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3 years ago

Can you help me, I'm stuck

Mathematics

2 answers:

katrin [286]3 years ago

7 0

Answer:

x=9

Step-by-step explanation:

Eddi Din [679]3 years ago

5 0

Answer:

x = 9

Step-by-step explanation:

According to the Product of a Power Property, when you multiply the power with the same base, you just have to add the exponents.

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SOMEONE PLEASE HELP ME PLEASE

Stells [14]

Answer:

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2 years ago

A sum of money is deposited at a bank at a rate of 12½ annum simple interest. In how many years would the deposited money be dou

Dmitrij [34]

Answer:

It would take 10 years for the given sum of money be doubled at the given simple interest rate.

Step-by-step explanation:

A 10% interest would be added to the the principal amount after each year. So the interest would reach 100% i.e. equal to the principal amount in 10 years.

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2 years ago

A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occ

Shkiper50 [21]

Answer:

a) The mean number of cases is 0.14608 cases.

b) The probability that the number of cases is exactly 0 or 1 is 0.990.

c) The probability of more than one case is 0.010

d) No, because the probability of more than one case is very small

Step-by-step explanation:

We can model this problem with a Poisson distribution, with parameter:

$\lambda=r*t=0.000011*13,280=0.14608$

a) The mean amount of cases is equal to the parameter λ=0.14608.

b) The probability of having 0 or 1 cases is:

$P(k=0)=\frac{\lambda^0 e^{-\lambda}}{0!}=\frac{1*0.864}{1} =0.864\\\\ P(k=1)=\frac{\lambda^1 e^{-\lambda}}{0!}=\frac{0.14608*0.864}{1} =0.126\\\\P(k\leq1)=0.864+0.126=0.990$

c) The probability of more than one case is:

$P(k>1)=1-P(k\leq 1)=1-0.990=0.010$

d) The cluster of 4 cases can not be due to pure chance, as it is a very high proportion of cases according to the average rate. Just having more than one case has a probability of 1%.

7 0

2 years ago

I can't seem to figure it out lol.

fomenos

4y+2x+y+79-x=180°

5y+x=101

X=101 -5y

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3 0

2 years ago

Read 2 more answers

Describe the relationship between a circle and a sphere

Sauron [17]

Answer:

A Circle is a two-dimensional figure whereas, a Sphere is a three-dimensional object. A circle has all points at the same distance from its centre along a plane, whereas in a sphere all the points are equidistant from the centre at any of the axes.

3 0

2 years ago