PLEASE HELP THE QUESTION IS BELOW!!

Answer:

B,MJAB=115°

D,mCBA=55°

Step-by-step explanation:

Answer:

Option C.

Step-by-step explanation:

The given expression is

[tex]\left(\sqrt{2}cis \dfrac{9\pi}{20}\right)^5[/tex]

It can be rewritten as

[tex]\left(\sqrt{2}\cos \dfrac{9\pi}{20}+i\sin\dfrac{9\pi}{20}\right)^5[/tex]

According to De moivre's Theorem:

[tex][r(\cos\theta+i\sin \theta)]^n=r^n(\cos n\theta +i\sin n\theta)[/tex]

Using De moivre's Theorem, we get

[tex](\sqrt{2})^5\left(\cos \dfrac{9\pi\times 5}{20}+i\sin\dfrac{9\pi\times 5}{20}\right)[/tex]

[tex]=4\sqrt{2}\left(\cos \dfrac{9\pi}{4}+i\sin\dfrac{9\pi}{4}\right)[/tex]

[tex]=4\sqrt{2}\left(\cos (2\pi +\dfrac{\pi}{4})+i\sin (2\pi+\dfrac{\pi}{4})\right)[/tex]

[tex]=4\sqrt{2}\left(\cos \dfrac{\pi}{4}+i\sin \dfrac{\pi}{4}\right)[/tex]

[tex]=4\sqrt{2}\left(\dfrac{1}{\sqrt{2}}+i\dfrac{1}{\sqrt{2}}\right)[/tex]

[tex]=4+4i[/tex]

Therefore, the correct option is C.

Answer:

[tex]12(3 + 4 + 5 + ...... + 12 + 13) = 1056[/tex]

Step-by-step explanation:

Given:

The attached

Required

Find the value of the expression

The interpretation of is to add the sequence: 12n

where n = from 3 to 13

Solving the for each term of the sequence

[tex]When\ n = 3, 12n = 12(3)[/tex]

[tex]When\ n = 4, 12n = 12(4)[/tex]

[tex]When\ n = 5, 12n = 12(5)[/tex]

....................

...........

...

.

[tex]When\ n = 12, 12n = 12(12)[/tex]

[tex]When\ n = 13, 12n = 12(13)[/tex]

The sum is then calculated as follows;

[tex]Sum = 12(3) + 12(4) + 12(4) + ...... + 12(12) + 12(13)[/tex]

12 is a common factor;

Hence;

[tex]Sum = 12(3 + 4 + 5 + ...... + 12 + 13)[/tex]

Replace ....... with actual numbers

[tex]Sum = 12(3 + 4 + 5 +6 + 7 + 8 + 9 + 10 + 11 + 12 + 13)[/tex]

[tex]Sum = 12(88)[/tex]

[tex]Sum = 1056[/tex]

Hence;

[tex]12(3 + 4 + 5 + ...... + 12 + 13) = 1056[/tex]

From the list of given options;

Option B is correct

[tex]12(3 + 4 + 5 + ...... + 12 + 13) = 1056[/tex]

Answer:

68.8cm^2

Step-by-step explanation:

A trapezoid=h/2(b1+b2)

A trapezoid=6.4/2(12.9+8.6)

A trapezoid=3.2(21.5)

A trapezoid=68.8cm^2

Answer:

520°

Step-by-step explanation:

A way to find the coterminal of an angle is to add or subtract mutiples of 360°

The angle which is not coterminal with 120° is 520°

"Any two angles that have the same starting and ending points regardless of the measurement are coterminal angles."

"In order to find a coterminal angle, simply add or subtract 360 degrees of the terminal angle as many times as possible."

For given example,

Given angle: 120°

First we find the coterminal angles with 120°

The coterminal angles with 120° are:

120° + 360° = 480°

120° + 720° = 840°

120° - 360° = -240°  (here, -360° means angle measured in clockwise direction)

So, the coterminal angles with 120° are 840°, 480°, -240°

Therefore, the angle which is not coterminal with 120° is 520°

Learn more about the coterminal angles here:

https://brainly.com/question/23093580

#SPJ2

Answer:

The answer is option B

Step-by-step explanation:

2ln 2 - 2ln3

= ln ( 2²/3²)

= ln (4/9)

Hope this helps you

Answer:

B) 2ln 2 – 2ln 3

Step-by-step explanation:

Answer: Undefined

Step-by-step explanation:

In geometry there are three  undefined terms that we use to define other terms:

Hence, the correct option is "Undefined".

Answer:

The probability that computers work more than 41 minutes is 0.15866 or 15.87%.

Step-by-step explanation:

We are given that a computer tallied the time to work for 200 days and found it reasonable to the normal curve. The mean is 35 minutes, and the standard deviation with six minutes.

Let X = the time taken by computer to work for 200 days.

So, X ~ Normal([tex]\mu=35, \sigma^{2} =6^{2}[/tex])

The z-score probability distribution for the normal distribution is given by;

                               Z  =  [tex]\frac{X-\mu}{\sigma }[/tex]  ~ N(0,1)

where, [tex]\mu[/tex] = population mean time = 35 minutes

           [tex]\sigma[/tex] = standard deviation = 6 minutes

Now, the probability that computers work more than 41 minutes is given by = P(X > 41 minutes)

      P(X > 41 minutes) = P( [tex]\frac{X-\mu}{\sigma }[/tex] > [tex]\frac{41-35}{6 }[/tex] ) = P(Z > 1) = 1 - P(Z [tex]\leq[/tex] 1)

                                                                = 1 - 0.84134 = 0.15866

The above probability is calculated by looking at the value of x = 1 in the z table which has an area of 0.84134.

Given:

It is given that surface area must be less than 150 cm².

Solution:

The Maximum Volume With Total Surface Area Less  than 150 cm² is shown in the table.

From the table, it can be concluded that for r=3.00 cm and h=4.95 cm the surface area will be less than 150 cm²  and the volume will be the maximum.

[tex]S=2\pi rh+2\pi r^2\\S=2\pi (3)(7.95)+2\pi3^2\\S=93.3+56.5\\S=149.8 \text{ cm}^2[/tex]

Calculate the volume.

[tex]V=\pi r^2h\\V=\pi(3)^2(4.95)\\V=139.96[/tex]

Hence, the required dimensions are r=3.00 cm and h=4.95 cm.

Answer:

i think A

plz correct me

Step-by-step explanation:

Answer:

1 hour and 43 minutes

Step-by-step explanation:

Add both of theyre work hours together you get 3/12 and 4/12

Then you add both 3/12 4/12

You get 7/12

They complete the job 12/7 hours =1 5/7 (1 hour 43minutes)

Answer:

1 5/7

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

4x(x-4)(x+1)

Step-by-step explanation:

Please see the picture.

Answer:

1 is c, 2 is d

Step-by-step explanation:

because thats the right answer ur welcome

Answer:

The answer is

Step-by-step explanation:

3√x + 7

x = 25

Substitute the value of x into the expression

That's

3(√25) + 7

√25 = 5

So we have

3(5) + 7

= 15 + 7

Hope this helps you

Answer:

22

Step-by-step explanation:

3 + 7 if x = 25.

3/25+7

3x5+7 multiply

15+7 calculate

solution =22

got it right on the test!

Answer:

I belive the answer should be B

Answer:

B.) f(x) = 3(4)x − 1

Step-by-step explanation:

A) f(x) = 12(4)x

B.) f(x) = 3(4)x − 1

C.) f(x) = 4(12)x

D.) f(x) = 4(3)x − 1

Given:

f(x+1) = 4f(x)

f(2)=12

f(2) = 12

f(3) = 4f(2) = 4 * 12 = 48

f(3)=48 and f(2)=12

From f(3)=48 and f(2)=12

r=48/12

=4

r=common ratio

Recall,

f(2)=12=ar

r=4

f(2)=ar=12

a*4=12

a=12/4

a=3

an=ar^(n-1)

For x term

an=3*4(x-1)

B.) f(x) = 3(4)x − 1

Answer:

B.) f(x) = 3(4)x − 1

Step-by-step explanation:

Answer:17/30

Step-by-step explanation:

You have 2/15 and 7/10. You have to find a common denominator. I used 30. Multiply 2/15 by 2/2 and 7/10 by 3/3 to get 4/30 and 21/30. Then solve this equation: 21/30-4/30. The answer is the answer to the problem.

25 + t = 57

t = 57 - 25

t = 32

so stacy made 32 necklaces

Answer:

A and C

Step-by-step explanation:

Part A

150+30x, x being the amount of visits she takes

Part C

150+30(3)

150+90

240

$240

Answer:

d. y= 5x+18

Step-by-step explanation:

y=mx+b is slope intercept form

Now we plug in the information given to us which is slope(m) is 5 and a point (x,y) which is (2,28).

So by substituting we get 28=5(2)+b

simplify to 28=10+b and when we subtract 10 from both sides to isolate 'b', we get that b = 18.

So now we use the values of slope(m) and the y-intercept(b) to write the equation:

y=5x+18

Hey there! I'm happy to help!

Slope-intercept form is a way to write the equation of a line, and it is very useful. It is y=mx+b. This equation shows how y is related to x on a line. The m represents the slope, which is the incline of the line. The b represents the y-intercept, or where the line hits the y-axis.

If you find any value for x and plug it into the equation, you will figure out what y-value it matches on the line. If you had the equation you could draw the line by plugging in x-values and plotting points and connecting the dots!

Anyways, we have a slope of 5. This means that so far our equation looks like y=5x+b. It does not tell us what the y-intercept is, so we need to figure it out!

If we have the values for m, x, and b, we can solve for y. Well, we don't have b, but we do have values for y, x, and m, so we should be able to solve for b!

We will plug in our point (2,28) and solve for b!

28=5(2)+b

28=10+b

b=18

Our y-intercept is 18.

So, we can write this equation in slope-intercept form for the line that follows the condition of slope 5 and passing through (2,28) below.

y=5x+18

Therefore, our answer is d. 5x+18.

Now you can find the equation of a line given the slope and a point! Have a wonderful day! :D

Answer:

so u could write about its teeth

Step-by-step explanation:

and its legs or its scary presence or its long arms and it erupted from a haunted house

hope this helps : )

i would appreciate it if you can heart and like this answer and maybe even give it 5 stars or brainliest

Answer

(1-1/2 2)= 3/4 <Exact Form>  0.75<Decimal Form>

1-(1)/(100^(2) = 9999/10000 <Exact Form> 0.9999 <Decimal Form>

Step-by-step explanation:

Hope this Helps! The Crystaline Gamerz on YT! Bye! please sub

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Explanation:

Each term multiplied out is of the form 1 - 1/(k^2) which we can write as 1^2 - (1/k)^2

Note we have something in the form a^2 - b^2 with a = 1 and b = 1/k

So  

a^2 - b^2 = (a-b)(a+b)

1^2 - (1/k)^2 = (1 - 1/k)(1 + 1/k)

1^2 - (1/k)^2 = [ (k - 1)/k ] * [ (k + 1)/k ]

----------------

Let P = [ (k - 1)/k ] * [ (k + 1)/k ]  represent the kth term we are dealing with

Then let Q be the term just after term P, so it's the (k+1) term

To form term Q, replace every k with k+1

Q =  [ (k+1 - 1)/(k+1) ] * [ (k+1 + 1)/(k+1) ]

Q = [ k/(k+1) ] * [ (k+2)/(k+1) ]

----------------

Let's multiply P and Q to find out what happens . See figure 1 in the attached images below.

As figure 1 shows, we see that the middle terms cancel out. This will happen when we multiply P*Q*R, where R is the term just after Q. Extend this idea out as far as you want and each time the middle terms will pair up and cancel.

All that's left are the first and last terms, which are

1 - 1/2 = 1/2

and

1 + 1/100 = 101/100

They multiply to 101/200

----------------

Figure 2 (also attached as an image) shows a longer way to do the problem. Basically I expanded out a bunch of terms to multiply, and then show how we have various terms pair up and cancel, in basically the same way as explained above. What's left are the first and last terms 1/2 and 101/100 which multiply to 101/200.

Answer:

ab² - a²b

Step-by-step explanation:

a²b⁴ - b²a⁴ can be factored as a²b²(b² - a²) which becomes a²b²(b + a)(b - a). Since the numerator and denominator both have (a + b) and ab the final answer is ab(b - a) = ab² - a²b.

Answer:

y=(x-2)^2

Step-by-step explanation:

just simply change the sign.

Answer:

the expression of this function is:

[tex]f(x)=|x-1|-1[/tex]

Step-by-step explanation:

This graph corresponds to an absolute value function, which as you can see has the minimum (vertex) at the point (1, -1) on the plane, and also that goes through the origin of coordinates (0, 0)

therefore, notice that from the point (0, 0) to (1, -1) there is a slope of "-1" which is going to characterize the steepness of the x- variable that resides inside the absolute value function. since the vertex has also moved from the characteristic (0, 0) in the function:

[tex]f(x)=|x|[/tex]

then we have to include a horizontal shift to the right in one unit (by subtracting 1 units from x), and a vertical shift  downwards one unit (by subtracting 1 from the full absolute value expression) in order to shift the vertex to the position (1, -1):

[tex]f(x)=|x-1|-1[/tex]

Answer:

5

Step-by-step explanation:

1. 15-[4-3*(-2)]

2.15-[4+6]

3.15-10

4.5

Answer:

1 - 9/7n

Explanation:

1/7 - 3(3/7n - 2/7)

distribute the 3 with the 2 fractions inside the parenthesis

1/7 - 9/7n + 6/7

add like terms (1/7 + 6/7)

7/7 - 9/7n

or

1 - 9/7n

Answer:

1 -9 sevenths n

step-by-step explanation:

Answer:

6 ft

Step-by-step explanation:

Since the red line is 9 feet long, and we know that [tex]3\cdot3 = 9[/tex], we can note that 3 inches goes into 9 inches 3 times.

Now that we are making the red line increase by 2 feet for every 3 inches, we can multiply the values.

2 feet × 3 times = 6 feet

So Carver should make the red line 6 feet long.

Hope this helped!

Answer:

6ft

Step-by-step explanation:

If the scale is 3in:2ft then every 3 inches is equal to 2 feet. 9in can be divided into 3 3in sections and after the sections are scaled 3 2t sections which in all are equal to 6ft.

Answer:

The awnser is 50:100 or simplified 1:2

Step-by-step explanation:

The ratio of ABDF is exactly half of ACDE since F is the midpoint of AE and B is the midpoint of AC