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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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A local tree farm is donating 50 trees. The students will plant some of the trees at the school and the rest at the library.

Alex17521 [72]

Answer:

6

Step-by-step explanation:

First you know they have <em>50 </em>trees. Then, you know <em>3</em> of <u>25</u> will die.

<u>25</u>*<u>2</u>=<em>50</em>. <em>3</em>*<u>2</u>=6.

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2 years ago

A cube made of an unknown material has a height of 9 cm. The mass of this cube is 3.645 grams. What is the density of this cube?

ehidna [41]

Answer:

$density = \frac{mass}{volume}$

mass = 3.645 g

volume = 9×9×9

= 729 cm³

density = 3.645/729

= 0.005 gcm^-3

Step-by-step explanation:

the volume is 729 cm³ cause the given height is 9cm and it is a cube. cube has equal sides so their lengths are the same.

volume = length × height × width

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2 years ago

Find the value of x. If necessary, write your answer in simplest radical form. 30 x 25 x nothing (Simplify your answer. Type a

murzikaleks [220]

Answer:

x = 38.05

Step-by-step explanation:

Using the Pythagoras theorem to find x

x is the hypotenuse

The other sides are opposite and adjacent

x² = 30²+25²

x² = 900+625

x² = 1525

x = √1525

x = 39.05

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2 years ago

Aşağıda verilen balik kılçığı diyagramını tamamlayalım.<br>

oee [108]

Answer:

Let's complete the fishbone diagram given below

thats what they said

Step-by-step explanation:

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2 years ago

-4(5x)=12 is it true false or open?

Ipatiy [6.2K]

False if that's what you're asking

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2 years ago

Read 2 more answers