3 years ago

What is 3 examples of a rate?

1 answer:

5 0

Answer:

Step-by-step explanation: For example, if a 12 ounce can of corn costs 55 cents the rate is 55 cents for 12 ounces. The first term in ratio is measured in cents the second term in ounces

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Julie multiplies 6.27 by 7 and claims the product is 438.9. Explain without multiplying how you know Julie’s answer is not corre

vekshin1

This is because 7 x 6 is only 42 therefore julies answer is way too far off.

the real answer is 43.89

hope this helps you

4 0

3 years ago

If one dude has 22 cookies, and then he gets robbed every day for his cookies at a rate of 2 cookies per day, how many cookies d

jolli1 [7]

22-14= 8
He has 8 cookies at day 7.

4 0

3 years ago

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Want to learn symmetry?<br>

Zanzabum

Answer:

yea

Step-by-step explanation:

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3 years ago

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Consider the differential equation y'' − y' − 30y = 0. Verify that the functions e−5x and e6x form a fundamental set of solution

Alex Ar [27]

Answer:

Step-by-step explanation:

We have to take the derivatives for both functions and replace in the differential equation. Hence

for y=e^{-5x}:

$y(x)=e^{-5x}\\y'(x)=-5e^{-5x}\\y''(x)=25e^{-5x}\\$

for y=e^{6x}:

$y(x)=e^{6x}\\y'(x)=6e^{6x}\\y''(x)=36e^{6x}\\$

Now we replace in the differential equation y'' − y' − 30y = 0

for y=e^{-5x}:

$25e^{-5x}+5e^{-5x}-30e^{-5x}=0\\25+5-30=0$

for y=e^{6x}:

$36e^{6x}-6e^{6x}-30=0\\36-6+30=0$

Now, to know if both function are linearly independent we calculate the Wronskian

$W(f,g)=fg'-f'g$

$W(e^{-5x},e^{6x})=(e^{-5x})(6e^{6x})-(-5e^{-5x})(e^{6x})\neq 0$

I hope this is useful for you

Best regard

7 0

4 years ago

NEED HELP ASAP FOR THIS MATH . Consider the statement.

joja [24]

Answer:

false; Only square roots can result in irrational numbers. Subtraction of any two real numbers results in a rational number.

Step-by-step explanation:

Rational numbers in any operation with a rational number except square rooting will result in a rational number.

7 0

3 years ago