3 years ago

Show work and how plz answer

Mathematics

1 answer:

Umnica [9.8K]3 years ago

8 0

It's D. because using the distributive property, seven x nine is equal to 63x, while seven x five is equal to 35y

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A coin is to be tossed 1000 times. what is the probability that the 785th toss is heads?

soldier1979 [14.2K]

It does not matter how many times the coin is being tossed, the theoretical probability of heads still remains as 50% for a single given toss.

5 0

2 years ago

The mean value of 500 homes in a county is $225,000 and the standard deviation is $25,000. approximately how many of the homes i

dusya [7]

240 homes in the county are between $175,000 and $225,000.

The image attached is associated with this question and m in it refers to the mean value which is $225000 here and d refers to the standard deviation which is $25000 here.

Now since m= $225000

and $175000= $225000-$50000= $225000-(2* $25000)= m-2d

Thus, as per the image area covered between m and m-2d= $225000

and $175000 is (34%+14%)of 500 homes= 68% of 500= 240 homes, is the answer.

A random variable X is said to follow a normal distribution if its parameters are mean and standard deviation. Every other distribution can be reduced to a normal distribution.

Learn to know more about normal distributions on brainly.com/question/4079902

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