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Salsk061 [2.6K]
3 years ago
8

Answer this pls fast ASAP

Mathematics
2 answers:
likoan [24]3 years ago
5 0

Answer:

14.13

Step-by-step explanation:

6/2=3

3^2=9

9x3.14=28.26

28.26/2=14.13

Katarina [22]3 years ago
4 0

Answer:

14.13 units^2.

Step-by-step explanation:

The area of a circle is found by doing pi * r^2. In this case, the diameter is 6. 6 / 2 = 3. So, r = 3.

pi * 3^2 = pi * 9 = 9pi.

This is a semicircle, so the area will be half of the whole circle.

9pi / 2 = 4.5 * pi = 4.5 * 3.14 = 14.13 units^2.

Hope this helps!

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PLEASE!!!!! HELP ME!!!!!!
kati45 [8]

Answer:

15 = a_1 r^4 (1)

1 = a_1 r^5 (2)

If we divide equations (2) and (1) we got:

\frac{r^5}{r^4}= \frac{1}{15}

And then r= \frac{1}{15}

And then we can find the value a_1 and we got from equation (1)

a_1 = \frac{15}{r^4} = \frac{15}{(\frac{1}{15})^4} =759375

And then the general term for the sequence would be given by:

a_n = 759375 (\frac{1}{15})^n-1 , n=1,2,3,4,...

And the best option would be:

C) a1=759,375; an=an−1⋅(1/15)

Step-by-step explanation:

the general formula for a geometric sequence is given by:

a_n = a_1 r^{n-1}

For this case we know that a_5 = 15, a_6 = 1

Then we have the following conditions:

15 = a_1 r^4 (1)

1 = a_1 r^5 (2)

If we divide equations (2) and (1) we got:

\frac{r^5}{r^4}= \frac{1}{15}

And then r= \frac{1}{15}

And then we can find the value a_1 and we got from equation (1)

a_1 = \frac{15}{r^4} = \frac{15}{(\frac{1}{15})^4} =759375

And then the general term for the sequence would be given by:

a_n = 759375 (\frac{1}{15})^n-1 , n=1,2,3,4,...

And the best option would be:

C) a1=759,375; an=an−1⋅(1/15)

4 0
3 years ago
One side of a triangle 7 the longest side is 9 what is the other side
spin [16.1K]
One side of a triangle is 7 the longest side would be 9 so will the other side
5 0
3 years ago
Sam needs a web designer. Designer A is offering her services for an initial $480 in addition to $105 per hour. Designer B is of
max2010maxim [7]

The two designers will charge same amount for 8 hours.

Step-by-step explanation:

Designer A charges;

Initial fee = $480

Charges per hour = $105

Let,

x be the number of hours, therefore, total cost for x hours will be;

A(x) = 480+105x    Eqn 1

Designer B charges;

Initial fee = $840

Charges per hour = $60

B(x)=840+60x     Eqn 2

When the amount will be same, both functions will be equal, therefore

A(x)=B(x)

480+105x=840+60x\\105x-60x=840-480\\45x=360

Dividing both sides by 45

\frac{45x}{45}=\frac{360}{45}\\x=8

The two designers will charge same amount for 8 hours.

Keywords: function, division

Learn more about functions at:

  • brainly.com/question/1414350
  • brainly.com/question/1430645

#LearnwithBrainly

4 0
4 years ago
What are the variables equal to and how to solve?
Darya [45]
This how you answer these questions. Try Answering the other 4. you Should get

2a. X=10.9
2b. C=47/5 or 9.4
3a. X=32.6
3b. X=55.7

I hope these helped

7 0
3 years ago
PLSS HELP ME WITH THISSS!! 35 POINTS
DENIUS [597]
The answer is: 12.8 F

The solution: -10.6+14.2+11-1.8
3 0
2 years ago
Read 2 more answers
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