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masya89 [10]
4 years ago
13

Write the explicit formula that represents the geometric sequence -2, 8, -32, 128

Mathematics
1 answer:
astraxan [27]4 years ago
5 0
An = a1 * r^(n - 1)....where a1 is the first term and r is the common ratio

to find the common ratio, take ur 2nd term and divide it by ur first term
so ur common ratio is : 8 / -2 = -4....this is basically saying that to find ur next term, u multiply by -4.

so ur rule is : an = -2 * -4^(n - 1) <==
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riadik2000 [5.3K]

Answer:

x = nickels

y= dimes

x + y = 34

.05x + .10y= $1.90

-.10x - .10y = -3.40

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-.05x = -1.50

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4 years ago
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Anuta_ua [19.1K]

Answer:

Yes i

Step-by-step explanation:

A supplementary angle can be two angles that sum up to 180 if you want you can have 2 angles that are 90 degrees that add up to 180 so therefore that would make a right angle.

6 0
3 years ago
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krok68 [10]

Answer:

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3 0
2 years ago
Simplify the expression -3z(1.8z-2.2).
alexdok [17]

Answer:

- 5.4z {}^{2}  + 6.6z

Step-by-step explanation:

Given:

-3z(1.8z-2.2)

Solution:

Applying Distributive property,we obtain

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Simplifying using PEMDAS:

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Done!

5 0
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dedylja [7]

Answer:

399.17 miles

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Gunnar's car gets 22.4 miles per gallon. His gas tank can hold 17.82 gallons of gas.

Gunnar's car travels with one gallon of gas = 22.4 miles

He can travel with 17.82 gallon of gas = 17.82 × 22.4

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Gunnar can travel 399.17 miles if he uses all of the gas in the gas tank.

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