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Arada [10]
3 years ago
14

Determine which of the following situations models a unit rate of $0.75. Select all situations that apply.

Mathematics
1 answer:
timurjin [86]3 years ago
4 0

Hello! :) The answers that I got was <span>Bottled water is on sale this week for a rate of $1.50 for two bottles and An online clothing store charges $7.50 to ship ten clothing items. To find the unit rate you must divide the total price/ total items= unit rate. So I did $1.50/2= 0.75 and $7.50/10= 0.75 That is how I got the answers. To double check multiply the unit rate you got multiplied by the items. Like for The bottle water I did $0.75*2=$1.50. </span>

<span>Hope I helped! :D </span>

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Solve the system and give your answer as a coordinate point in the form (k, c) k+c=100 51k+11c=2500
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Answer:

k = 35, c = 65

Step-by-step explanation:

Solve the following system:

{c + k = 100 | (equation 1)

{11 c + 51 k = 2500 | (equation 2)

Swap equation 1 with equation 2:

{11 c + 51 k = 2500 | (equation 1)

{c + k = 100 | (equation 2)

Subtract 1/11 × (equation 1) from equation 2:

{11 c + 51 k = 2500 | (equation 1)

{0 c - (40 k)/11 = -1400/11 | (equation 2)

Multiply equation 2 by -11/40:

{11 c + 51 k = 2500 | (equation 1)

{0 c+k = 35 | (equation 2)

Subtract 51 × (equation 2) from equation 1:

{11 c+0 k = 715 | (equation 1)

{0 c+k = 35 | (equation 2)

Divide equation 1 by 11:

{c+0 k = 65 | (equation 1)

{0 c+k = 35 | (equation 2)

Collect results:

Answer: {c = 65 , k = 35

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