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Sloan [31]
3 years ago
8

How many intervals of 1/2 are between -1 and 2?

Mathematics
1 answer:
Debora [2.8K]3 years ago
3 0
There are 7 intervals of 1/2 between -1 and 2.

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What is the sum of the first five terms of a geometric series with a1=6 and r=1/3?
Anuta_ua [19.1K]
The sum of a geometric sequence is:

s(n)=a(1-r^n)/(1-r), s(n)=nth sum, a=initial value, r=common ratio, n=term #

In this case we are told that a=6 and r=1/3 so:

s(n)=6(1-(1/3)^n)/(1-1/3)

s(n)=6(1-(1/3)^n)/(2/3)

s(n)=9(1-(1/3)^n), so the sum of the first 5 term is:

s(5)=9(1-(1/3)^5))

s(5)=9(1-(1/243))

s(5)=9(242/243)

s(5)=2178/243

s(5)=242/27

s(5)=8 26/27  ...if you wanted an approximation s(5)≈8.96 to the nearest hundredth...
3 0
3 years ago
Find the area and perimeter of the given<br>figure:​
JulijaS [17]

I think the area will be 20

Step-by-step explanation:

(b×h) 1/2

8×5=40

40÷1/2= 20

P.S am not that good at math but I hope this helps

8 0
3 years ago
What is the slope of a line whoes equation is y-4= 5 / 2 (x-2)
Verizon [17]

Answer:

5/2

Step-by-step explanation:

The x value is being multiplied by 5/2

and the slope is the value the x value is being multiplied by

so the slope is

5/2

3 0
3 years ago
Read 2 more answers
Point M is located at 6,7).
Karo-lina-s [1.5K]
A because it helps you answer
7 0
2 years ago
What is y equal negative four x minus eight
Vera_Pavlovna [14]
This would be y=-4x-8. This equation is in slope-intercept form, where the slope is -4/1 and the y-intercept is at point (0,-8).
8 0
3 years ago
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