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lana66690 [7]
3 years ago
5

Solve: -14/7 + -6 + 5(-2)

Mathematics
1 answer:
mestny [16]3 years ago
6 0

Answer:

-18

Step-by-step explanation:

I hope that helps! Its in the picture

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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

You have found 24 nickels.

7 0
3 years ago
I need help please will mark you as brainliest
Whitepunk [10]

Answer:

178 correct problems

Step-by-step explanation:

turn the percentage into a decimal (0.89) and multiply it by the number of questions

8 0
3 years ago
Read 2 more answers
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Eva8 [605]

Answer:

rationalize my skill capability

Step-by-step explanation:

7 0
3 years ago
.31 is what in a fraction
GREYUIT [131]
0.31 = 31%
% is out of 100 so 31% is 31 out of 100 which is 31/100 :)
3 0
3 years ago
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Order the decimals from least to greatest...
PtichkaEL [24]

Answer:

-1.5

-0.75

0.25

2

2.250

Hope this helps!!

6 0
3 years ago
Read 2 more answers
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