A copy machine can print 360 copies every 4 minutes. How many copies can it print in 12 minutes?

Mathematics

2 answers:

Karolina [17]3 years ago

6 0

Answer:

1080 copies in 12 minutes

Step-by-step explanation:

12 divided by 4 = 3

so, 360 x 3 = 1080

worty [1.4K]3 years ago

4 0

Answer:

1080

Step-by-step explanation:

All you have to do is simple multiply

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17/7=3x + 2(5) / 3x - 2(5)

Lana71 [14]

The answer is: x = 261/133

8 0

3 years ago

You find 72 coins consisting only of nickels, dimes, and quarters, with a face value of $10.20. However, the coins all date from

Oliga [24]

Answer:

You have found 24 nickels.

Step-by-step explanation:

Let N be the number of nickles, D be the number of dimes and Q be the number of quarters. The number of coins and their face values are given by the following expressions, respectively:

$N+D+Q=72\\0.05N+0.10D+0.25Q=10.20$

As of now we have three variables and two expressions, the final expression needed to solve the linear system is given by the amount offered by the coin dealer:

$10N+20D+15Q=1,060$

Solving the linear system:

$N+D+Q=72\\5N+10D+25Q=1,020\\10N+20D+15Q=1,060\\\\10N-10N+20D-20D+15Q-50Q=1,060-(2*1,020)\\-35Q=-980\\Q=28\\\\5N-10N+10D-10D+25Q-10Q=1,020-720\\-5N+15Q=300\\-5N=300-(15*28)\\N=24$