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3 years ago

7

Use the order of operations to simplify the following expression.

1 answer:

Aneli [31]3 years ago

7 0

We know the order of operations, right? PEMDAS
Parenthesis
Exponents
Multiplication
Division
Addition and
Subtraction.
So, by using the order of operation, it would come out to:
-24
But I don't see that as an answer choice... a typo maybe? :) Hope this helps anyways!

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Step-by-step explanation:

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Cos (A+B) =1/5<br>COS (A-B) = 3/5<br>Then find tan (A-B)

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PWEASE HELP ASAP my friends and I cant figure this out I'm hoping one of u guys can

Degger [83]

The number of viruses was 4000 times greater than number of protozoa.

Step-by-step explanation:

Given,

Number of protozoa = $5*10^5$

Number of viruses = $2*10^9$

Let,

x be the number of times number of viruses is greater than number of protozoa.

Number of viruses = Number of time * Number of protozoa

$2*10^9=(5*10^5)x$

Dividing both sides by $5*10^5$

$\frac{2*10^9}{5*10^5}=\frac{(5*10^5)x}{5*10^5}\\\\4*10^3= x\\x=4*10^3 \\x=4000$

The number of viruses was 4000 times greater than number of protozoa.

Keywords: division, scientific notation

Learn more about division at:

#LearnwithBrainly

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