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grin007 [14]
3 years ago
11

henry receives a flat rate of $90 per day and can earn a $2.50 commission for each computer repair (r) he performs. yolanda rece

ives a flat rate of $75 per day and can earn $5.25 per computer sale (s) she makes. which system of linear equations models their earnings?
Mathematics
1 answer:
Blizzard [7]3 years ago
4 0
Henry: 2.50r + 90 = Earnings
Yolanda: 5.25r + 75 = Earnings
Where r is the number of repairs performed. 
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Step-by-step explanation:

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Width of seven pencils = 2\dfrac58\text{ inches}=\dfrac{16+5}{8}\text{ inches}=\dfrac{21}{8}\text{ inches}

Width of box is not taken up by pencils =  Width of pencil box  - Width of seven pencils

\left \{ {{y=2} \atop {x=2}} \right. \dfrac{21}{4}-\dfrac{21}{8}\\\\=\dfrac{21\times2-21}{8}\\\\=\dfrac{21}{8}\text{ inches}=2\dfrac58\text{ inches}

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Width of each pencil = (Width of seven pencils ) ÷ 7

=\dfrac{21}{8}\div7\\\\=\dfrac{21}{8}\times\dfrac17\\\\=\dfrac38\text{ inches}

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What percentage of 50kg is 65 kg? ​
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