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VMariaS [17]
3 years ago
7

jenny had some candy to give to her three children she first took nine pieces for herself and then evenly divided the rest among

her children. Each child recived three pieces with how many pieces did she start
Mathematics
1 answer:
Airida [17]3 years ago
3 0

Answer:18

Step-by-step explanation: She gave 3 children 3 pieces each. 3*3=9. She also took 9 pieces for herself. 9+9=18

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During a concert, $3280 was received. A total of 760 people attended. Reserved seats were $6 and general admission seats were $4
Andre45 [30]

Answer:

The number of reserved seat is 120 and number of general seat is 640.

Step-by-step explanation:

Given,

Total number of seats = 760

Total collected Money = $3280

Solution,

Let the total number of reserved seat be x.

And  the total number of general seat be y

Hence total number of seats is the sum of total number of reserved seat and  the total number of general seats.

So the equation can be written as;

x+y=760\ \ \ \ equation\ 1

Again, total money collected is the sum of fees of one reserved seat times total number of reserved seat and fees of one general seat times the total number of general seats.

So the equation can be written as;

6x+4y=3280\ \ \ \ \ equation\ 2

Now, multiplying equation 1 by 4 and then subtract it from equation 2.

4x+4y=3040

(6x+4y)-(4x+4y)=3280-3040\\\\2x=240\\\\x=\frac{240}{2}=120

On substituting the value of x in equation 1, we get;

x+y=760\\120+y=760\\y=760-120=640

Thus the number of reserved seat is 120 and number of general seat is 640.

8 0
3 years ago
Rewrite this expression using a positive exponent.<br> -7<br> 5
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Answer:

1/5^7

Step-by-step explanation:

5 0
3 years ago
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The quantities x and y are proportional. Find the constant of proportionality r in the equation y = rx
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Answer:

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Step-by-step explanation:

To solve this, we can plug in a pair of x and y values and solve for r.

y = rx | Plug in a pair

42 = r*6 | Now divide both sides by 6

7 = r.

We can test this by plugging in r with a pair.

y = (7)x

77 = 7*11, 77 = 77, This equation is correct.

7 0
3 years ago
Read 2 more answers
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