we know that
The price on sale will be equal to
therefore
<u>the answer is</u>
Brian has reduced his cholesterol level by 20% by following a strict diet and regular exercise. If his original level was 220, w
hat is his cholesterol level now?
2 answers:
Answer:
Option B is the answer.
Step-by-step explanation:
Actual cholesterol level of Brain was 220.
He reduced his cholesterol level by 20% By following a strict diet and regular exercise.
So we have to calculate current level of his cholesterol.
Since 20% of 220 = = 44
So after reduction of 44 units cholesterol level will be 220 - 44 = 176
Option B 176 is the answer.
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In this question, it is given that
You start skiing at an elevation 240 ft from the base of the hill and your elevation decreases 8 ft each minute. Your friend starts skiing 320 ft from the base of the hill and her elevation decreases 12 ft per minute.
Let the elevation is represented by h and time by tminutes .
So we have two equations here, which are
And for same elevation, height is same. THat is
THerefore,after 20 minutes, they are at same elevation .
Answer:
- modulus: 3√2
- argument: -3π/4 (or 5π/4)
Step-by-step explanation:
The modulus is the magnitude of the complex number; the argument is its angle (usually in radians).
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<h3>rectangular form</h3>The complex number can be cleared from the denominator by multiplying numerator and denominator by its conjugate:
The magnitude of this number is the root of the sum of the squares of the real and imaginary parts:
modulus = √((-3)² +(-3)²) = 3√2
The argument is the arctangent of the ratio of the imaginary part to the real part, taking quadrant into consideration.
arg = arctan(-3/-3) = -3π/4 or 5π/4 . . . . radians
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modulus∠argument = (3√2)∠(-3π/4)