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OlgaM077 [116]
3 years ago
11

Determine whether the sequence 7, 21, 35, 49 is geometric. If so, find its common

Mathematics
2 answers:
Masja [62]3 years ago
5 0

Answer:

B

Step-by-step explanation:

Firlakuza [10]3 years ago
4 0

Answer:

a. no

Step-by-step explanation:

The sequence is arithmetic.  It has a common difference of 14.

7 + 14 = 21

21 + 14 = 35

35 + 14 = 49

A geometric series has a common ratio (multiplication).  For example:

7 × 3 = 21

21 × 3 = 63

63 × 3 = 189

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In traveling from a dormitory to a certain city, a student went 1/5 of the way by foot, 2/3 of the way by bus, and the remaining
kykrilka [37]

Answer:

C

Step-by-step explanation:

Now, what we know is that the total distance from the dormitory to the city is 1 if expressed in fraction. What we need to know is the fraction of the journey that is scheduled as the last part.

We can get this by subtracting the fractions of the first two phases from 1.

This goes as follows:

1 - (1/5) - (2/3) = 2/15

Now, we know that the final 8 kilometers constitute a fraction of just 2/5

Hence, we know that 2/15 of the total journey is 8 kilometers.

Let the total journey distance be T. This means that 2/15 of T is 8km

2/15 * T = 8km

T = ( 8 * 15 )/2 = 120/2 = 60km

6 0
3 years ago
I need the area for this circle please help.
maria [59]
The area is 7.07
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2 years ago
Please help with this one<br><br> -30= -9x - 3=???
Naily [24]

Answer:

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Step-by-step explanation:

6 0
2 years ago
Which number is greater than -24
Sophie [7]
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6 0
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