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3 years ago

Which algebraic expression represents “twice the sum of y and 9”

Mathematics

2 answers:

Aleksandr [31]3 years ago

8 0

2(y+9) is the algebraic expression.

Hope this helps!!

tankabanditka [31]3 years ago

3 0

To answer this question we will have to keep the following two points in mind:

#1. The sum of a number with another number means to add the given two numbers.

#2. Twice means to multiply by 2. In other words it means to double.

Therefore, "twice the sum" would mean to multiply the sum by 2.

Now, in our question we will have, "the sum of y and 9 would be: $y+9$ and twice this sum would be: $2(y+9)$

Thus, "twice the sum of y and 9" is: $2(y+9)$

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Step-by-step explanation:

Your question isn't complete but let me help out based on the information given.

Joshua's recipe for chili requires 2 3/4 pounds of beef. Sondra's recipe for chili requires 2 2/3 pounds of beef.

The pounds of beef required by both of them will be:

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Answer:

Proof in explanation.

Step-by-step explanation:

I'm going to attempt this by squeeze theorem.

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By squeeze theorem, if $-x^4 \le x^4 \cos(\frac{2}{x}) \le x^4$

and $\lim_{x \rightarrow 0}-x^4=\lim_{x \rightarrow 0}x^4=L$ , then we can also conclude that $\im_{x \rightarrow} x^4\cos(\frac{2}{x})=L$ .

So we can actually evaluate the "if" limits pretty easily since both are continuous and exist at $x=0$ .

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Some people call this sandwich theorem.

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