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3 years ago

Please help. The graph of f(t)=6•2^t shows the value of a rare coin in year t. What is the meaning of the y-intercept?

Mathematics

2 answers:

Sedaia [141]3 years ago

8 0

Notice that the y-intercept is the point on the graph where x=0 and y equals some value (determined by the equation where x = 0).

In this equation, the y-intercept would be where t = 0. Since t represents a year, the y-intercept represents the value of the coin in year 0, or when it was purchased. The value of the coin in this year 0 is determined by inserting 0 into our equation for t. Doing this, we find that the value of the coin in year 0 is 6. This fact correlates to answer D, "When it was purchased (year 0), the coin was worth $6"

Margarita [4]3 years ago

6 0

check the picture below.

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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

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QS = 5

We know that QR = QS + SR

QR = 11 + 5

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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)

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PQ = √656

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PS² = PQ² + QS²

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Leno4ka [110]

Answer:

Solution given:

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model B printers [b] prints=55books per day

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no of model A printers be x

and

no of model B printers be [9-x]

According to the question;

ax+(9-x)b=670 books

substituting value of a and b; we get

80x+(9-x)55=670

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x= $\frac{175}{25}$ =7

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no of model A printers =x=7

no of model B printers =9-x=9-7=2

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