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3 years ago

I don't remember how to do this

Mathematics

1 answer:

meriva3 years ago

4 0

B. Fractions have to have the same denominator so $\frac{9}{10} - \frac{2}{5} = \frac{9}{10} - \frac{4}{10}$ which = $\frac{5}{10}$ then you simplfy it to $\frac{1}{2}$ so it would be B

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Is 3x^3-12x a difference of squares

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3 years ago

3/16 x 6 in the simplest form

SIZIF [17.4K]

Answer:

9/8

Step-by-step explanation:

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2 years ago

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Please help it an emergency and I give Brainiest.

notsponge [240]

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A 12-tooth gear on a motor shaft drives a larger gear having 42 teeth. If the motor shaft rotates at 700 rpm, what is the spee

nata0808 [166]

Answer:

203 rpm

Step-by-step explanation:

The speed of the larger gear can be calculated using the following equation:

$v = \omega*R$

<u>Where</u>:

ω: is the angular velocity of the motor = 700 rpm

R: is the gear ratio

The gear ratio is the following:

$R = \frac{n_{(a)}}{n_{(b)}}$

<u>Where:</u>

n(a): is the number of teeth on the small gear = 12 teeth

n(b): is the number of teeth on the larger gear = 42 teeth

The gear ratio is:

$R = \frac{12}{42} = 0.29$

Now, the speed of the larger gear is:

$v = \omega*R = 700 rpm*0.29 = 203 rpm$

Therefore, the speed of the larger gear is 203 rpm.

I hope it helps you!

3 0

3 years ago

Which is greater 21.798 or 217.98?

Mazyrski [523]

Answer:

the second number is greater i think

Step-by-step explanation:

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2 years ago

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