Here's the question you clicked on:
Sariah
Solve the problem. Instruments on a satellite measure the amount of power generated by the satellite's power supply. The time t and the power P can be modeled by the function P = 50e^{-t/300}, where t is in days and P is in watts. How much power will be available after 378 days? Round to the nearest hundredth. a. 141.8 watts b. 14.18 watts c. 1.41 watts d. 0.14 watts
Why not just plug in t = 378 in the expression?
girl : Am I pretty? Boy : NO. Girl : Do you want to be with me forever? Boy : NO. Girl : Would you cry if I walked away?Boy : NO. She heard enough, and was hurt. She walked away, tears ran down her face. The boy grabbed her arm. Boy : Your not pretty, your beautiful. I don't want to be with you forever, I NEED to be with you forever. And I wouldn't cry if you walked away, I would DIE. (Boy whispers) : Please? Stay with me. (Girl whispers) : I will. Tonight at midnight your true love will realize they love you. Something good will happen to you between 1-4 pm. Tomorrow it could be anywhere. Get ready for the biggest shock of your life! If you don't post this to 5 other pages. You will have relationship problems for the next 10 years
Plugging in t = 378 gives 14.18 watts, option b. If I have understodd the problem, this is correct.
Elekt how can be sure that this the right answer?
Well, if I have understood the problem, it asks how much power it is after 378 days. Since you have a function that describes the amount of power at any instant t, it should just be to plug in t = 378 days when t is in days :)
ok you are right... thanks... i have mor question dear can you keep helping me ?
List all the elements of B that belong to the given set. \[B =\left\{ 5,\sqrt{7,-3.0,} \right\} 0>5 0.62\] Rational numbers a. \{5,0\} b. \{\sqrt{7},\frac{0}{5},0.62\} c. \{ \sqrt{7} \} d. \{5,-3,0,\frac{0}{5},0.62\}
Hmmz, not even sure what that means because of the \[0 > 50.62\] in there :P
And are you just supposed to list the rational elements of that set?
Ah, well then the elements of the set will be all the numbers inside there, unless you are looking for just rational numbers. In that case, it will only be 5, -3, 0, 0/5, 0, 62
Question 10 Find the value of the indicated trigonometric function of the angle θ in the figure. Give an exact answer with a rational denominator. |dw:1322515842341:dw| a. \frac{8 \sqrt{39}}{39} b. \frac{5}{8} c. \frac{5 \sqrt{39}}{39} d. \frac{ \sqrt{39}}{8}
But I guess since some of the elements occur several times, you need just list up the the numbers that occur several times just once.
ok, I have sent othe Question? Please hkeep help me...
yes, \[\sin \theta = \frac{5}{8}\] Because sines is defined as the relationship between the opposite side and the hypotenuse.
Solve the problem. Susan purchased some municipal bonds yielding 7% annually and some certificates of deposit yielding 9% annually. If Susan's investment amounts to $19,000 and the annual income is $1590, how much money is invested in bonds and how much is invested in certificates of deposit? a. $13,500 in bonds; $5500 in certificates of deposit b. $5500 in bonds; $13,500 in certificates of deposit c. $13,000 in bonds; $6000 in certificates of deposit d. $6000 in bonds; $13,000 in certificates of deposit