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NNADVOKAT [17]
3 years ago
11

75 dollars every day for 5 days in how much money a week?

Mathematics
2 answers:
Hatshy [7]3 years ago
4 0

Answer:75*5= 375

Step-by-step explanation:

Morgarella [4.7K]3 years ago
3 0
$375 for 5 days but it’s $525 for 7 days
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If 50% of a number is 170 and 85% of the same number is 289, find 35% of that<br> number.
kupik [55]

The answer to it is 119

since 50% of the number is 170 just multiply 170 by 2 to get 340, then find 35% of 340. 10% of 340 is 34, multiply 34 by 3.5 to get 119.

4 0
1 year ago
Solve the following three variable system.
Ket [755]
1)\ \ \ 2x + 3y + 4z = 9\\2)\ \ \ -x + 2y - z = 0\\3)\ \ \ -2x + 4y + z = 3\\===================================\\3)\ \ \ -2x + 4y + z = 3\ \ \ \Rightarrow\ \ \ z=2x-4y+3\\\\1)\ \ \ 2x + 3y + 4z = 9\ \ \ \Rightarrow\ \ \ 2x + 3y + 4(2x-4y+3) = 9\\2x+3y+8x-16y+12=9\\10x-13y=-3\\\\2)\ \ \ -x + 2y - z = 0\ \ \ \Rightarrow\ \ \ -x+2y-(2x-4y+3)=0\\-x+2y-2x+4y-3=0\\-3x+6y=3\ /:(-3)\\x-2y=-1\ \ \ \Rightarrow\ \ \ x=2y-1\\\\

1)\ \ \ 10x-13y=-3 \ \ \ \Rightarrow\ \ \ 10(2y-1)-13y=-3\\20y-10-13y=-3\\7y=7\ /:7\ \ \ \Rightarrow\ \ \ y=1\\\\2)\ \ \ x=2y-1\ \ \ \Rightarrow\ \ \ x=2\cdot2-1=1\\\\3)\ \ \ z=2x-4y+3\ \ \ \Rightarrow\ \ \ z=2\cdot1-4\cdot1+3=2-4+3=1\\\\Ans.\ x=y=z=1
6 0
3 years ago
David bought a computer that was 25% off the regular price of $1,080. If an8% sales tax was added to the Cost of the computer wh
Alex

Answer:

$878.80

Step-by-step explanation

Multiply 1080 by 0.25 for the 25% which then should equal $810. 810 times 0.08 would equal 64.8. Add the 64.8 to the 810 and it should be $874.80. Hope it helps and is not wrong. :)

6 0
2 years ago
Enter numbers into the table so that the paired values are in a proportional relationship.
valentina_108 [34]
The answer are 5 and 4
4 0
3 years ago
Read 2 more answers
Oleg ran 8.8 miles in 1 hour and 20 min. Assuming he continues at a constant rate ,how long will it take him to run any number o
hammer [34]

Calculate his running rate in miles per hour:-

1 hour and 20 minutes = 4/3 hours.

His mph = 8.8 / 4/3 = 8.8 * 3/4 = 6.6 mph

Time = distance / rate

Time to run any number of miles ( n miles) = n / 6.6


5 0
3 years ago
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