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nikdorinn [45]
3 years ago
11

Which rate is a unit rate?

Mathematics
2 answers:
Aloiza [94]3 years ago
7 0
The 3rd option (500m/1gal) is the correct answer.

A unit rate is the cost or amount of something per ONE object. So with this we already eliminate the 1st and 4th option. Next, I guess technically both could be considered a unit rate but the 3rd one is for sure an example of a unit rate.

Hope this helped!
Lena [83]3 years ago
3 0
Your answer would be B, $12/ 1 hour 

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Step-by-step explanation:

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Find the exact values of sin θ/2 and cos θ/2 for sin θ = 3/4 on the interval 0° ≤ θ ≤ 90°
timofeeve [1]

Answer:

Step-by-step explanation:

If our interval is between 0 and 90 degrees, that means that our angles are first quadrant angles.  Since the formulas for the half angles of sin and cos consider both the positive and negative roots, knowing that we are in QI leaves us using only the principle, or positive, root.  

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sin(\frac{\theta}{2})=\sqrt{\frac{1-\frac{\sqrt{7} }{4} }{2} }

Get a common denominator on the upper fraction:

sin(\frac{\theta}{2})=\sqrt{\frac{\frac{4-\sqrt{7} }{4} }{2} }

Bring up the 2 as 1/2 to multiply and get:

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When you do the exact same thing to find the cos of the half angle, you are using a + sign instead of a - sign under the radical.  That gives you as your exact value:

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3 years ago
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Lina20 [59]

Answer:

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Answer:

4/5 if i did my math right

Step-by-step explanation:

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