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juin [17]
3 years ago
7

Express 45 minutes as a fraction of 1 hour ​

Mathematics
1 answer:
Pepsi [2]3 years ago
8 0

Answer:

\frac{3}{4}

Step-by-step explanation:

There are 60 minutes in 1 hour

To express as a fraction

\frac{45}{60}

Divide numerator/denominator by 15

\frac{45}{60} = \frac{3}{4}

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1. Find the perimeter.<br> 13 yd<br> 14 yd<br> 7 yd<br> 18 yd
nikdorinn [45]

Answer:

52 yards

Step-by-step explanation:

Perimeter is all sides added together.

13 + 14 + 7 + 18 = 52

4 0
2 years ago
Read 2 more answers
14/38 simplified? Thanks!
ira [324]
14/38 simplified would be 7/19
5 0
3 years ago
A city's water tower is built using a right circular cone and a right cylinder, as shown.
Gemiola [76]
The answer is B

Volume of the cone: 63617.25
Volume of the cylinder: 891000

Hope this helps ;)
5 0
3 years ago
Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for
lisov135 [29]
34-0.5d=l

34-0.5d=26
34-26=0.5d
8=0.5d
8/0.5=d
16=d
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8 0
3 years ago
A coin is tossed 72 times. What is a reasonable prediction for the number of
Aneli [31]

Answer :

That’s it, the probability of getting tail on a single coin toss times the number of observations.

In this case, 1/2 * 72 = 36

However, there’s something called chance error. How much do you expect the result to differ from the expected value? It can be calculated as follows:

The Standard Deviation of this experiment is  √(0.5)(0.5) =0.5

The Standard Error is  √72 (0.5) ≈ 4.18330 round to the nearst tenth is 4

So, the expected value is 36, give or take 4.

And since the number of tails in a toss coin experiment is normally distributed, then you can expect the number of tails to be between -2 and +2 SEs from the expected value 95% of the time.

In other words, if you repeat this experiment a large number of times, you can expect to obtain between 27 and 43 tails 95% of the time.

Hope this helps

4 0
3 years ago
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