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Elanso [62]
3 years ago
15

The sales of a certain product after an initial release can be found by the equation s=16√7t+62 where s represents the total num

ber of units sold and t represents the time in weeks after release. How many weeks will pass before the product sells about 150 units? A. 176 weeks B. 69 weeks C. 4 weeks D. 30 weeks
Mathematics
2 answers:
natita [175]3 years ago
7 0

Answer:

4 weeks

Step-by-step explanation:

simplify radical

Aleonysh [2.5K]3 years ago
3 0
You want to replace the s with 150 in the equation and then just solve for t.
150=16√7t +62    subtract 62 from both sides
88=16√7t              divide both sides by 16
5.5=√7t                to get rid of the square root  square both sides. 
30.25=7t              now divide both sides by 7
4.3 = t (approximately) 
so at 4 weeks they will have sold 150 units.
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10 of the students in Miss Ransom‘s class play an instrument. These 10 students make up 40% of the class how ,many students are
Mashutka [201]

Answer:

250 students

Step-by-step explanation:

Given data

Let the total number of students be x

Number of students that plays instrument = 10

Hence

40% of x = 10

40/100*x= 100

0.4x=100

x=100/0.4

x= 250

Hence there are 250 students in total

3 0
3 years ago
A parallel system functions whenever at least one of its components works. Consider a parallel system of 5 components, and suppo
Aneli [31]

Answer:

Probability that component 4 works given that the system is functioning = 0.434 .

Step-by-step explanation:

We are given that a parallel system functions whenever at least one of its components works.

There are parallel system of 5 components and each component works independently with probability 0.4 .

Let <em>A = Probability of component 4 working properly, P(A) = 0.4 .</em>

<em>Also let S = Probability that system is functioning for whole 5 components, P(S)</em>

Now, the conditional probability that component 4 works given that the system is functioning is given by P(A/S) ;

P(A/S) =  {Means P(component 4 working and system also working)

divided by P(system is functioning)}

  P(A/S) =  {In numerator it is P(component 4 working) and in

                denominator it is P(system working) = 1 - P(system is not working)}

Since we know that P(system not working) means that none of the components is working in system and it is given with the probability of 0.6 and since there are total of 5 components so P(system working) = 1 - 0.6^{5} .

 Hence, P(A/S) = \frac{0.4}{1 - 0.6^{5} } = 0.434.    

7 0
3 years ago
(√x-4/x-2√x+3/√x-2) <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%28%E2%88%9Ax-4%29%20%7D%7Bx-2%E2%88%9Ax%7D%20%2B%20%5Cfrac%7B3%
charle [14.2K]

Answer: Down there there is an image with the correct answer and step by step

I hope that it helps you!

5 0
2 years ago
As a membership fee a health club charges a one time amount of $40 and charges $25 for each month. The total fee after m months
ICE Princess25 [194]
First you need to set up an equation y = mx + b. m would be the monthly charge and b would be the one time fee. x represents the number of months.
To solve for the number of months with a total price of 240 we substitute 240 in for y and solve for x.
240 = 25x + 40
subtract 40 from each side
200= 25x
divide by 25
8 = x
8 months

10 + 7r = 45
7r = 35
r = 5
5 miles
3 0
3 years ago
Maria can clean the entire house in two hours. Her sister, Sasha, can clean the house in three hours. How long would it take for
lisabon 2012 [21]
Maria do 1/2 work in 1 hour
Sasha do 1/3 work in 1 hour

Thus,
1/2+1/3=5/6 work in 1 hour
5/6 work in = 1 hour
1 work in =6/5=1.2 hours =72 minutes
3 0
3 years ago
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