Answer:
b. Kathy
Step-by-step explanation:
We compare each of their score by how far away from the mean when in term of the standard deviation. Using the following formula
For John he is (85 - 75)/5 = 2.
For Kathy she is (80 - 50)/10 = 3.
Since Kathy is 3 standard deviation better than her class' average, while John is only 2's. We conclude that Kathy did better.
Answer: the system of equations are
3x + y = 14
y = 4x
Step-by-step explanation:
Let x represent the number of three point shots that Hailey made.
Let y represent the number of free throws(worth one point each) that Hailey made.
Hailey made some three point shots and some free throws and
scored a total of 14 points. This would be expressed as
3x + y = 14
Hailey made 4 times as many free throws as three point shots. This would be expressed as
y = 4x
Answer:
<h2> 21 km </h2>
Step-by-step explanation:
If the bicyclist travels 7 km for every 5 minutes then it is directly proportional
5 min 7 km
15 min x
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Find Sales Price of 5 gallons of ice-cream:
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Sales price of Fruity Tooty = $6.00
Sales price of Peanut Butter = $5 x 2 = $10.00
Sales price of Rocky Road = $5.25 x 2 = $10.50
Total Sales Per 5 gallon = $6 + $10 + $10.50 = $26.50
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Find Variable Cost of 5 gallons of ice-cream:
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Variable Cost of Fruit Tooty = $5.25
Variable Cost of Peanut Butter = $4.50 x 2 = $9.00
Variable Cost of Rocky Road = $4 x 2 = $8.00
Total Variable Coast = $5.25 + $9 + $8 = $22.25
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Fixed Cost Given:
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Fixed Cost = $7500
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Define x:
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Let x be the number of 5 gallons that need to be sold to breakeven:
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Find x:
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26.50x = 7500 + 22.25x
26.50x - 22.25x = 7500
4.25x = 7500
x = 7500 ÷ 4.25
x = 1764.7 (Nearest tenth)
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Find the number of gallons of ice-cream needed:
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Total number of 5 gallons needed = 1764.7
Total gallons needed = 1764.7 x 5 =8823.5
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Answer: I sceam needs to sell 8823.5 gallons of ice cream to break even.
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