Please help with representing algebraic relationships in tables and graphs

Mathematics

1 answer:

Slav-nsk [51]3 years ago

7 0

1 radios: 24, 22, 20, 18, 16, 14, 12
2. hours independent, radios dependent
3. (0, 24); (2, 22); (4, 20); (6, 18); (8, 16); (10, 14); (12, 12)
4. 2 radios sold 2 hours
5. goes down by 2
6. n = -h + 24
7. the amount is decreasing every hpur

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One number is 2 more than 3 times another. Their sum is 22. Find the numbers.

ivolga24 [154]

Make a system of equations.

$\sf~x=3y+2$
$\sf~x+y=22$

Re-arrange the 2nd equation:

$\sf~x+y=22$

Subtract y to both sides:

$\sf~x=-y+22$

Plug in -y + 22 for 'x' in the first equation.

$\sf~x=3y+2$

$\sf~-y+22=3y+2$

Subtract 3y to both sides:

$\sf~-4y+22=2$

Subtract 22 to both sides:

$\sf~-4y=-20$

Divide -4 to both sides:

$\sf~y=\boxed{\sf5}$

Plug this into any of the two equations to find 'x':

$\sf~x+y=22$

$\sf~x+5=22$

Subtract 5 to both sides:

$\sf~x=\boxed{\sf17}$

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3 years ago

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Answer:

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Picture attached.....

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3 years ago

ratelena [41]

Amount Financed: $2,650
Finance Charge: $484.69
Number of Payments: 36

(Finance Charge)/(Amount Financed)*100$=($484.69)/($2,650)*100$
(Finance Charge)/(Amount Financed)*100$=(0.1829)*100$
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In the row of number of Payments 36, we look for:
(Finance Charge)/(Amount Financed)*100$=$18.29, and we see to which annual porcentage rate it corresponds in the first row

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IRINA_888 [86]

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4 years ago