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alisha [4.7K]
3 years ago
8

Shane deposited $200 into an account and earned $36 in interest after 3 years. Use the formula I = prt, where I represents simpl

e interest, p represents principal, r represents interest rate, and t represents time in years. What is the interest rate?
Mathematics
1 answer:
IrinaVladis [17]3 years ago
3 0

Answer:

  The interest rate = 6 %

Explanation:

We have  I = prt, where I represents simple interest, p represents principal, r represents interest rate, and t represents time in years.

 Here principal, p = 200 $

          Number of years , t = 3

        Interest received, I = 36$

       We need to find rate of interest.

Substituting

       36 = 200 x r x 3

      r = \frac{36}{200*3}= 0.06 = 6%

  The interest rate = 6 %

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James reads that 1 out of 6 eggs contains salmonella bacteria. So he never uses more than 5 eggs in cooking. If eggs do or don't
Dmitrij [34]

Answer:

B. binomial with n = 5 and p = 1/6

Step-by-step explanation:

Given that James reads that 1 out of 6 eggs contains salmonella bacteria.

So he never uses more than 5 eggs in cooking.

If eggs do or don't contain salmonella independently of each other, then

probability for any one egg to contain salmonella bacteria is the constant 1/6.

Also there are only two outcomes, either bacteria present or not.

Hence the  number of contaminated eggs when James uses 5 chosen at random has the distribution is Binomial

Here n = no of trials = no of eggs he uses = 5

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So option B is right.

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3 years ago
Your grade before taking the final exam is 493pts out of 510 possible points. The final exam is worth 100 points. How many point
Scorpion4ik [409]

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You need 75 points.

Step-by-step explanation:

Giving the following information:

Total number of points= 510 + 100= 610 (100%)

Actual number of points= 493

<u>First, we need to determine the number of points required to reach 93%:</u>

Points required= 610*0.93

Points required= 567.3 = 568

<u>Now, the points needed in the final exam:</u>

Difference of points= 568 - 493

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2 years ago
The height above the surface of the Earth​ (in meters) of a rock thrown into the air at 10​ m/s after x seconds is given by f(x)
Sonbull [250]

Answer:

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Similarly, expression showing the height of rock thrown on the moon is,

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Difference in the height of the rock thrown on moon = g(x) - f(x)

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= 8.2x²

Therefore, rock travels about 8.2x²meters higher on the moon than on the Earth.

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Answer:

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