At the ABC Electronics Store, a laptop computer was marked down 15% from its original price of $900. A store employee gets an additional 20% discount on the already marked-down price. How much does the employee pay for the laptop computer?

Answers

Answer 1

Answer: The answer is $612. You have to times by 0.85, then times by 0.8

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Alexander found the means-to-MAD ratio of two data sets to be 3.4.What can he conclude about the distributions?

A.
They are similar.

B.
They are somewhat similar.

C.
They are different.

D.
They are identical.

Answers

Answer:

It is given that ratio of Means to Mean absolute deviation(MAD) of two data sets are 3.4.

Mean is sum of all the observation divided by number of observation.

MAD can be calculated by

1. Find the mean of the data set.

2. Subtract each value of data set from the mean,and take the modulus value.

3. Find the mean of new data set.

Now, consider the two data sets.

A={2,4,6,8,10}

B={6.8,13.6,20.4,27.2,34}

The two data set , have ratio of means to MAD is equal to 3.4.

Which shows, that two data set are different.

Option (C) : They are different is true.

C. They are different.

A number cube is rolled. What is the probability of rolling 2, 3, or 5?PLEASE HELP!!!!!

Answers

Since there are six sides of a cube, or a die, the probability of rolling a 2 is 1/6. In the same way, the probability of getting a 3 is 1/6 and getting a 5 is also 1/6. Hence, the probability of rolling 2, 3 or 5 is the sum of all the probabilities each number can be rolled. That is P = 1/6 + 1/6 + 1/6 which is 3/6 or 50%. There is a 50% chance that the number rolled is 2, 3, or 5.

The probability of rolling any one of these numbers is 1/6, which converted in to percentage is 16.6%. The probability of rolling any two of these numbers is 2/6 which converted in to percentage is 33.3%. The probability of rolling all 3 of these numbers is 3/6, which converted in to a percentage is 50%. Hope it helps:).

Dmitri wants to cover the top and sides of the box shown with glass tiles that are 3 5 mm square How many tiles does he need 20 cm 15 cm

Answers

lets split the box in pieces and then add:
top = 20*15 = 300
sidesA = 2*20*9 = 360, is multiplied by 2 cause there are 2 sides like this
sidesB = 2*9*15 = 270, is multiplied by 2 cause there are 2 sides like this
so in total we have:
total = 300 + 360 + 270 = 930 cm^2
if we express this quantity in mm^2 we have:
1cm² = 100 mm²total = 930*100 = 93000 mm^2
so if the tiles are 5 mm^2 we need:
total tiles = 93000/5 = 18600
we need 18600 tiles of 5 mm^2

What is the approximate perimeter of a semicircle with a radius of 9mm? Use pi as 3.14.
Express your final answer to the nearest hundredth.

Answers

Act like it's a whole circle and find the perimeter, then divide by 2.

P = 2 * pi * r

P = 2 * 3.14 * 9

P = 56.52

Now divide by 2:

P = 28.26

Answer:

I took the test and the answer is 46.26.

Step-by-step explanation:

Round 8.54 to nearest tenth

Answers

If you look at the image below, you can find what the tenths place is.
Juts follow the rule: 5 or more raise the score, 4 or less stay and res(t)
Therefore 8.54 would raise to 8.5 Since the four is lower than five, it rounds down.
~Hope this helped :)

If the last number is less than 5, you will not round the number next to it, if the number is more than 5 or 5, you'll round
So the answer to this question is 8.5

A $1500 loan has an annual interest rate of 4 1/4% on the amount borrowed. How much time has elapsed if the interest is now $127.50?

Really need this please explain some work too. Thx!

Answers

127.50 = 1,500(0.0425) * x

127.50 = 63.75 * x

x= 127.50/63.75

x=2

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