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2 years ago

Is anyone any good at Pre-Algebra? I need help.

Mathematics

2 answers:

Strike441 [17]2 years ago

7 0

I'm OKAY at it, depends on the question

stiks02 [169]2 years ago

5 0

Answer:

Ok 19$ fortnite card. Who wants it!, and yes I am giving it away, and remember, share, share, share, and trolls, don't get blocked!

Step-by-step explanation:

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In the number 7.46 the _ in the ones place is 7. The 4 in the _ place is 0.4. The _ in the hundredths place is blank.

horrorfan [7]

In the number 7.46, the number in the ones place is 7. The 4 in the tenths place is 0.4. The number in the hundredths place is 0.06.

5 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

Which decimal number is equal to 2/3? 0.6 0.66 0.6....... 0.67

Roman55 [17]

2/3 = .66
Hope this helps!!

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2 years ago

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