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3 years ago

An arithmetic sequence has this recursive formula:

Mathematics

1 answer:

alexdok [17]3 years ago

7 0

Answer: choice C

Step-by-step explanation:

an=a1+d*(n-1)

an=9+(n-1)*(-3)

you can check the answer by plugging in the numbers, for example if n=1, an=9, if n=2 an=6 which is correct.

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Can someone solve these two equations for me ?

drek231 [11]

Here is your answers worked out !

6 0

3 years ago

Isabel’s car gets 33.5 miles per gallon. Her gas tank holds 15.1 gallons of gas how many miles can Isabel drive on a full tank o

bagirrra123 [75]

Isabel can drive 505.85 miles with a gas tank that holds 15.1 gallons of gas

Solution:

Given that, Isabel’s car gets 33.5 miles per gallon

Her gas tank holds 15.1 gallons of gas

To find: Number of miles can Isabel drive on a full tank of gas

Let "x" be the miles drive with 15.1 gallons of gas

From given,

1 gallon = 33.5 miles

15.1 gallon = x miles

This forms a proportion and we can solve the sum by cross multiplying

$1 \times x = 15.1 \times 33.5\\\\x = 505.85$

Thus Isabel can drive 505.85 miles on a full tank of gas

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4 years ago

What is 22 nickels equal to?

Viktor [21]

$1.10 is your answer

4 0

3 years ago

A bouncing ball reaches a height of 54 inches at its first peak, 36 inches at its second peak, and 24 inches at its third peak.

steposvetlana [31]

54, 36, 24 are the 1st 3 element of a geometric progression with 2/3 as a common ratio: PROOF:
the 1st term is 54, (a₁= 54) the 2nd term a₂ = 24, then
(a₂ = a₁.r) or 36 = 54.r → r= 36/54 = 2/3. Same logique for the 3rd term.
So 2/3 is common ratio. We know that :U(n) = a.(r)ⁿ⁻¹. Then if a =54 and r = x (given by the problem), then f(x) = 54.xⁿ⁻¹
n, being the rank of any element of this geometric progression

7 0

3 years ago

Read 2 more answers

Y=-4/3x Give the slope and y-intercept

morpeh [17]

Answer:

Slope=-4/3. Y-intercept=0

Step-by-step explanation:

Y=Mx+B

Y=-4/3x+0

8 0

3 years ago

Read 2 more answers