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dimaraw [331]
2 years ago
3

jack is 10 years old Kylie is 17 years old Vanessa is 23 years old Kylie and Vanessa share £16 in the ratio of their ages. Kylie

gives 20% of her share to Jack, how ,much money does Jaclk receive - Ratio
Mathematics
1 answer:
erik [133]2 years ago
3 0

Photomath - Scan. Solve. Learn.
This gave my son his confidence in math Photomath was able to show him how to get to the correct answer and the light bulb came on.
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a phone company offers a monthly data plan at for $10 a month . the plan includes two megabytes of data and charges $0.10 per me
tatuchka [14]

Answer:

\ m(x) = \{ {{10, if x\leq 2} \atop {0.1x + 9.8, if x>2}} \right.

Step-by-step explanation:

  • One off charge = $10
  • Charge for data over 2 Mb is =  $0.10 per MB

<u>The monthly charge for x MB data is:</u>

1 . Data ta used up to 2 Mb

  • $10  

2 . Data used more than 2 Mb

  • m(x) = 10 + 0.1(x - 2) = 10 + 0.1x - 0.2 = 0.1x + 9.8
  • m(x) = 0.1x + 9.8

So the function is:

  • \ m(x) = \{ {{10, if x\leq 2} \atop {0.1x + 9.8, if x>2}} \right.
5 0
2 years ago
A fisherman catches fish according to a Poisson process with rate lambda = 0.6 per hour. The fisherman will keep fishing for two
spayn [35]

Answer:

Step-by-step explanation:

Given that a fisherman catches fish according to a Poisson process with rate lambda = 0.6 per hour.

The fisherman will keep fishing for two hours.

Since he continues till he gets atleast one fish, we can calculate probability as follows:

(a) Find the probability that he stays for more than two hours.

= Prob (x=0) in I two hours and P(X≥1) in 3rd hour

=P(x=0)*P(X=0)*P(X≥1) (since each hour is independent of the other)

= 0.5488^2*(1-0.8781)\\\\=0.2645

(b) Find the probability that the total time he spends fishing is between two and five hours.

Prob that he does not get fish in I two hours * prob he gets fish between 3 and 5 hours

=P(0)^2 *F(1)^3\\=0.5488^2*0.2645^3\\=0.00557

(c) Find the expected number offish that he catches.

Expected value in Geometric distribution = \frac{1-p}{p}, where p = prob of getting 1 fish in one hour

= \frac{0.6}{1-0.6} \\=3

(d) Find the expected total fishing time, given that he has been fishing for four hours.

= Expected fishing time total/expected fishing time for 4 hours

=3/0.6*4

= 1.25 hours

4 0
2 years ago
If cos28 = x/4, find x(3sf)
FinnZ [79.3K]
Cos28 = x/4 so to get rid of the fraction , multiply each side by 4 so it'll be
4cos28 = x
x = 3.531790371
Hope this helps=)
3 0
2 years ago
Charlize wants to measure the depth of an empty well. She drops a ball from a height of 3 feet into the well
pentagon [3]

Answer:

  about 151 feet

Step-by-step explanation:

The height of the ball at a time of 3.1 seconds is given by Charlize's equation as ...

  h(3.1) = -16(3.1)^2 +3 = -150.76 . . . feet

The well is about 151 feet deep.

_____

<em>Comment on this measurement</em>

The speed of sound is sufficiently slow that it will make a difference in the time Charlize records. She would get a more accurate measurement if she were able to <em>see</em> the ball hit bottom.

5 0
2 years ago
A bicycle tire has a radius of 5 inches. To the nearest inch, how far does the tire travel when it makes 8 revolutions?
Pani-rosa [81]

Answer:

251 inches

Step-by-step explanation:

c = 2πr

c = 2(3.14)(5) = 31.4

31.4 x 8 rev. = 251 inches

4 0
2 years ago
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