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3 years ago

Which best describes the relationship between the successive terms in the sequence below? –3.2, 4.8, –7.2, 10.8, …

Mathematics

2 answers:

tekilochka [14]3 years ago

5 0

Answer:

A geometric progression common ratio -1.5

Semmy [17]3 years ago

4 0

Answer:

The correct answer is C) The terms have a common ratio of –1.5.

Step-by-step explanation:

The terms having a common ratio of -1.5 best describes the relationship between the successive terms in the sequence from the terms given below. Correct on edge2020 :)

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10. An arithmetic sequence has this recursive formula. What is the explicit formula?

Mrrafil [7]

Answer:

$a_{n}=45-3n$

Step-by-step explanation:

Method 1:

Arithmetic sequence is in the form

$a_{n} =a_{1} +(n-1)d\\$

d is the common difference, can be found by:

$d=a_{n}-a_{n-1}=-3$

Subtituting the $a_{1}$ and $d$

You get:

$a_{n}=42+(-3)(n-1)=45-3n$

Method 2 (Mathematical induction):

Assume it is in form $a_{n}=45-3n$

Base step: $a_{1} =45-3(1)=42$

Inducive hypophesis: $a_{n}=45-3n$

GIven: $a_{n+1} =a_{n}-3$

$a_{n+1}=45-3n-3=45-3(n+1)$

Proved by mathematical induction

$a_{n}=45-3n$

5 0

3 years ago

The quotient of ninety five and a number is what

djyliett [7]

This is how you solve it..
95/n=n
You could put 5 in and get 95/5=19.

8 0

3 years ago

Assume that θ is a positive acute angle. Given: sin θ =28/53 Find: sin2θ

antiseptic1488 [7]

Answer:

725 - 360 = 365

365 - 360 = 5

The acute angle is 5 degrees.

sin2θ = sin(2*5) = sin(10) = 0.1736

Step-by-step explanation:

3 0

2 years ago

How many rectangles can u make with 20 cubes

Mademuasel [1]

"How many rectangles can u make with 20 cubes"
The answer is 4

4 0

2 years ago

Read 2 more answers

Can someone please give me the answers to my math homework

jok3333 [9.3K]

Answer: #1 is 10. #2 is 24. #3 is 3 1/5. #4 is 1 1/9. #5 is 21. #6 is 10 2/3. #7 is 30. #8 is 11 3/7. I’m only telling you eight of them because you are in fifth grade and you should try to complete the worksheet even if you mess up. You will learn from your mistakes after the paper is graded.

Step-by-step explanation: To get the answer, all you have to do is flip the second number and then multiply.

3 0

3 years ago