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ser-zykov [4K]
3 years ago
6

A music store bought a CD set at cost of $20. When the store sold the CD set, the percent markup was 10% what is the selling pri

ce
Mathematics
1 answer:
vovikov84 [41]3 years ago
3 0
Selling price is $22
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My teacher didn’t really teach this and um how do I do this
Lorico [155]

Answer:


Step-by-step explanation:

1. 3.8 x 10^5 + 5.5 x 10^5 = 930,000 or 9.3 x 10^5

You just have to solve the equation and shorten the answer. For number one the answer is 930,000, so you have to make it into a number with decimals since a scientific notation number can not be equal to 10 or be greater. So you have to round the number to 9.3 not 93. To "round" it to 9.3 you have to move the decimal at the end of 930,000 to be in between the numbers 9 and 3. How many times you move the decimal to the left or right, that is the exponent of 10. So for 930,000 you moved the decimal 5 times to the left so the exponent for 10 is positive 5.

6 0
3 years ago
Simplify 5y^2 + 5y + 5y + 5x^2.
Ierofanga [76]

Answer:

5y^2 + 10y + 5x^2

Step-by-step explanation:

there's only two like terms that can be combined.

4 0
3 years ago
Look at the right triangle shown below. Which of the folllowing could not be the triangle’s dimensions?
Naily [24]

Answer:

5,12,13

Step-by-step explanation:

The sides are almost close for the distance and so 5 doenst go with 12 and 13, its too small. For dimensions while the other numbers are close to being related. Do you know what I mean?

Hope this helped a little tho!

4 0
2 years ago
PLEASE HELP ANSWER 4 AND 5.
kumpel [21]

4) The ratio of lemons to cups of sugar = 2/3 or 2:3

5) The ratio of cups of sugar to cups of water = 3/14 or 3:14

Hope that helps

8 0
3 years ago
What’s the answer? Thank You
AlladinOne [14]
33 square inches --> straight line across
25 square inches --> straight line across
6 0
3 years ago
Read 2 more answers
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