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aleksandrvk [35]
3 years ago
6

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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Fran swims at a speed of 2.8 mph in still water. The Lazy River flows at a speed of 0.8 mph. How long will it take Fran to swim
Elis [28]

Answer:

1.49 hrs or 1 hr and 30 minutes approximately

Step-by-step explanation:

if fran go 2.8m up then the river flow at a rate of 0.8m; the since we are taking the speed of fran and river to be constant. the ratio between their speed will always remain constant. that is if 0.8/2.8 = 0.286≈ this will be always constant.

so if he go up 4m then the horizontal length has to be 1.143 because 1.143/4 = 0.286.

now we find the distance between frans initial positon and final position. to find it we use pythagoras theorem.

\sqrt{(4^2 + 1.143^2)} =4.160 miles

to find the time divide distance traveled by speed;

4.160/2.8 = 1.49 hrs

7 0
3 years ago
Help me with this please
seropon [69]
Answer:
8x+y

Explanation:
3x+4y+5x-3y
Rearrange the terms so like terms are next to each other
3x+5x+4y-3y
Combine like terms
8x+y

I hope this helps!
7 0
3 years ago
Pls help fast. i need it fast. pls
miskamm [114]

Answer: Part A C x G = X

Part B it represents the cost

Step-by-step explanation:

3 0
2 years ago
Quick algebra 1 question for 10 points!
Mars2501 [29]

The factors of the given quadratic expression, 2x² - 4x - 16, are 2, (x +2), and (x -4)

<h3>Factoring a Quadratic expression </h3>

From the question, we are to determine the each of the factors of the given quadratic expression

The given quadratic expression is

2x² - 4x - 16

Factoring

2x² - 4x - 16

First, factor out 2

That is,

2(x² - 2x - 8)

Now, we will factor x² - 2x - 8
x² - 2x - 8

x² - 4x + 2x - 8

x(x - 4) +2(x -4)

(x +2)(x -4)

Thus,

2x² - 4x - 16  = 2(x +2)(x -4)

Hence, the factors of the given quadratic expression, 2x² - 4x - 16, are 2, (x +2), and (x -4)

Learn more on Factoring a quadratic expression here: brainly.com/question/52959

#SPJ1

6 0
1 year ago
Read 2 more answers
Can someone explain this to me? I'm not entirely sure this question has enough information to be solved. Thanks!
dedylja [7]

<u>Question</u><u> </u><u>1</u>

DC=AC-AD=20-16=4

<u>Question</u><u> </u><u>2</u>

By the geometric mean theorem,

BD^2 = (4)(16)=64 \\ \\ BD=8

<u>Question</u><u> </u><u>3</u>

By the Pythagorean theorem,

AB^2 = 8^2 + 16^2 \\ \\ AB^2 = 320 \\ \\ AB=8\sqrt{5}

<u>Question</u><u> </u><u>4</u>

By the Pythagorean theorem,

BC^2 = 8^2 +4^2 \\ \\ BC^2 = 80 \\ \\ BC=4\sqrt{5}

8 0
1 year ago
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