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egoroff_w [7]
3 years ago
15

solve the following word problem. use x for the unknown value. the average cost of a car in 2013 is said to be 5 less than twice

the cost of a car in 2009. if the average cost of a car in 2013 is $25,000. how much was the average cost of a car in 2009?
Mathematics
1 answer:
Rashid [163]3 years ago
7 0
Let the average cost of car in 2009 be $x, then the average cost of a car in 2013 is 2x - 5
25,000 = 2x - 5
2x = 25,000 + 5 = 25,005
x = 25,005/2 = $12,502.50
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dlinn [17]

Answer:

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Step-by-step explanation:

In this question we have two right triangles. Triangle PQR and Triangle PQS.

Where S is some point on the line segment QR.

Given:

PR = 20

SR = 11

QS = 5

We know that QR = QS + SR

QR = 11 + 5

QR = 16

Now triangle PQR has one unknown side PQ which in its base.

Finding PQ:

Using Pythagoras theorem for the right angled triangle PQR.

PR² = PQ² + QR²

PQ = √(PR² - QR²)

PQ = √(20²+16²)

PQ = √656

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Now for right angled triangle PQS, PS is unknown which is actually the hypotenuse of the right angled triangle.

Finding PS:

Using Pythagoras theorem, we have:

PS² = PQ² + QS²

PS² = 656 + 25

PS² = 681

PS = 26.09

PS = 26

7 0
3 years ago
PLEASE HELP, BEEN STUCK FOR AN HOUR
djverab [1.8K]

Answer:

Step-by-step explanation:

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Now if we compare g(x) with our completing square form we get the following:

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When we simply compare the following we get ,

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For y-intercept:

For y-intercept meaning at which point will the graph cross the y-axis(0 , y)

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Answer:

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Step-by-step explanation:

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