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3 years ago

12

Two gears in a machine are aligned by a mark drawn from the center of one gear to the center of the other. If the first gear has

teeth, and the second gear has teeth, how many revolutions of the first gear are needed until the marks line up again?

1 answer:

scoray [572]3 years ago

4 0

Answer:

The firstgear needs to make five revolutions in order for the marks to line up again.

Step-by-step explanation:

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If the factors of a quadratic function are (x + 2) and (x − 9), what are the x-intercepts of the function?

Zielflug [23.3K]

Answer: D. (-2,0) and (9,0)

Step-by-step explanation:

When you equate the factors to 0 you get

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Here the Y value is 0 as you find the factors of x when the Y value is 0.

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Answer:

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Step-by-step explanation:

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2 years ago

Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge

PIT_PIT [208]

Answer:

42.69% of information is acquired by the student in two weeks.

Step-by-step explanation:

We are given the following in the question:

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3 years ago

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andreev551 [17]

Answer:

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Step-by-step explanation:

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3 years ago

Please help answer this

saul85 [17]

Answer:

Option D.

Step-by-step explanation:

The given inequality is $y\le -2x-2$ .

To graph this inequality, we need to graph the corresponding linear equation;

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The intercepts are $(0,-2)$ and $(-1,0)$ .

Plot these two points and draw a solid straight line through them.

We then test the inequality with the point (0,0).

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This statement is false.

So we shade the lower half plane to obtain the graph in option D.

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3 years ago

Read 2 more answers