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kherson [118]
3 years ago
15

Find an explicit rule for the nth term of the sequence. 7, 21, 63, 189, ...

Mathematics
1 answer:
SpyIntel [72]3 years ago
8 0

Answer:

7 \times  {3}^{n - 1}

Step-by-step explanation:

using form:

a \times  {r}^{n - 1}

where a: starting number

where r: common ratio (in this case each next term is 3 times previous term)

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How do I find the surface area and volume of the larger figure using that of the smaller figure?
dalvyx [7]
We know that
scale factor=1/8

volume smaller figure=[scale factor]³*volume larger figure
so
volume larger figure=volume smaller figure/[scale factor]³
volume smaller figure=7 km³
volume larger figure=7/[1/8]³----> 7/(1/512)---> 7*512---> 3584 km³

the answer Part a) is 
the volume of the larger figure is 3584 km³

surface area smaller figure=[scale factor]²*surface area larger figure
surface area larger figure=surface area smaller figure/[scale factor]²
surface area smaller figure=9 km²
surface area larger figure=9/[1/8]²----> 9/(1/64)---> 9*64---> 576 km²

the answer part b) is
the surface area of the larger figure is 576 km²

4 0
3 years ago
Complete the table using the rule y=x-1/4
IgorLugansk [536]
If y=X-1/4 then this is what your chart will look like:

Y = X
1 = 0.75
2 = 1.75
3 = 2.75
4 = 3.75
5 = 4.75

Plz mark brainliest
3 0
3 years ago
Worth 50 Points!!
Naddika [18.5K]
Hello There!

These statements are not equal. If you solve them, you will not get the same value.

Hope This Helps You!
Good Luck :)
7 0
3 years ago
Instructions: Simplify the algebraic expression.<br><br> −12(32x−10y)
allochka39001 [22]

Answer:

-384x - 120y

Step-by-step explanation:

General Concepts and Formulas:

Brackets

Parentheses

Exponents

Multiplication

Division
A
ddition
S
ubtraction

Steps:

1) Distribute

-12(32x-10y)

We must distribute the expression above by multiplying -12 by the coefficients and then adding the variables.

So first, multiple -12 by 32 and add the variable 'x' when getting the product:

-12(-384x - 10y)

Now that we have one part, let's solve the other part.

We now must multiple -12 by -10, which gets us 120, now we must plug in:

(-384x - 120y)

(Remove parenthesis)

⇒  -384x - 120y

4 0
1 year ago
Alex gets paid $2.25 a tree for tree planting up north. In one week, he planted 437 trees. What is his wage?
Amiraneli [1.4K]

Answer:

Hey Beebzie

Dang he part of 20m trees? And is Alex a he or she, we'll never know, so I'll just refer to Alex as "it" to not gender appropriate anyone.

So it gets paid 2.25 for one tree. It planted 437 tress.

We take 2.25 x 437 to know the amount of money earned for all trees it planted.

The answer is $983.25, or A. I don't want to gender appropriate the letter "A" either because it could be option 1 or a different letter so I'll just say the answer again to not be sexist, $983.25

6 0
3 years ago
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