Guys please help with this::::there is a picture so please look and help!

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Answer 1

Answer: The mechanical pencils are .89¢ and pens .35¢, so the difference is .54¢

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Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease.Increasing 20 to 40 is the same as increasing 20 by c. So, it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by one-half of c. So, it is a 50% decrease.
I don't understand how to fill in the blanks.

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I believe the answer you are looking for is:

Increasing 20 to 40 is the same as increasing 20 by 20 (or itself), so it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by 1/2 or by 20. So it is a 50% increase.

Basically, when going from 20 to 40, the number is being doubled, and when youre going from 40 to 20 you are cutting the number in half.

Answer:

The first blank is 20 and the second is actually 40

Step-by-step explanation:

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Question 4, I give thanks and 5 stars so you get more points :p Worth 15 pointsA cooler contains 5 bottles of orange juice, 6 bottles of apple juice, and 4 bottles of grape juice.

a. Janice randomly selects a bottle from the cooler. Then David randomly selects a bottle from the cooler. What is the probability that both Janice and David will select orange juice? Express your answer as a percent. Show your work.
b. Assume that both Janice and David selected orange juice. After drinking these juices, Janice and David randomly each pick another bottle from the cooler. What is the probability that neither will pick grape juice? Show your work and write your answer as a percent.

Answers

A) 5+6+4=15, so the chance that they will both get orange juice is 2/15
B) 15-2=13, so the chances that neither of them will pick grape juice is 6.5%

I think this is right, but you might want to check it if anyone else answers because I havn't done this in maths for a while.

Since gkitten wasn't sure I'll attempt this too.

a) Assuming that the bottles are not replaced from the fridge each time:
5+6+4=15
So 5/15 x 4/14 = 2/21
2/21 x 100 = 9.524%

b) So now there are only 13 bottles in the fridge:
4/13 x 3/12 = 1/13
1/13 x 100 = 7.692%

Hope I helped.

Write each fraction as a percentage

Answers

Hi there!

To convert a fraction to a percentage you need to first convert the fraction to a decimal number. To convert a fraction to a decimal number you need to treat the fraction like a division problem.

$(1)/(3)$ as a division problem would be 1 divided by 3, which is:

1 ÷ 3 = 0.3333333...

Now to covert a decimal to a percent all you do is move the decimal point over to the hundreds place, so it will look like this:

33.3

I will be rounded down because it is less then 5. Now just add a percent sign on the end and that is your answer! I should look like this:

33.3%

Your friend, ASIAX

1.3 I think cause that's a percentage

1. Is y = -x - 1 quadratic? Explain.

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No because the formula for a quadratic equation is ax^2+bx+c=0
This is a linear equation however.
Hope this helps

The hands on the clock represent rays. at 6, these rays form opposite rays. this means they form a

Answers

This mean they would form a 12

A square has a perimeter of 20 cm what is the length of its diagonal rounded to the nearest tenth

Answers

-- All 4 sides of a square are the same length.
   The perimeter is 20 cm.
   So each side is (20/4) = 5 cm.

-- If you cut the square along its diagonal, and throw one piece away ...

   You have a right triangle.
   The legs are sides of the square ... 5 cm each.
   The hypotenuse is the diagonal of the square, which you have to find.

-- The (hypotenuse of any right triangle)²

   = (the length of one leg)² + (the length of the other leg)² .

   (Diagonal)² = (5 cm)² + (5 cm)²

   (Diagonal)² = (25 cm²) + (25 cm²)

   (Diagonal)² = (50 cm²)

   Diagonal = √(50 cm²) = 7.07 cm

   or 7.1 cm rounded to the nearest tenth.

multiply the length of one side by the square root of 2.

20√2 = 28.28
Rounded to the nearest tenth:
28.28→28.3

28.3 is the final answer

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