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3 years ago

Eddy remembers that the number of a student who liked vanilla was 1/5 of the number who liked almond

1 answer:

8 0

I don't really understand this question. But I'll do my best to answer it.
So say that one student liked vanilla, and that student was 1/5 out of kids who liked almond. If that student was the only one out of five students that didn't like vanilla and liked almond, then four more students liked almond, and that one student was left out. So Eddy was right??????

Again, I don't understand what answer you want. Sorry. :/

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What is the following quotient?

seropon [69]

Answer: Choice B) $\frac{5\sqrt{11}+5\sqrt{3}}{8}\\\\$

==========================================

Work Shown:

$\frac{5}{\sqrt{11}-\sqrt{3}}\\\\\\\frac{5(\sqrt{11}+\sqrt{3})}{(\sqrt{11}-\sqrt{3})(\sqrt{11}+\sqrt{3})}\\\\\\\frac{5\sqrt{11}+5\sqrt{3}}{(\sqrt{11})^2-(\sqrt{3})^2}\\\\\\\frac{5\sqrt{11}+5\sqrt{3}}{11-3}\\\\\\\frac{5\sqrt{11}+5\sqrt{3}}{8}\\\\\\$

This shows why choice B is the answer.

---------------

Explanation:

In the second step, I multiplied top and bottom by $(\sqrt{11}+\sqrt{3})$
This is so we can apply the difference of squares rule in step 3. The difference of squares rule is (x-y)(x+y) = x^2-y^2.
In step 4, the square roots cancel out with the squaring operation. The two operations are inverses of one another, which is why they cancel.

So in general, if the denominator is $\sqrt{a}-\sqrt{b}$ and you want to rationalize the denominator, then you should multiply top and bottom by $\sqrt{a}+\sqrt{b}$ . The same applies in reverse as well.

This leads to the denominator becoming $(\sqrt{a}-\sqrt{b})(\sqrt{a}+\sqrt{b}) = (\sqrt{a})^2-(\sqrt{b})^2 = a-b$

Keep in mind that $a \ge 0$ and $b \ge 0$

4 0

3 years ago

200/40+15 = ?? helpp mee ^^

wel

Answer:20 ^v^ Please follow me

Step-by-step explanation:

200/40=5

5+15=20

5 0

3 years ago

Read 2 more answers

1/3(m-1)=-5 Please help

dezoksy [38]

Answer:

m=-14 I hope this helps u

Step-by-step explanation:

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3 years ago

7TH GRADE MATH- Please solve the one with the star- question 18. Thank you!

Bogdan [553]

Answer:

27.5 pages per hour.

Step-by-step explanation:

Santino read 5 $\frac{1}{2}$ pages in 12 minutes

In 60 minutes he read:

$\frac{60}{12}$ × 5.5 = 27.5 pages

5 0

3 years ago

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER. Find the area of t

dem82 [27]

Answer:

easy 230-80 which is 150 so imagine a triangle with base 150 and hight 130-60=70 so times for area 150×70÷2 because it's triangle which is 5250 so plus that with 130x80 for rectangle which is 10400 and add so it's 15650

8 0

2 years ago

Read 2 more answers