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Tatiana [17]
3 years ago
9

an electronic store had a 20% off sale. If a stareo originally cost $125, how much did the stareo cost during the sale?

Mathematics
1 answer:
spayn [35]3 years ago
6 0

Answer:

100

Step-by-step explanation:

You multiply 125 by 0.80.  This is because 125 is the original amount nd to find out how much you have to pay, you would subtract 20% from 100% to get 80%.  Now, you know that you have to pay for 80% of the stereo.  In order to multiply the two numbers together, you have to convert 80% to a decimal which is 0.80.  Lastly, you multiply to get 1oo.  Therefore, the stereo costs $100.00 during the sale.

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The sum of the measures
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Answer:

x = 44°

Step-by-step explanation:

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4x + 4 = 180

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x = 44°

8 0
1 year ago
You and your friend play a game. You answer 80% of the questions correctly and your friend answers 0.60 of the questions correct
bezimeni [28]

Answer:

5

Step-by-step explanation:

Assuming both players can answer the same question, the minimum number of questions is the smallest number that when multiplied by either 0.60 or 0.80 yields a whole number.

Let x be the number of questions, solving by trial and error:

if\ x=2\\x*0.8=1.6\\x*0.6=1.2\\\\if\ x=3\\x*0.8=2.4\\x*0.6=1.8\\\\if\ x=4\\x*0.8=3.2\\x*0.6=2.4\\\\if\ x=5\\x*0.8=4\\x*0.6=3\\\\

Therefore, the minimum number of questions in the game is 5.

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3 years ago
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KengaRu [80]

Answer:

(9.6x10^9)-(8.9x10^9) = 7×10^8

Step-by-step explanation:

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3 years ago
A water park sold 8 child tickets and 72 adult tickets. What percentage of the tickets sold were child tickets?
Alex17521 [72]

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3 years ago
3y-x=3 and x is four times the value of y what is the value of x-y?
Aleonysh [2.5K]

Answer:

x - y = -9

Step-by-step explanation:

from the equation

3y - x = 3

and x is four times the value of y

i.e  x = 4y

put x  = 4y into the first equation

we have;

3y  - 4Y = 3

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therefore x - y = -9

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