Answer: B
Step-by-step explanation:
Edge2020
I’d love to help I pretty sure it is C-6
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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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The answer to this question is 48/7
the diagonals of a rhombus bisect the angles.
if angle 2 is 48, angle 4 is also 48. therefore, by alternating interior angles, angles 9 and 7 are also 48. This means m<MOH = 96.
if angle 7 is 61, angle 9 is 61 as well. this means m<MOH is 122. therefore m<RHO = 180 - m<MOH. this means m<RHO = 58.
I'm not sure I understand the context of 5. how are do they expect you to solve for x? you could solve for it in terms of m<3, which would mean x = (m<3 + 6)/8.
