Help please T-T i give brainliest dramatic-c o u g h s Im DyInG pLeAsE

Mathematics

2 answers:

harkovskaia [24]3 years ago

7 0

Answer:

ill give a guess because I cant read it

allsm [11]3 years ago

6 0

hello since you go the answer im just gonna write this

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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

Between which two thousands is the number 36,219

Anastasy [175]

32,000 and 42,000. I know this because the question states "Two Thousands." 32,000 and 42,000 are both two thousands because 32 and 42 both end with 2's because of the "Two" in "Two Thousand."

4 0

4 years ago

Read 2 more answers

Please help this is worth a lot of my grade:(

Ede4ka [16]

Answer:

Step-by-step explanation:

$a_n=-3n+50\\ \\ a_{15}=-3(15)+50\\ \\ a_{15}=-45+50\\ \\ a_{15}=5$