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3 years ago

Which argument is valid?

1 answer:

8 0

1 - True. If a number is divisible by 12 it's divisible by 6 and thus by 3

2 - False. A rhombus needn't have square angles

3 - False. the second proposition is unrelated to the first one, and doesn't allow us to deduce that cats have fur.

4 - False - We cannot link the first and second proposition in any way to make the third

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Write an explicit formula for an,the Nth term of the sequence 4,12,36

Rudik [331]

Answer:

$3^{n}+3^{n-1}$

Step-by-step explanation:

Since the sequence is geometric (it multiplies the previous number each time). The nth term sequence would be $x^n + yn$

Because the sequence multiplies by 3 each time, The base number in that equation would be $3^n +yn$ .

So $3^n$ of the equation would be:
$3, 9, 27$ .

Compare the 2 equations:
4, 12, 36

3, 9 ,27

The difference between the 2 equations is: 1, 3, 9 which itself is a geometric sequence so the nth term of this new equation is: $3^{n-1}$ .

Combine these 2 equations together and you get:

$3^{n}+3^{n-1}$ .

6 0

2 years ago

A sweatshirt originally priced at 28.00 is on sale for 22.00 what is the percent of decrease rounded to the nearest whole number

levacccp [35]

% of decrease would be 100 - (22*100)/28

=100-78.57 = 21.43%

3 0

3 years ago

the cricket team and the football team are sharing the field for their practices today. the cricket team meets for practice ever

polet [3.4K]

Answer:

4 days

Step-by-step explanation:

Crickets team = every 2 days

Football team = every 4 days

How much days from now will they have to share the field again?

Find the lowest common multiple of 2 days and 4 days

2 days = 2, 4, 6, 8, 10, 12, 14, 16, 18, 20

4 days = 4, 8, 12, 16, 20

The lowest common multiple of 2 days and 4 days = 4 days

Therefore, if the football team and Crickets team share the field to practice today, they will have to share the field again in the next 4 days

3 0

3 years ago

Find the value of (2.8-0.45)²+∛5.832

Ilya [14]

As you can see, 2.8 - 0.45 is 2.35.

Now, 2.35 squared is 5.225

∛5.832 if you simplify this you get 1.8.

1.8 + 5.225 = 7.3225

Hope this helps :)

8 0

4 years ago

Show your work:<br> (please dont answer with a link)

baherus [9]

Answer:

3) 8

4) 5.25 cups

Step-by-step explanation:

3) cross multiply:

36 × 10 = 360

45 × x = 45x

equate them both:

360 = 45x

divide both sides by 45

360 ÷ 45 = 8

x = 8

4) 8 people : 3 cups of flour

14 people : how many cups?

14 ÷ 8 = 1.75

to get from 8 people to 14 people we multiply by 1.75, so do the same thing to the 3 cups:

3 × 1.75 = 5.25 cups

5 0

3 years ago