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Katyanochek1 [597]
3 years ago
8

Determine if the following sequence is geometric A) 5,2,-1,-4B) 5,10,20,40​

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer:

A) No. It is an arithmetic sequence because you are subtracting by 3.

B) Yes. It is a geometric sequence because you are multiplying by 2.

Step-by-step explanation:

Arithmetic is addition or subtraction.

5 - 3 = 2    2 - 3 = -1    -1 - 3 = -4

Geometric is multiplication.

5 X 2 = 10    10 X 2 = 20    20 X 2 = 40

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7nadin3 [17]

The system of equations to find the cost of one adult ticket, a, and the cost of one child ticket, c are Roy's; 6a+2c=66 Elisa's 5a+4c=62.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Let's consider adults tickets be a and child tickets be c

so

Roy's purchase

6a+2c=66------1

Elisa's purchase

5a+4c=62-------2

Hence,  the system of equations

6a+2c=66------1

5a+4c=62-------2

solving simultaneously

6a+2c=66

5a+4c=62

Also,

 12a+4c=132

-5a+4c=62

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a=$10

put  a=70 in 1

6(10)+2c=66

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2c=66-60

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1 year ago
Plzz help me with this question
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Answer:

x = 5

Step-by-step explanation:

We need to find the value of x in this case.

For this, we need to consider that the triangles are similar. Now, we can find it as follows :

\dfrac{12}{3}=\dfrac{20}{x}\\\\x=\dfrac{20\times 3}{12}\\\\x=5

So, the value of x is equal to 5.

6 0
2 years ago
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