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2 years ago

3. I am collecting baseball cards. My goal before I turn 18 is to have 500 cards. When I tumed 10,

1 answer:

vladimir2022 [97]2 years ago

7 0

Based on the scenario given, the equation to describe the situation will be: c + 125 + 89 = 500 and 286 cards need to be collected.

Number of cards given by grandfather = 125 cards

Number of cards that will be given by father = 89 cards

Therefore, based on the information given, the equation to describe the situation will be:

c + 125 + 89 = 500

Therefore, we can then use the equation to calculate the number of cards that need to be collected. This will be:

c + 125 + 89 = 500

c + 214 = 500

c = 500 - 214

c = 286

Therefore, the person needs to collect 286 cards.

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Answer:

n=946 and n=947

Step-by-step explanation:

n + (n+1) = 1893.

2n + 1 = 1893.

2n + 1 - 1 = 1893 - 1.

2n = 1892

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2 years ago

F(n)=-4n-3; find f(-1)

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Determine the slope intercept form of the linear equation from its graph.

Vlad1618 [11]

Given:

The graph of linear function.

To find:

The slope intercept form of the linear equation from the given graph.

Solution:

The slope intercept form of a linear function is:

$y=mx+b$

From the given graph it is clear that the graph passes through the points (1,300) and (4,800).

The equation of line is

$y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)$

$y-300=\dfrac{800-300}{4-1}(x-1)$

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$y-300=\dfrac{500}{3}x-\dfrac{500}{3}$

Adding 300 on both sides, we get

$y=\dfrac{500}{3}x-\dfrac{500}{3}+300$

$y=\dfrac{500}{3}x+\dfrac{900-500}{3}$

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Therefore, the required equation is $y=\dfrac{500}{3}x+\dfrac{400}{3}$ .

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2 years ago

In a survey of 2957 adults, 1455 say hey have started paying bills online in the least year construct a 99% confidence interval

Vikki [24]

Answer: 0.49 ± 0.0237

Step-by-step explanation: A interval of a 99% confidence interval for the population proportion can be found by:

$p_{hat}$ ± z. $\sqrt{\frac{p_{hat}(1-p_{hat})}{n} }$

$p_{hat}$ is the proportion:

$p_{hat}$ = $\frac{1455}{2957}$

$p_{hat}$ = 0.49

For a 99% confidence interval, z = 2.576:

0.49 ± 2.576. $\sqrt{\frac{0.49(1-0.49)}{2957} }$

0.49 ± 2.576. $\sqrt{\frac{0.49*0.51}{2957} }$

0.49 ± 2.576.(0.0092)

0.49 ± 0.0237

For a <u>99% confidence interval</u>, the proportion will be between 0.4663 and 0.5137 or 0.49 ± 0.0237

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2 years ago

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Answer:

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