinder

The volume of a cylinder can be calculated by using the formula,

V = πr²h

Where V is the volume of the cylinder

r is the radius

and h is the height

From the given information,

h = 15m

r = 1.7 m

Putting the parameters into the formula, we get

V = π × 1.7² × 15

V = π × 2.89 × 15

V = 43.35π m³

Hence, the volume of the cylinder is 43.35π cm³.

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Answer:

B

Hope This Helps!   Have A Nice Day!!

Answer:

b

Step-by-step explanation:

Let's call the two numbers x and y.

We know that x+y = 842 and that x-y = 314

Now that we have two equations, we can solve using substitution by solving for one variable in one of the equations, and plugging that in for the same variable in the other equation.

Lets solve for x in the second equation to get:

x = 314 + y

Now plug in 314+y for x in the first equation:

(314 + y) + y = 842

Combine like terms:

314 + 2y = 842

Now solve for y:

2y = 842-314

2y = 528

y = 264

Finally, plug 264 in for y to solve for x:

x + 264 = 842

x = 842-264

x = 578

The two numbers are 578 and 264.

Answer:

B. The sum function is linear but the volume function is not

Step-by-step explanation:

We are given that f(x) and g(x) are linear. Due to this, the sum function S(x) is linear.

And we know the shape of our figure, so we just need to multiply the dimensions for V(x) but the product of three linear functions results in a cubic function, and we conclude V(x) is not linear.

Glad to answer.

Answer:

db / dt = kb  

this becomes b(t) = Ce^(kt)  

C = 100, the initial population  

P(1) = 420 = 100 e^(1k)  

4.2 = e^k  

ln 4.2 = k  

a) thus, b(t) = 100 e^(t ln 4.2)  

b) b(3) = 100 e^(3 ln 4.2)  

c) growth constant will still be ln 4.2 (constant percentage of populatioin)  

d) 10000 = 100 e^(t ln 4.2)  

100 = e^(t ln 4.2)  

ln 100 = t ln 4.2  

t = ln 100 / ln 4.2

Step-by-step explanation:

Answer:

15°

Step-by-step explanation:

If CB is a diameter, the arc BKAC is a semicircle and has a degree measure of 180.  If the measure of angle BCK is 20 and it is an inscribed angle, then the measure of the arc it intercepts is twice that.  So arc BK measures 40 degrees.  That means that arc KA has a measure that is found by subtracting arc AC and arc BK from 180.  180 - 40 - 110 = 30.  If that arc is 30 and the angle that intercepts it is inscribed, then the angle measure is half the measure of the arc. So the angle is 15°

Area of parallelogram(A) = base×hight

=4.7×3.3=15.51 sq. cm

Answer:

[tex]Area=15.51cm^2[/tex]

Step-by-step explanation:

The given figure is a parallelogram.

The area of a parallelogram is calculated using the formula:

[tex]Area=b\times h[/tex]

The base of the 4.7 cm.

The height is 3.3 cm.

We substitute the given values into the formula to obtain;

[tex]Area=4.7\times 3.3[/tex]

We multiply out to obtain;

[tex]Area=15.51cm^2[/tex]

Answer:

[tex]y=\frac{1}{12}(x+5)^2+2[/tex]

Step-by-step explanation:

We start with the standard form of a parabola which is

[tex](x-h)^2=4p(y-k)[/tex]

We know h and k from the vertex, we just need to solve for p and then simplify the equation.  P, by definition, is the distance between the directrix and the vertex.  That is 3 units.  So p = 3.  Fitting that into our equation along with h and k gives us:

[tex](x+5)^2=4(3)(y-2)[/tex]

Divide both sides by 12, then add the 2 to both sides and we have our parabola!

Answer:

44.444%, (B, B, B), (B, B, G), (B, G, B), (B, G, B), (B, G, G), (G, B, B), (G, B, G), (G, G, B), (G, G, G)

Step-by-step explanation:

We will start with the second part of the question, listing out all of the possible combinations that can occur from this data set.  There is a 50/50 chance of having a girl or a boy, and there are three children.  For now we'll use B to represent a boy and G for a girl.  It goes as follows:

(B, B, B), (B, B, G), (B, G, B), (B, G, B), (B, G, G), (G, B, B), (G, B, G), (G, G, B), (G, G, G)

I often find it easy to write out a branch diagram to help me visualize this problem and make sure I have all possibilities. (See attached image)

Count the total number of combinations (9).  Next, count the number that include exactly 2 girls (4).  With this information, we now know that there is a 4 out of 9 chance of having exactly 2 girls and one boy.  4/9 is in simplest form, so all you have to do is find the percentage (44.444%)

Answer:

C or .375

Step-by-step explanation:

let's say is "x", so "x" is then 100% of the whole bill.

we know 15% is 22.05, what is "x"?

[tex]\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 22.05&15\\ x&100 \end{array}\implies \cfrac{22.05}{x}=\cfrac{15}{100}\implies 2205=15x \\\\\\ \cfrac{2205}{15}=x\implies 147=x[/tex]

Answer:

$147

Step-by-step explanation:

15% over 100 is .15

So you get .15x= 22.05

Get x by itself by dividing .15 by .15

whatever you do to one side you have to do to the other so divide 22.05 by .15 and you get $147

Answer:

No solution

If you multiply the 1st by 4 and the second by -5

The result is

20x +40y= 20

-20x-40y= -20

When you add both equations the result is  0=0

Step-by-step explanation:

There is no solution for 5x + 10y = 5; 4x + 8y = 5 as they are parallel lines.

A linear equation is an algebraic equation of the form y=mx+b. involving only a constant and a first-order (linear) term, where m is the slope and b is the y-intercept.

The given pair of equation is :

5x + 10y = 5

4x + 8y = 5

[tex]a_1[/tex] =5, [tex]b_1[/tex]=10, [tex]c_1[/tex]=5

[tex]a_2[/tex]= 4, [tex]b_2[/tex]= 8, [tex]c_2[/tex]= 5

Now, checking the different condition on two pair of equations

So, we have the satisfied condition as

[tex]\frac{a_1}{a_2} = \frac{b_1}{b_2} \neq \frac{c_1}{c_2}[/tex]

= [tex]\frac{5}{4} =\frac{10}{8}\neq \frac{5}{5}[/tex]

which is condition for parallel.

Thus, There is no solution

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The answer is watt. :D