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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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37 For a class picnic, two teachers went to the same store to purchase drinks. One teacher purchased 18 juice boxes and 32 bottl

Pavel [41]

Answer:

Step-by-step explanation:

Let j represent the cost of a juice box.

Let w represent the cost of a bottle of water.

One teacher purchased 18 juice boxes and 32 bottles of water, and spent $19.92.. This means that

18j + 32w = 19.92 - - - - - - - - - - - - 1

The other teacher purchased 14 juice boxes and 26 bottles of water, and spent $15.76. This means that

14j + 26w = 15.76- - - - - - - - - - - - 2

Multiplying equation 1 by 14 and equation 2 by 18, it becomes

252j + 448w = 278.88

252j + 468w = 283.68

Subtracting, it becomes

- 20j = - 4.8

j = - 4.8/- 20 = 0.24

Substituting j = 0.24 into equation 1, it becomes

18 × 0.24 + 32w = 19.92

4.32 + 32w = 19.92

32w = 19.92 - 4.32 = 15.6

w = 15.6/32 = 0.4875

Kara's prices are incorrect.

the cost of a juice box is $0.24

the cost of a bottle of water is $0.4875

7 0

3 years ago

Twice a number is equal to negative four. Which equation could be used to find the number? 2n = 4 2n = -4n 2n - 4 2n = -4

Pepsi [2]

Twice a number is equal to negative four :
2n = -4

answer
2n = -4
last one is your answer

4 0

3 years ago

Read 2 more answers

One lap around an indoor track is 0.15 mile. Brett runs 9 laps around the track. What is the total distance Brett runs?

Ket [755]

Answer: Brett runs for 1.35 miles in total

Step-by-step explanation:

1 4

0.15

x 9

———

1 .35

4 0

2 years ago

Read 2 more answers

PLEASE HELP PLEASE i don’t know how to do this

DochEvi [55]

Answer:

716.31454 and 228.01π

Step-by-step explanation:

Area = πr^2

π · 15.1^2 ≈ 716.31454

Area in terms of pi = 228.01π

Thank you for posting this question! If you feel my answer is correct, please mark Brainliest. If you need help with anything else, let me know! :)

8 0

3 years ago

Which of the following sets of points are vertices of a right triangle?

grandymaker [24]

Please find the picture for your triangle.
We know, area of a ∆ = 1/2 × base × height
Here, base = ( 1 + 7 ) units = 8 units
Height = ( 7 - 1 ) units = 6 units
Therefore, area of the ∆
= (1/2 × 8 × 6) square units
= 24 square units.

Answer:

24 square units

Hope you can get an idea from it.

Carry on learning.

Doubt clarification - use comment section.

3 0

2 years ago