Mean of 11,10,12,12,9,10,14,12,9 is ​

Answer:

Step-by-step explanation:

A discount of 40% was allowed on the price

To find the price after the discount first calculate the discount and subtract it from the original price

That's

[tex] \frac{40}{100} \times 7000[/tex]

= 2800

So the price after the discount is

#7000 - #2800

Which is

Hope this helps you

Answer:

6 chicken sandwiches to 4 veggie sandwiches

Step-by-step explanation:

edge 2020

Answer:

y^3z^4

Step-by-step explanation:

y*y*y*z*z*z*z

y*y*y=y^3

z*z*z*z=z^4

Together,

y^3z^4

Hope this helps ;) ❤❤❤

Answer:

your answer is A, y³ z⁴

Step-by-step explanation:

it was correct for me.

Answer:

2 ( n + 2 ) ( n + 1 2 )

Step-by-step explanation:

coefficient of the first term:  

2 = 2 × 1

coefficient of the last term:  

2 = 2 × 1

coefficient of the middle term (using only the factors above):  

5 = 2 × 2 + 1 × 1

2 n 2 + 5 n + 2 = ( 2 n + 1 ) ( n + 2 )

Alternative method:

Treat the given expression as a quadratic set equal to zero, with the form

a n 2 + b n + c

and use the quadratic formula

− b ± √ b 2 − 4 a c 2 a

This will given solutions

n = − 2  and  n = − 1 2

for a factoring

2 ( n + 2 ) ( n + 1 2 )

Hope this helped

Answer:

Hi! You already have the percentage of the nickel to the nearest hundredth, you just need to move to the left once to get to the tenth. That would mean the answer is 8.3%! Easy as that.

Answer:

8.3%

I just took the test

Answer:

D. 10

Step-by-step explanation:

9+4=13

x+3=13

x=10

The value of x is 10 which is correct option (D).

Angles of Intersecting Secants Theorem states that, If two lines intersect outside a circle, then the measure of an angle formed by the two lines is one half the positive difference of the measures of the intercepted arcs.

Given that,

Length of CW = 9 units,

Length of WV = 4 units,

Length of WU = 3 units,

Length of TW = x units,

⇒ Length of CW + Length of WV = Length of CV

⇒ 9 + 4

⇒  13

⇒ Length of TW + Length of WU = Length of CV

⇒ x + 3 = 13

⇒ x = 10 - 3

⇒ x = 10

Hence, the value of x is 10 which is correct option (D).

Learn more about Secants theorem here:

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Answer:

C.) 7√2/2

Step-by-step explanation:

tan¤ = opp/adj

tan 45° = y/7√2/2

1 = y/7√2/2

1 = 2y/7√2

7√2 = 2y

2y = 7√2

y = 7√2/2

NOTE: ¤ = Theta

Answer:  x²−9

Step-by-step explanation:

A square number is obtained ehen we multiply a number to itself.

For example: 5 × 5 = 5² = 25 [It is a square number]

We can do this in expression too, For example: z×z =z²

From all the given options, only x²−9 has both terms as square.

∵ x² = x × x

and 9 = 3×3= 3²

So that,  x²−9  =(x)²-(3)²

Hence, the correct option is x²−9.

Options:

A.0.25 centimeter = 3 kilometers

B.0.4 centimeter = 8 kilometers

C.0.75 centimeter = 15 kilometers

D.3 centimeters = 60 kilometers

E.6 centimeters = 144 kilometers

Answer:

B, C, D

Step-by-step explanation:

Distance between the two locations :

On map = 0.75 centimeter

Actual = 15 km

Using the scale drawing notation :

On map : actual

0.75 cm : 15 km

Therefore,

Actual / on map

15 / 0.75 = 20

This means :

1 cm on map represents 20 km on land

0.25 cm on map = (20 * 0.25) = 5 kilometers

0.4 cm on map = (20 * 0.4) = 8 kilometers

0.75 cm on map = (20 * 0.75) = 15 kilometers

3 cm on map = (20 * 3) = 60 kilometers

6 cm on map = (20 * 6) = 120 kilometers

Hence, only options B, C and D are correct

Answer:

b,c,d are correct.

Step-by-step explanation:

just shortened the answer above me°∪°

2cos pi/13 cos 9pi/13+ cos 3pi/13 +cos 5pi/13

=cos 10 pi/13 +cos 8 pi/13 +cos 3pi/13 +cos 5pi/13

=cos 10 pi/13 +cos 3pi/13 +cos 8pi/13 +cos 5pi/13

=2 cos pi/2 .cos 7 pi/26 +2 cos pi/2 .cos 3 pi /26

=2 (0)cos 7 pi /26 + 2(0) cos 3pi/26

=0 =R.H.S.

Answer:  see proof below

Step-by-step explanation:

Use the following identities:

2cos x · cos y = cos(x + y) + cos(x - y)

cos x + cos y = 2 cos (x + y)/2 · cos(x - y)/2

Use the Unit Circle to evaluate: cos(π/2) = 0

Proof LHS → RHS

[tex]\text{LHS:}\qquad \qquad \qquad 2\cos \dfrac{9\pi}{13}\cos \dfrac{\pi}{13}\quad +\quad \cos \dfrac{3\pi}{13}+\cos \dfrac{5\pi}{13}\\\\\text{Identity:}\qquad \quad \cos\bigg(\dfrac{9\pi}{13}+\dfrac{\pi}{13}\bigg)+ \cos\bigg(\dfrac{9\pi}{13}-\dfrac{\pi}{13}\bigg)+\quad \cos\bigg(\dfrac{3\pi}{13}\bigg)+\cos \bigg(\dfrac{5\pi}{13}\bigg)[/tex]

[tex]\text{Simplify:}\qquad \qquad \cos\bigg( \dfrac{10\pi}{13}\bigg)+\cos \bigg(\dfrac{8\pi}{13}\bigg)+\qquad \cos\bigg(\dfrac{3\pi}{13}\bigg)+\cos \bigg(\dfrac{5\pi}{13}\bigg)[/tex]

[tex]\text{Regroup:}\qquad \qquad \cos\bigg( \dfrac{10\pi}{13}\bigg)+\cos \bigg(\dfrac{3\pi}{13}\bigg)\quad +\quad \cos\bigg(\dfrac{8\pi}{13}\bigg)+\cos \bigg(\dfrac{5\pi}{13}\bigg)[/tex]

[tex]\text{Identity:}\qquad 2\cos \bigg(\dfrac{10\pi+3\pi}{13\cdot 2}\bigg)\cdot \cos \bigg(\dfrac{10\pi-3\pi}{13\cdot 2}\bigg)+\quad 2\cos\bigg(\dfrac{8\pi+5\pi}{13\cdot 2}\bigg)\cdot \cos\bigg(\dfrac{8\pi-5\pi}{13\cdot 2}\bigg)[/tex]

[tex]\text{Simplify:}\qquad 2\cos \bigg(\dfrac{13\pi}{26}\bigg)\cdot \cos \bigg(\dfrac{7\pi}{26}\bigg)+\quad 2\cos\bigg(\dfrac{13\pi}{26}\bigg)\cdot \cos\bigg(\dfrac{3\pi}{26}\bigg)\\\\\\.\qquad \qquad =2\cos \bigg(\dfrac{\pi}{2}\bigg)\cdot \cos \bigg(\dfrac{7\pi}{26}\bigg)+\quad 2\cos\bigg(\dfrac{\pi}{2}\bigg)\cdot \cos\bigg(\dfrac{3\pi}{26}\bigg)\\\\\\\text{Factor:}\qquad =2\cos\bigg(\dfrac{\pi}{2}\bigg)\bigg[ \cos \bigg(\dfrac{7\pi}{26}\bigg)+ \cos \bigg(\dfrac{3\pi}{26}\bigg)\bigg][/tex]

[tex]\text{Unit Circle:}\quad 2(0)\bigg[ \cos \bigg(\dfrac{7\pi}{26}\bigg)+ \cos \bigg(\dfrac{3\pi}{26}\bigg)\bigg][/tex]

Product of Zero         0

LHS = RHS:      0 = 0  [tex]\checkmark[/tex]

Answer:

50

Step-by-step explanation:

Follow the graph and the bricks go up by 50 per 1 layer

For 1 layer 50 bricks, for 2 layers 100 bricks, for 3 layers 150 bricks, and for 4 layers he uses 200 bricks.

The graph for a straight line is called the linear graph in the linear graph the increment of the data for both the axes is constant so it gave a linear relationship.

As we can see in the graph there is a relationship between the number of bricks and the layers of the bricks.

Therefore, for 1 layer 50 bricks, for 2 layers 100 bricks, for 3 layers 150 bricks, and for 4 layers he uses 200 bricks.

To know more about linear graphs follow

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Answer:

The correct option is;

The variable x has a coefficient

Step-by-step explanation:

The given vertex form of a quadratic function and the quadratic function can be written as follows;

Vertex form of a quadratic function, f(x) = (3·x + 1/3)² + 8/9

The quadratic function, f(x) = 9·x² + 2·x + 1

The vertex form of a quadratic function f(x) = a·x² + b·x + c is f(x) = a·(x - h)² + k

Where;

h = -b/(2·a) = -2/(2×9) = -1/9

k = f(h) = f(-1/9) = 9 × (-1/9)² + 2 × (-1/9) + 1 = 8/9

Which gives the vertex form a s f(x) = 9·(x - (-1/9))² + 8/9

f(x) = 9·(x + 1/9)² + 8/9

Therefore,  f(x) = (3·x + 1/3)² + 8/9 is not the vertex form of f(x) = 9·x² + 2·x + 1 because the variable x has a coefficient.

Answer:

x = -9/4

Step-by-step explanation:

x/3 - 2 = - 11/4

Add 2 to each side

x/3 - 2+2 = - 11/4+2

Get a common denominator on the right

x/3 = -11/4 + 8/4

x/3 = -3/4

Multiply each side by 3

x/3*3 = -3/4 *3

x = -9/4

Answer:

[tex]$ x= -\frac{9}{4} $[/tex]

Step-by-step explanation:

[tex]$\frac{x}{3} - 2 = -\frac{11}{4} $[/tex]

[tex]$\frac{x}{3} -\frac{6}{3} = -\frac{11}{4} $[/tex]

[tex]$ \frac{x-6}{3} = -\frac{11}{4} $[/tex]

Multiply both sides by 3

[tex]$ x-6 = -\frac{33}{4} $[/tex]

[tex]$ x= -\frac{33}{4} + 6$[/tex]

[tex]$ x= -\frac{33}{4} + \frac{24}{4} $[/tex]

[tex]$ x= -\frac{9}{4} $[/tex]

Answer:

the transformed function becomes: g(x) = 5 x - 30

Step-by-step explanation:

When the function f(x) = x is shifted down by a factor of 6 we have the following transformation:

f(x) --> x - 6

After this, a vertical stretch by a factor of 5 should affect the full functional expression in the following way:

5 ( x - 6) = 5 x - 30

Therefore the transformed function becomes: g(x) = 5 x - 30

Answer:

               Yes, it is.

Step-by-step explanation:

For each x we get y, and no two xes give the same y

Answer:

The first derivative of [tex]r(t) = 5\cdot t^{-2}[/tex] (r(t)=5*t^{-2}) with respect to t is [tex]r'(t) = -10\cdot t^{-3}[/tex] (r'(t) = -10*t^{-3}).

Step-by-step explanation:

Let be [tex]r(t) = \frac{5}{t^{2}}[/tex], which can be rewritten as [tex]r(t) = 5\cdot t^{-2}[/tex]. The rule of differentiation for a potential function multiplied by a constant is:

[tex]\frac{d}{dt}(c \cdot t^{n}) = n\cdot c \cdot t^{n-1}[/tex], [tex]\forall \,n\neq 0[/tex]

Then,

[tex]r'(t) = (-2)\cdot 5\cdot t^{-3}[/tex]

[tex]r'(t) = -10\cdot t^{-3}[/tex] (r'(t) = -10*t^{-3})

The first derivative of [tex]r(t) = 5\cdot t^{-2}[/tex] (r(t)=5*t^{-2}) with respect to t is [tex]r'(t) = -10\cdot t^{-3}[/tex] (r'(t) = -10*t^{-3}).

Answer:

6 candies

Step-by-step explanation:

The sentences "Ethan and his guests spent the first half...time for the guests to go home at 4:30 pm" are extra information because they don't relate to the problem, therefore, we can ignore them. We know that Ethan had 48 pieces of candy and that 8 guests came to his party. Since each guest got an equal amount of candy, to find the answer, we can do 48 / 8 = 6 candies.

Answer:

A

Step-by-step explanation:

Your answer is 5670 m

1km=1000m

5.67km=5.67×1000

=5670m

hope this helps

Answer:

5670

Step-by-step explanation:

Answer:

It creates a positive integer.

Step-by-step explanation:

Integers are whole number which could be negative or positive. Examples are; 2, 3, -1, -7 -5 etc.

Whenever an integer is squared, a positive integer is created. For example, let us consider integers; 3, 4, -3 and -4.

[tex](3)^{2}[/tex] = 3 × 3 = 9

[tex](-3)^{2}[/tex] = -3 × -3 = 9

Also,

[tex](4)^{2}[/tex] = 4 × 4 = 16

[tex](-4)^{2}[/tex] = -4 × -4 = 16

Therefore, the square of an integer creates a positive integer.

Step-by-step explanation:

A transformation may be defined as taking a basic function and then changing it slightly with the predetermined methods.  This changes will cause the required graph of that function to shift, move or stretch, which depends on the type of the transformation.

For example:

Let a function be : [tex]$f(x)= B^x$[/tex]

For any constants m and n, the function [tex]$f(x)= B^{x+m}+n$[/tex]  shifts the parent function.

- vertically n units and in same direction of the sign of n.

- horizontally m units and towards the opposite direction of the sign of m.

- The y-intercept becomes ([tex]$0, b^m+n$[/tex])

- The horizontal asymptote becomes y = n.

- the reflection about x -axis becomes [tex]$f(x)=- B^x$[/tex]

Answer:

Step-by-step explanation:

Hello, please consider the following.

[tex]x(t)=sin(t)\\\\dx=cos(t)dt\\\\\text{For x = }\dfrac{1}{\sqrt{2}}=\dfrac{\sqrt{2}}{2} \text{ we have } t = \dfrac{\pi}{4}[/tex]

So, we can write.

[tex]\displaystyle \int\limits^{\dfrac{1}{\sqrt{2}}}_0 {\dfrac{1}{\sqrt{1-x^2}}} \, dx =\int\limits^{\dfrac{\pi}{4}}_0 {\dfrac{cos(t)}{\sqrt{1-sin^2(t)}}} \, dt\\\\=\int\limits^{\dfrac{\pi}{4}}_0 {\dfrac{cos(t)}{\sqrt{cos^2(t)}}} \, dt\\\\=\int\limits^{\dfrac{\pi}{4}}_0 {\dfrac{cos(t)}{cos(t)}} \, dt \\\\=\int\limits^{\dfrac{\pi}{4}}_0 {1} \, dt\\\\=\large \boxed{\sf \bf \dfrac{\pi}{4}}[/tex]

Thank you

Answer:  [tex]\bold{\dfrac{\pi}{4}}[/tex]

Step-by-step explanation:

Note the following integral formula:   [tex]\int\limits^a_b {\dfrac{1}{\sqrt{1-x^2}}} \, dx =\sin^{-1}(x)\bigg|^a_b[/tex]

We can rationalize the denominator to get: [tex]\dfrac{1}{\sqrt2}\bigg(\dfrac{\sqrt2}{\sqrt2}\bigg)=\dfrac{\sqrt2}{2}[/tex]

*************************************************************************************

[tex]\int\limits^{\frac{\sqrt2}{2}}_0 {\dfrac{1}{\sqrt{1-x^2}}} \, dx \\\\\\=\sin^{-1}(x)\bigg|^{\frac{\sqrt2}{2}}_0\\\\\\= \sin^{-1}\bigg(\dfrac{\sqrt2}{2}\bigg)-\sin^{-1}(0)\\\\\\=\dfrac{\pi}{4}-0\pi\\\\\\=\large\boxed{\dfrac{\pi}{4}}[/tex]

0.2017 this is the answer i got

Answer:

0.02179

Step-by-step explanation:

8.5÷390 = 0.02179

Explanation:

It's probably not obvious, but the squiggly portion through the x intercept x = -1 is a triple root. This is because this portion resembles a cubic graph. If instead it was a more straightish line through this root, then we'd have a single root.

So because x = -1 is a triple root, this means the factor (x+1) has the exponent 3. We have the factor (x+1)^3

The other factor is (x-2) from x = 2 being the other root.

All together we have (x+1)^3*(x-2) as the complete factorization. The leading coefficient is 1 to have this graph open upward. Or put another way, since the end behavior is going to positive infinity for both endpoints, the leading coefficient must be positive.

Answer:

A= -1 B=10

Step-by-step explanation:

Answer:

a: -1

b: 10

edge 2020

Answer:

Step-by-step explanation:

Difference = New temperature - original temperature

                  = -12 - (18)

                 = - 30

New temperature is 30° less than the original temperature

Answer:

A statement, also known as an axiom, which is taken to be true without proof. Postulates are the basic structure from which lemmas and theorems are derived.

Step-by-step explanation:

The Addition Postulate: If you have one apple and Sally has one apple, when you both add the same quantity to your existing number of apples, you'll still have the same number of apples. Using algebra, the postulate states:

If x = y, then x + 4 = y + 4

The Subtraction Postulate: If you have ten apples and Sally has ten apples, when you both subtract the same quantity of apples from your existing number of apples, you'll still have the same number of apples.

If x = y, then x - 3 = y - 3

Without being repetitive, these same principles apply to both multiplication and division.

The Multiplication Postulate: If x = y, then x * 3 = y * 3

The Division Postulate: If x = y, then x / 7 = y / 7

Answer:

suggest or assume the existence, fact, or truth of (something) as a basis for reasoning, discussion, or belief.

Step-by-step explanation:

Answer:

A is in  length dimensions

Step-by-step explanation:

The expression:

x  =  A sin (2πft)

has in the second member two factors   A   and sin (2πft); a sine is a relation between two sides with the same dimension that means a sine is a number ( with minimum and maximum values of 0 for zero degrees and 1 for 90 degrees ). As t is in units of time ( seconds, minutes or hours) frequency "f", which is the number of cycles per unit of time       ( seconds, minutes or hours), t  and f should be both in the same unit, in order to get just a number for sin2πf.

Therefore A should be in units of length and x will get its units from A

For instance

x = A sin(2πft)  

t in seconds          f  in 1/seconds        A in meters

By substitution, we can see that

x[ m ]  = A [m] * sin[ 2π*sec* 1/sec ]

x[ m ]  = A [m] * number

Answer: 1/4

Step-by-step explanation:

​​-

Answer:

5/12 - 1/6

Step-by-step explanation:

Took the diagnostic