Answer:
1. 37.5 metres.
2. 33.33 metres (May be wrong due to the answer but I used the correct solution to find the answer)
3. Refer to explanation.
Step-by-step explanation:
1. Find out how much Logan and Mila both swam.
1/3 of an hour =
60 minutes ÷ 3 = 20 minutes
Logan swam 750 metres for 20 minutes.
Mila swam 2/3 of Logan's distance.
Find out how much is 1/3 of Logan's distance in 1/4 of an hour.
3/3 = 750
1/3 = 750 ÷ 3 = 250
2/3 = 250 x 2 = 500
1/4 of an hour =
60 minutes ÷ 4 = 15 minutes
Mila swam 500 metres in 15 minutes.
To find out Logan's average swimming speed, here's the formula:
Total distance/total elapsed time
So it is 750/20 which is 37.5 metres.
2. Use the same formula I mentioned above in question 1 for average swimming speed, so it is...
500/15 = 33.33 metres
3. Other ways to compare Mila's and Logan's swimming speed is to find out the difference of the distance of how long they swam.
Use Mila's average swimming speed and find out how much metres she would swim if she swam for 20 minutes.
33.33 metres x 20 minutes = 666.6 metres
Answer:
22 feet
Step-by-step explanation:
33 x 2/3 = 22
Answer:
Therefore the two values required are 2.08 and -11.08.
Step-by-step explanation:
i) f(x) = + 10x - 12 is a quadratic equation and a quadratic equation will have two roots whose values when substituted in to the given quadratic equation will give the value.
ii) The question is therefore essentially asking us to find the roots of the given quadratic equation.
This can be done by equating the given quadratic equation to zero and then solving the equation for its roots.
∴ + 10x -12 = 0 ⇒ x = (-10 ± ) ÷ 2
= (-10 ± 12.166)÷2 = 2.08, -11.08
Therefore the two values required are 2.08 and -11.08