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3 years ago

Are these arithmetic sequences:

Mathematics

1 answer:

VladimirAG [237]3 years ago

8 0

Answer:

1. No

2. Yes

3. Yes

4. Yes

Step-by-step explanation:

In 1. the difference between each term is not constant.(it goes up by, 2, 4, 6)

2. The terms increase by the same amount(it all goes up by 3)

3. The terms decrease by the same amount(it all goes down by 5)

4. The terms increase by the same amount(it all goes up by 6)

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What is 8x - ( 3x + 7 )= 23

slavikrds [6]

8x - 3x - 7 = 23
5x - 7 = 23
5x = 30
x = 30/5 = 6

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2 years ago

On a blueprint, the scale says that 2 cm represents 3 m. What is the actual length of a wall if its measurement on the blueprint

Leokris [45]

Answer:

The actual length of the wall is 10.5 m

Step-by-step explanation:

Write and solve an equation of ratios to answer this question:

2 cm 3 m

--------- = ---------

7 cm L

Solve this for L by inverting both sides:

7cm L

---------- = --------

2 cm 3 m

and then multiplying both sides by 3m:

----- = L

The actual length of the wall is 10.5 m

4 0

2 years ago

Read 2 more answers

Travis jogged to his friend's house 10 miles away and then got a ride back home. It took him 2 hours longer to jog there than ri

spin [16.1K]

Using the relation between velocity, distance and time, it is found that his jogging rate was of 4.5 mph.

<h3>What is the relation between velocity, distance and time?</h3>

Velocity is <u>distance divided by time,</u> hence:

$v = \frac{d}{t}$

Jogging, his velocity was of v, while the time was of t + 2, for a distance of 10 miles, hence:

$v = \frac{10}{t + 2}$

Riding, his velocity was of 16, while the time was of t, also for a distance of 10 miles, hence:

$v + 16 = \frac{10}{t}$

Then, considering the first equation and replacing in the second:

$\frac{10}{t + 2} + 16 = \frac{10}{t}$

$\frac{10}{t} - \frac{10}{t + 2} = 16$

$\frac{10t + 20 - 10t}{t(t + 2)} = 16$

16t² + 32t - 20 = 0 -> t = 0.5.

Then his jogging rate in mph was:

$v = \frac{10}{0.5 + 2} = 4.5$

More can be learned about the relation between velocity, distance and time at brainly.com/question/24316569

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2 years ago

A population of bees is decreasing. The population in a particular region this year is 1250. After year 1, it is estimated that

ruslelena [56]

Answer:

1250 => 250 ( subtracted from the balance population )

1000 => 300

800 => 350

450. => 400

50.

So it will take around 5 years I think to be below 100.

Thank you and please rate me as brainliest as it will help me to level up

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3 years ago

What is chlorophyll<br><br>here is my pic

Mrrafil [7]

Step-by-step explanation:

Chlorophyll is the substance that gives plants their green color.
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2 years ago