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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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Yuliya22 [10]

Answer:

all i know is that r=7

Step-by-step explanation:

14 is circumference

r= 1/2 of circumference

therefore r=7

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3 years ago

Order these numbers from least to greatest.<br> 2.2, 2.1021, 2.104, 2.12

bogdanovich [222]

2.1021, 2.104, 2.12, 2.2

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2 years ago

Read 2 more answers

Differentiating Exponential Functions In Exercise, find the derivative of the function.<br> y = x2ex

I am Lyosha [343]

Answer:

$y' = xe^{x}(2 + x)$

Step-by-step explanation:

If we have a product function y, in the following format

$y = f(x)*g(x)$

This function has the following derivative

$y' = f'(x)*g(x) + g'(x)*f(x)$

In this problem, we have that:

$y = x^{2}e^{x}$

$f(x) = x^{2}, f'(x) = 2x, g(x) = e^{x}, g'(x) = e^{x}$

The derivative of the function is:

$y' = f'(x)*g(x) + g'(x)*f(x)$

$y' = 2xe^{x} + x^{2}e^{x}$

$y' = e^{x}(2x + x^{2})$

$y' = xe^{x}(2 + x)$

8 0

2 years ago

Which expresion is equivalent to -5 -(-7)?<br> HURRY 20 POINTS

grigory [225]

Answer:

<h2>2 (the answer should have a positive sign.)</h2><h2>The equivalent to -5-(-7) is -5+7.</h2>

Step-by-step explanation:

To solve this problem, use the order of operations.

PEMDAS

Parentheses

Exponents

Multiply

Divide

Add

Subtract

$\sf{-5-(-7)=-5+7}$

$\sf{-5+7}$

Add or subtract.

Solve.

$-5+7=2$

$\large\boxed{2}$

So, the correct answer is 2.

3 0

2 years ago

Find two pairs of integers whose sum is -6

Norma-Jean [14]

There are many pairs of integers (whole numbers) that equal -6.

1 + 5
2 + 4
3 + 3
-3 + 9

You can choose from any of those pairs.

6 0

3 years ago