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Ierofanga [76]
3 years ago
15

Help me slove these 3 problems

Mathematics
1 answer:
igomit [66]3 years ago
4 0
3) Take the original price and subtract the original price * the discount percentage

99.50 - (99.50 * 0.50)
99.50 - 49.75
49.75
Option C is your answer.

4) Take the original price and add the original price * the tax rate

99.50 + (99.50 * 0.04)
99.50 + 3.98
103.48
Option D is your answer.

5) Take the original price and add the original price * the markup rate

3.95 + (3.95 * 0.20)
3.95 + 0.79
4.74
Option D is your answer. 
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Is square root 1 minus sine squared theta = cos Θ true? If so, in which quadrants does angle Θ terminate?
Cloud [144]

Answer:

True; quadrants I & IV

Step-by-step explanation:

We know the relation between sine and cosine function which is given by

\sin^2 \theta +\cos^2 \theta = 1

Let us solve this equation for cosine function.

\cos^2 \theta = 1-\sin^2 \theta

Take square root both sides. When ever we take square root we need to write the solution in plus minus form

\sqrt{\cos^2 \theta}=\pm\sqrt{1-\sin^2 \theta}

\cos \theta=\pm\sqrt{1-\sin^2 \theta}

\cos \theta=-\sqrt{1-\sin^2 \theta}, \sqrt{1-\sin^2 \theta}

If Θ is in quadrants I and IV then the value will be positive and if Θ is in II and III quadrant then the value is negative.

Hence, if Θ is in quadrants I & IV, then we have

\cos \theta=\sqrt{1-\sin^2 \theta}

Thus, the correct option is: True; quadrants I & IV


6 0
3 years ago
Read 2 more answers
Mr. Carter is making a dessert using 9/10 pound of peach and 5/10 pound of raspberries. How much more peaches than raspberries i
-Dominant- [34]
Answer: 4/10
Explanation: 9/10 - 5/10 = 4/10
The denominator is already both 10 so u can subtract the numerator without worry
8 0
2 years ago
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