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DENIUS [597]
3 years ago
15

Am i doing this right

Mathematics
1 answer:
Genrish500 [490]3 years ago
3 0

Answer:

Step-by-step explanation:

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The diameter of a circle is 7m. Find its area in terms of pie(urgent plz help)
wolverine [178]

Answer:

12.25 pi

Step-by-step explanation:

radius=3.5

area=pi(r^2)

12.25pi

7 0
4 years ago
The graph shows the cost of some taxi journeys.<br> Work out a formula for C in terms of n.
Gnom [1K]
Wouldn’t it be 5/3 cause x/y
Someone help a little more please, I’m not sure what setup they want
8 0
3 years ago
Increase £16870 by 3% <br> Give your answer rounded to 2 DP
Naya [18.7K]

Answer:

17376.1 euros

Step-by-step explanation:

100%=16870

103%=x

103% x 16870=1737610/100=17376.1

6 0
4 years ago
Read 2 more answers
A tennis player makes a successful first serve 51% of the time. If she serves 9 times, what is the probability that she gets exa
aleksley [76]

Answer:

P(X=3)

And we can use the probability mas function and we got:

P(X=3)=(9C3)(0.51)^3 (1-0.51)^{9-3}=0.1542  

Step-by-step explanation:

Previous concepts  

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".  

Solution to the problem  

Let X the random variable of interest, on this case we now that:  

X \sim Binom(n=9, p=0.51)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

And we want this probability:

P(X=3)

And we can use the probability mas function and we got:

P(X=3)=(9C3)(0.51)^3 (1-0.51)^{9-3}=0.1542  

4 0
3 years ago
Read 2 more answers
What is the biggest whole number smaller than the perimeter of any triangle with a side of length 5.6 and a side of length 19.7?
snow_tiger [21]

Answer:

50

Step-by-step explanation:

The perimeter of a Triangle is the sum of it's 3 sides.

We are given two sides here which is side length 5.6 and a side of length 19.7

Let's us represent the third side as x

Therefore

x + 19.7 + 5.6 = Perimeter of the triangle

We would have this equation

But it is important to know that every side of a triangle must be less than the sum of the other two sides, hence

x < 19.7 + 5.6

x < 25.3

Adding 25.3 to both sides to make the left side equal to the perimeter

perimeter = x+25.3 < 25.3 + 25.3 = 50.6

Therefore, 50.6 is the smallest whole number that is larger than the perimeter of the triangle in the question above.

Therefore, the biggest whole number smaller than the perimeter of the above triangle is 50

6 0
3 years ago
Read 2 more answers
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