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4 years ago

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

1 answer:

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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A coin collection is made up of 34 coins comprised of nickels and dimes. The total value of the collection is $1.90. How many di

riadik2000 [5.3K]

Answer:

x = nickels

y= dimes

x + y = 34

.05x + .10y= $1.90

-.10x - .10y = -3.40

-.05x + .10y = 1.90

-.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.

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3 years ago

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krok68 [10]

Answer:

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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

$(−3z)(1.8z)+(−3z)(−2.2)$

Simplifying using PEMDAS:

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

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2 years ago

Gunnar’s car gets 22.4 miles per gallon, and his gas tank can hold 17.82 gallons of gas. PART B: Gunnar’s car is close to empty

dedylja [7]

Answer:

399.17 miles

Step-by-step explanation:

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

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4 years ago