2 years ago

Estimate.then find your product 92x68

Mathematics

2 answers:

Nonamiya [84]2 years ago

7 0

Estimation: about 6,000 (90x70=6300)
Answer (product): 6256

kobusy [5.1K]2 years ago

7 0

Answer: 6256

Step-by-step explanation:

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Write an explicit formula for an the nth term of the sequence 75,15,3,...

Usimov [2.4K]

Step-by-step explanation:

it is geometric

so we will use this equation:

a(n)=a1*(r)^(n-1)

and we have a(1)=75 , r=15/75=3/15=1/3

explicit formula: a(n)=75*(1/3)^(n-1)

hope this helps

3 0

2 years ago

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42 decreased by the product of 12 and a nummber 6

borishaifa [10]

42-(12*6)

42-(72)

=-30

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3 years ago

Each of the past 7<br> days, Frank traveled <br> 37.8miles. How many miles did he travel in all?

ValentinkaMS [17]

37.8 x 7 = 264.6

Check:

264.6/7 = 37.8

Frank traveled 264.6 miles altogether in the past 7 days.

Hope this Helps!!

7 0

2 years ago

What is the common ratio and explicit formula for -2,6,-18,54?

Snezhnost [94]

Answer:

The explicit formula for a given geometric sequence is of the form

$a_{4} =\frac{1}{(a_{1})^4}$

Step-by-step explanation:

Given sequence is ${\{-2,6,-18,54}\}$

Let $a_{1}=-2,a_{2}=6,a_{3}=-18,a_{4}=54$

To find the common ratio r:

$r=\frac{a_{2}}{a_{1}}$

$=\frac{6}{-2}$

$=-3$

Therefore r=-3

$r=\frac{a_{3}}{a_{2}}$

$=\frac{-18}{6}$

$=-3$

Therefore r=-3

Therefore common ratio is -3

Therefore given sequence is geometric sequence.

The explicit formula for a geometric sequence is $a_{n}=a_{1}^{r-1}$ , where common ratio is r.

From given sequence we are having r=-3

Therefore the explicit formula for a given geometric sequence is of the form $a_{4} =a_{1}^{-3-1}$

$a_{4} =a_{1}^{-4}$

$a_{4} =\frac{1}{(a_{1})^4}$

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2 years ago

Frank and James take 4 hours to paint a room. If frank painted alone it would take him 9 hours. How long would it take James to

aksik [14]

It would take james 9 hours to paint the room alone

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2 years ago