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Tasya [4]
3 years ago
7

A collector is selling antique coins from a collection. Currently, each coin is worth $11.50. the value of each coin is expected

to increase by $1.35 per month. If Jennifer purchases 25 coins, what is the expected value of the coins 12 months from now?
Mathematics
1 answer:
Phoenix [80]3 years ago
4 0
The answer to your question is 4657.50
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An optical inspection system is used to distinguish among different part types. The probability of a correct classification of a
Whitepunk [10]

Answer: \mu=2.88\ \&\ \sigma^2=0.115

Step-by-step explanation:

Given : The probability of a correct classification of any part is : p=0.96

sample size : n= 3

The formula to find the mean and variance for binomial distribution is given by :-

\mu=np\\\\\sigma^2=np(1-p)

Let the random variable X denote the number of parts that are correctly classified.

The, for the given situation, we have

\mu=3(0.96)=2.88\\\\\sigma^2=(3)(0.96)(1-0.96)=0.1152\approx0.115

Hence, the mean and variance of X are 2.88 and 0.115 respectively.

4 0
4 years ago
Which of the following statements is no True?
bezimeni [28]

Answer:

correct answer is A. because the square root of 122 is 11.06 which means its between 11 and 12, not 10 and 11

Step-by-step explanation:

4 0
2 years ago
Abby spent 5/8 of her money and saved the rest. If she spent $45 how much money did she have at first?
dybincka [34]
 im sorry im just writing this so i can give you the answer but i think it is 135
5 0
4 years ago
Robert climbed 775 steps in 12 1/2 minutes. how many steps did he average per minute
Eva8 [605]
The sense of "rate<span>" being used is "a quantity, amount, or degree of something measured per unit of something else". This is what is asked in this problem. TO calculate, we divide  the number of steps to the time it takes.

Steps/min = 775/12 1/2 = 62 steps per minute

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5 0
3 years ago
Read 2 more answers
Write the slope intercept form of the equation of the line described
kondor19780726 [428]

Hello!

Slope intercept form is y = mx + b, where m is the slope and b is the y intercept.

Now, we first can find the slope. We know the line is parallel to y = 2/5x - 2, and parallel lines <u>always have the same slope.</u> Therefore, we now know that the slope (or m) is 2/5. Substitute that in the equation.

y = 2/5x + b

Finally, we are given a point. We can substitute (-5, -3) into the equation, and then solve for b.

x = -5, y = -3

-3 = 2/5 (-5) + b

-3 = -2 + b

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Now, we know what b is. Substitute this into the equation.

Therefore, y = 2/5x - 1 is our final equation.

Hope this helps!

5 0
3 years ago
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