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aleksandrvk [35]
4 years ago
5

Is the sequence {a_n}={0.4,1.6,6.4,25.6,...} arithmetic, geometric, or neither? If arithmetic, identify the common difference, d

. If the sequence is geometric, identify the common ratio, r.
a) arithmetic; d=1.2
b) arithmetic; d=4
c) geometric; r=1.2
d) geometric; r=4
e) neither
Mathematics
2 answers:
lisabon 2012 [21]4 years ago
8 0

Answer:

d)  geometric; r = 4

Step-by-step explanation:

BlackZzzverrR [31]4 years ago
5 0

Answer:

  d)  geometric; r = 4

Step-by-step explanation:

Differences of adjacent terms are not constant (they are 1.2, 4.8, 19.2, ...), so the sequence is NOT ARITHMETIC.

Ratios of adjacent terms are constant (they are 1.6/0.4 = 6.4/1.6 = 25.6/6.4 = 4), so the sequence is geometric with a common ratio of 4.

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The area of circle is 770cm^2then find its circumfrence​
Gala2k [10]

Answer:

The circumference is 98.39 centimeters (rounded to 2 decimal places)

Step-by-step explanation:

The area of a circle has the formula  \pi r^2

The circumference of a circle has the formula  2\pi r

First, let's find r from area given:

\pi r^ 2= 770\\r^2 = \frac{770}{\pi}\\r=\sqrt{\frac{770}{\pi}} \\r=15.66

Now, we can use this value of r and plug in into the formula for circumference. Shown below:

2\pi (15.66)\\=98.39

The circumference is 98.39 centimeters (rounded to 2 decimal places)

6 0
3 years ago
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DENIUS [597]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
Which system of equations has the solution (4,−2)?
Marat540 [252]

Answer:

A)

Step-by-step explanation:

To find the answer we must solve each of the systems separately. Starting with the first one:

x + y = 2

2x - y = 10

We must find what x or y is equal to and then replace it in the second equation. I'll go with y as it seems easier:

x + y = 2

y = 2 - x

Now that we found y we replace it in the second equation this way. Be careful with the signs, the minus with change our signs:

2x - (2 - x) = 10

2x - 2 + x = 10

3x = 12

x = 12/3

x = 4

Now that we have x, we replace the variable with its value in one of the equations. Again, for simplicity I'll go with the one that seems easier.

4 + y = 2

y = 2 - 4

y = - 2

7 0
2 years ago
Milo and Audrey sold tickets to the school concert. Milo sold 14 fewer tickets than Audrey. if Milo sold 32 tickets how many tic
Jlenok [28]

Answer:

Audrey sold 46 tickets!

Step-by-step explanation:

If Milo sold 32 and sold 14 LESS than audrey than that means you have to add 32 and 14. Its that simple! 32+14=46. The question is asking about Audrey not Milo

5 0
4 years ago
A florist sold 14 flower bouquets yesterday, including 7 lily bouquets. Based on past data, how many of the next 20 bouquets sol
tensa zangetsu [6.8K]

Answer:

10

Step-by-step explanation:

From past data:

Fraction of lily sold :

Total flowers / number of lily

Total flowers = 14

Number of lily = 7

Fraction of lily = 14 /7 = 1/2

Going by these ;

Expected number of lilies in the next 20 bouquets sold :

Fraction of lily * number of flower in bouquet

1/2 * 20

= 10 lilies

5 0
3 years ago
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