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Snezhnost [94]
2 years ago
7

a swimming pool charges £3.60 for entry. you can save 1/3 of entry fee with a membership card. on his first visit, ken spends £5

on a membership card plus the reduced entry fee. how many times does ken visit before he gets back his £5
Mathematics
1 answer:
nikitadnepr [17]2 years ago
8 0

Answer:

5

Step-by-step explanation:

You save ⅓ of entry fee, so you save 1.20 and you pay 2.40. We only really care about the 1.20 reduction. 5 / 1.2 = 4.16 so he must go 5 times to get the 5 back

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Find the inverse function for f(x)=sqrt2x-6 picture below
Olenka [21]

Answer:

y = (x^2 + 6) / 2

Step-by-step explanation:

Original function: \sqrt{2x - 6}

To find the inverse of a function we have to switch the x and y values and solve for y again

x = sqrt (2y-6)

To get rid of a square root we square the square root so:

x^2 = 2y-6

Add 6

x^2 + 6 = 2y

Divide by 2

y = (x^2 + 6) / 2

6 0
3 years ago
What happens to energy during a change of state? Why is it a physical change?​
Flura [38]

Answer & Explanation:

Energy is heat. For example, if you boil a cup of water it has more energy than   a cup at room temperature. It is considered a physical change because its properties do not change only the state of matter. On the other hand, if wood burns then that is a chemical change because it changes its chemical properties. Please rank as Brainliest if this helps! Thank you!

5 0
3 years ago
Simplify question 2 please ASAP !!!!
Mrrafil [7]

Answer:

\sqrt[3]{ - 0.125}  =  \sqrt{ - 1}  \times  \sqrt[3]{0.125 }  \\  = 5i

here i equals √-1

Step-by-step explanation:

Answer is 5i

If you have any doubts write in comments box.

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3 0
3 years ago
-51 = -t/6 please help
Anvisha [2.4K]

Answer:

T=306

Step-by-step explanation:

Simplify both sides of the equation and separate the variable

(or just times 51 by 6)

5 0
3 years ago
Read 2 more answers
a box contains 20 blue marbes, 16 green marbles, and 14 red marbles. two marbles are selected at random. let 3 be the event that
Maksim231197 [3]

Answer:

Let E be the event that the first marble selected is green. Let F be the event that the second marble selected is green. A box contains 20 blue marbles, 16 green marbles and 14 red marbles P(F/E)=15/49 because if the first marble selected is green there are 49 in total and 15 are green. I think this is it.

Step-by-step explanation:

6 0
3 years ago
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