Answer:
12
Step-by-step explanation:
Answer:
John Hughes won in the month a total of $4405
Step-by-step explanation:
if we have that Jhon earns a salary of $ 2800 and a commission of 7.5% of the sales he made for a value of $ 21400
to know the gain of jhon we have to add the basic salary with the percentage of what he sold
x = 2800 + 21400 * 7.5%
7.5% can be expressed as 7.5/100
x = 2800 + 21400 * 7.5/100
x = 2800 + 21400 * 0.075
x = 2800 + 1605
x = 4405
The weight average of the coordinates is 7
<h3>How to determine the weight average?</h3>
The given parameters are:
Coordinate 5 has a weight of 1
Coordinate 8 has a weight of 2
The weight average is then calculated as:
Weight average = Sum of (Weight * Coordinate)/Sum of Weights
So, we have:
Weight average = (5 * 1 + 8 * 2)/(1 + 2)
Evaluate the quotient
Weight average = 7
Hence, the weight average of the coordinates is 7
Read more about average at
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Define x and y
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Let x be the amount of the cream (which has 2.5% of hydrocortisone)
Let y be the amount of the water-washable base. (which has 0% of hydrocortisone)
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Construct the 2 equations:
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Both x and y must add up to 120g
⇒ x + y = 120
Both x and y must add up to only 1% of hydrocortisone.
⇒0.025x + 0.0y = 0.01 x 120
⇒0.025x = 1.2
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Solve x and y:
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x + y = 120 ----------------- (equation 1)
0.025x = 1.2 ----------------- (equation 2)
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From equation 2:
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0.025x = 1.2
x = 1.2 ÷ 0.025
x = 48
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Substitute x = 48 into equation 1:
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x + y = 120
48 + y = 120
y = 120 - 48
y = 72
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Answer: 48g of 2.5% of the cream and 72g of the water washable base are needed to make 120g of the prescription.
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