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2 years ago

The nth term of the GP is given by

Mathematics

1 answer:

givi [52]2 years ago

6 0

Answer:

Step-by-step explanation:

hello :

An = 10 -10/2^n

the first 4 terms are :

A1 = 10 -10/2^1 = 10-5

A1 = 5

A2 = 10 -10/2^2 = 10-10/4 = 10-5/2 = (20-5)/2

A2 = 15/2

A3 = 10 -10/2^3 = 10-10/8 =10- 5/4 = (40-5)/4

A3 = 35/4

A4 = 10 -10/2^4 = 10-10/16 = 10-5/8 = (80-5)/8

A4 = 75/8

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Explain how you could estimate 22% of 78 to check if your answer is reasonable.

pickupchik [31]

Answer:

78 rounds to 80. So decrease 22% to 1/5. Increase 78 to 80. = 17.16.

I hope this will help you..

4 0

1 year ago

Read 2 more answers

D-21.4=87.9 Explain your answer

larisa [96]

D-21.4=87.9 \ solve for D

add 21.4 to both sides
D - 21.4 +21.4 =87.9 + 21.4

simplify
D = 109.3

7 0

3 years ago

A bicycle tire has a radius of 11 inches. To the nearest inch, how far does the tire travel when it makes 7 revolutions?

jok3333 [9.3K]

Answer:

d = 483.56 inches

Step-by-step explanation:

We have,

Radius of a bicycle tire is 11 inches. It is required to find the distance traveled by the distance covered by the tire when it makes 7 revolutions. One revolution means the circumference of circle. So,

$C=2\pi r\\\\C=2\times 3.14\times 11\\\\C=69.08\ \text{inches}$

In 7 revolution, it will cover a distance of 7C i.e.

$C=69.08\times 7\\\\C=483.56\ \text{inches}$

So, the tire will cover a distance of 483.56 inches in 7 revolutions

8 0

2 years ago

Evaluate 3a2 + 4b2 for a = 2 and b = 3. O 168 48 O 36

Juliette [100K]

Answer:

Step-by-step explanation:

a=2

b=3

3a^2+4b^2

3(2)^2+4(3)^2

3(2)(2)+4(3)(3)

3(4)+4(9)

12+36

Hope this helps ;) ❤❤❤

8 0

2 years ago

Read 2 more answers

Please help with these questions!

Colt1911 [192]

1/8 + 6/8 = 7/8
17 11/13 - 9 7/13 = 8 4/13
2/8 + 4/8 = 6/8 = 3/4
8/4 + 1/4 = 9/4 = 2 1/4
9/10 + 3/10 = 12/10 = 1 1/5
2 - 3/5 = 10/5 - 3/5 = 7/5 = 1 2/5
3/4 * 4 = 12/4 = 3
1/4 * 6 = 6/4 = 1 1/2

8 0

2 years ago