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Juliette [100K]
3 years ago
7

What is the common difference for the arithmetic sequence?

Mathematics
2 answers:
Korolek [52]3 years ago
8 0

Answer:

-2.4

Step-by-step explanation:

The difference between any two consecutive terms (following - preceding) is -2.4. The negative sign corresponds to the observation that the sequence is decreasing.

slega [8]3 years ago
6 0

Answer:

the common difference is -1.4

Step-by-step explanation:

From 8.6 to 6.2 is a decrease of 1.4.  

From 6.2 to 3.8 is also a decrease of 1.4.

And so on.

So the common difference is -1.4.

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a fastest man in the world can run 100 meters in 9 seconds. how far can he run in 1 minute and 2 seconds
STALIN [3.7K]

Answer:

650-700 meters

Step-by-step explanation:

8 0
3 years ago
The equation $y=-4.9t^2+3.5t+5$ describes the height (in meters) of a ball thrown upward at $3.5$ meters per second from $5$ met
Georgia [21]

Answer:

Step-by-step explanation:

The position function is

s(t)=-4.9t^2+3.5t+5 and if we are looking for the time t it takes for the ball to hit the ground, we are looking for the height of the ball when it is on the ground. Of course the height of anything on the ground is 0, so if we set s(t) = 0 and solve for t, we will find our answer.

0=-4.9t^2+3.5t+5 and factor that however you are currently factoring in class to get that

t = -.71428 seconds or

t = 1.42857 seconds (neither one of those is rational so they can't be expressed as fractions).

We all know that time will never be a negative value, so the time it takes this ball to hit the ground is

1.42857 seconds (round how you need to).

4 0
3 years ago
21 marbles out of N are blue; probability of getting a blue one = 30%
MissTica
Probability=\frac{desired}{total}
0.3=\frac{21}{N}
0.3N=21
N=\frac{21}{0.3}
N=70

There are 70 total marbles. 
4 0
3 years ago
Write each expression<br> as a cube<br> 27x^3
horsena [70]

Answer:

How though?

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is an equation for the scenario the entrance fee to an amusement park is $9 plus $1.50 for each ride
MAVERICK [17]
E+r=
(e=9)
r=1.50)
or 9+1.50=
I think
3 0
3 years ago
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