3 years ago

A substance has a volume of 20 mL and a density of 2.5 g/mL. What is its mass? (4 points)

Mathematics

1 answer:

Lemur [1.5K]3 years ago

8 0

Answer:

M=50 grams

Step-by-step explanation:

D=M/V

DxV=M

2.5x20=50

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kherson [118]

B. 4: for x-4
D. -6: for x-6

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2 years ago

What is the slope of the line between (−4, 4) and (−1, −2)? (1 point)

SCORPION-xisa [38]

The slope of the line is -2.

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3 years ago

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Jason knows that the equation to calculate the period of a simple pendulum is , where T is the period, L is the length of the ro

Brrunno [24]

<u>Answer-</u>

$\boxed{\boxed{L=\dfrac{g}{4\pi^2 f^2}}}$

<u>Solution-</u>

The equation for time period of a simple pendulum is given by,

$T=2\pi \sqrt{\dfrac{L}{g}}$

Where,

T = Time period,

L = Length of the rod,

g = Acceleration due to gravity.

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$f=\dfrac{1}{T}\ \Rightarrow T=\dfrac{1}{f}$

Putting the values,

$\Rightarrow \dfrac{1}{f}=2\pi \sqrt{\dfrac{L}{g}}$

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3 years ago

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If John makes $20 an hour, how long will it take him to make $140?

Len [333]

For 1 hour, money = $20
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So, option C is your final answer.

Hope this helps!

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3 years ago

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bonufazy [111]

Answer:

Sine 30 =

$\frac{1}{2}$

Sine 45 =

$\sqrt{ \frac{2}{2} }$

Sine 60 =

$\sqrt{ \frac{3}{2} }$

Cos 30 =

$\sqrt{ \frac{3}{2} }$

Cos 45 =

$\sqrt{ \frac{2}{2} }$

Cos 60 =

$\frac{1}{2}$

Tan 30 =

$\sqrt{ \frac{3}{3} }$

Tan 45 =

$1$

Tan 60 =

$\sqrt{3}$

Step-by-step explanation:

I hope it helps

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