All categories

2 years ago

A student measured the volume of an iron nail to be 0.880 cm3. She found its mass was 6.92grams. What is the density of iron?

Mathematics

1 answer:

Natali [406]2 years ago

8 0

Answs,dv

Step-by-step explanation:

You might be interested in

a cell phone company plans to market a new smartphone. they have already sold 612 units durning the first week of the campaign.

Vadim26 [7]

The first term is 612.

The common ratio is 1.08 and

The recursive rule is $a_{n} = a^{n-1} \times r$

Step-by-step explanation:

the question to the problem is to write the values of the first term, common ratio, and expression for the recursive rule.

The first term :

In geometric sequence, the first term is given as $a_{1}$ .

⇒ $a_{1} = 612$

Now, the geometric sequence follows as 612, 661, ........

The common ratio (r) :

It is the ratio between two consecutive numbers in the sequence.

Therefore, to determine the common ratio, you just divide the number from the number preceding it in the sequence.

⇒ r = 661 divided by 612

⇒ r = 1.08

To find the recursive rule :

A geometric series is of the form a,ar,ar2,ar3,ar4,ar5........

Here, first term $a_{1} = a$ and other terms are obtained by multiplying by r.

Observe that each term is r times the previous term.
Hence to get nth term we multiply (n−1)th term by r .

The recursive rule is of the form $a_{n} = a^{n-1} \times r$

This is called recursive formula for geometric sequence.

We know that r = 1.08 and $a_{1}$ = 612.

To find the second term $a_{2}$ , use the recursive rule $a_{n} = a^{n-1} \times r$

⇒ $a_{2} = a^{2-1}\times r$

⇒ $a_{2} = a^{1}\times r$

⇒ $a_{2} = 612\times 1.08$

⇒ $a_{2} = 661$

3 0

3 years ago

F(x)=x+4and g(x)=x^3,what is (g f)(-3)

wel

If it is g(x) composed of f(x): 1 If it is g(x) times f(x): -27
(g•f)(-3) is multiplication, (gof)(-3) is composition.

4 0

3 years ago

Read 2 more answers

What is the definition of square root?

Mariana [72]

A square root is a number that produces a specific number when multiplied by itself. Basically it's the same number multiplied by itself.
hope this helps:)

6 0

3 years ago

Read 2 more answers

Simplify by dividing three over five divided by negative four over nine.

Kruka [31]

If I read that right:

(3/5)/(-4/9) is equal to

(3/5)*(9/-4)

-27/20

-1 7/20

3 0

2 years ago

Read 2 more answers

Maria can clean the entire house in two hours. Her sister, Sasha, can clean the house in three hours. How long would it take for

lisabon 2012 [21]

Maria do 1/2 work in 1 hour
Sasha do 1/3 work in 1 hour

Thus,
1/2+1/3=5/6 work in 1 hour
5/6 work in = 1 hour
1 work in =6/5=1.2 hours =72 minutes

3 0

2 years ago