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Setler79 [48]
3 years ago
11

A family has two cars. the first car has a fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of

35 miles per gallon of gas. during one particular week, the two cars went a combined total of 1975 miles, for a total gas consumption of 60 gallons. how many gallons were consumed by each of the two cars that week?
Mathematics
1 answer:
jeka57 [31]3 years ago
5 0
X : the gas used by first car in 1 particular week
y : the gas used by second car in 1 particular week
x + y = 60 \\ x = 60 - y
30x + 35y = 1975 \\ 30 \times (60 - y) + 35y = 1975 \\ ... \\ y = 35 \\ x = 60 - y = 60 - 35 = 25

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50 POINTS
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Answer:

<u>Part 1: C. $3,159.30</u>

<u>Part 2. C. –5; –135; –10,935</u>

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Part 1:

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Price of the boat after 11 years = Original price * (1 - Depreciation rate)^Time of utilization of the boat

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Part 2:

Let's find out the first term of the sequence given:

A(1) = -5 * 3¹⁻¹

A(1) = -5 * 1

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Let's find out the fourth term of the sequence given:

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Let's find out the eighth term of the sequence given:

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A(8) = -5 * 2,187

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2 years ago
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