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AlladinOne [14]
2 years ago
11

Sally paid $1.50 for 2\frac{1}{2}2 2 1 ​ pounds of apples at the Grocery Mart. Fred paid $1.95 for 3 pounds of apples at the Cor

ner Fruit Stand. Who paid less money per pounds for their apples, Sally or Fred? Show the computation to find each unit rate.
Mathematics
1 answer:
Semmy [17]2 years ago
7 0

Answer: Sally paid less

Step-by-step explanation:

From the question, Sally paid $1.50 for 2 1/2 pounds of apples at the Grocery Mart. The cost per pound of apple will be:

= $1.50 ÷ 2 1/2

= $1.50 / 2.5

= $0.6 pee pound of apple

Fred paid $1.95 for 3 pounds of apples at the Corner Fruit Stand. The cost per pound of apple will be:

= $1.95 / 3

= $0.65 pee pound of apple.

Sally paid less

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Option C:

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Given equation:

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Subtract 1 + cos²x from both sides.

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Using the trigonometric identity:\cos ^{2}(x)=1-\sin ^{2}(x)

\sin x-1-\left(1-\sin ^{2}x\right)=0

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Let sin x = u

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Factor the quadratic equation.

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sin x = 1

The value of sin is 1 for 90°.

x = 90°.

Option C is the correct answer.

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