Lauren Petus paid $27 for a dress that was 10% off the list price. What was the list price of the dress?

Answers

Answer 1

Answer: $30

27/0.90=30
I think this is right sorry if it’s not

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10.2666667 as a fraction

Answers

I'm pretty sure that would be 10 13/50 after reducing.

There are nine balls. One is slightly lighter than the rest; the difference is small enough that you can't tell just by picking them up. Using a basic two-sided scale, what's the minimum number of times you'd need to weigh balls to guarantee you find the light one?

Answers

You will need to weight those balls only twice.You weight 6 balls, 3 on one side of weight and 3 on another, and other3 balls you have are in your hand.

Check picture bellow

just my thoughts:
this is assuming the rest of the balls are of equal weight.
put 4 and 4 on either side of the scale, if by some chance they end up equal then that means the one ball not on the scale is the lighter. (can switch out with another ball to confirm) and that will be 2 weighs by just luck.
systematically, the more likely case is that the lighter ball will be in the 8 you put on the scale, and it's lightness will cause one side to be higher. this means that the lighter ball is on the higher side.
then take the four balls from the higher side and put two and two back on the scale. again higher sides means lighter. then take those two and put one and one. you will then find the lightest ball.
this method will take 3 weighs

Find the absolute value. The absolute value of 5 is

Answers

Answer:

Step-by-step explanation:

you need to look at how far it is from a m=number line to find the absolute value

Answer:

Step-by-step explanation:

The reason it is 5, not -5, is because the absolute value can never be a negative number! Only positive. Remember that

Cheers! Hope you understand

Choose a number between 61 and 107 that is a multiple of 3 , 9 and 12

Answers

Let us simply find the least common multiple of 3, 9, and 12.

3 / 3 9 12
3 / 1 3 4
4 / 1 1 4
/ 1 1 1

LCM = 3 * 3 * 4 = 36

Let us multiply 36 by 2 = 36*2 = 72

So 72 is a multiple of 3, 9 and 12 and it is in between 61 and 107.

Use the elimination method to solve the system of equations. Choose the correct ordered pair. 3x - y = -1
3x + 3y = 27

Answers

6x-3y=27 --> 3*(2x-y = 9)
3x-y=13 Doesn't factor

Convert from radian measure to degree measure: 3pi

Answers

To convert from radians to degrees, always multiply by 180/pi

3pi*180/pi
The pi's cancel out and you are left with 3*180 or 540°

Hope this helps

There are 2 PI radians in 360 degrees, so 3 PI radians = 1.5 circles = 360 + 180 = 540 degrees

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