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aliya0001 [1]
4 years ago
5

The final exam in history class consists of 100 multiple choice questions. Each have five answer choices and only one of them is

correct. An unprepared student makes a random guess for each question. What is the probability that the student selects the correct answer on one question
Mathematics
1 answer:
Vitek1552 [10]4 years ago
6 0

Answer: 1/5 or 20%

Step-by-step explanation: Since there are 5 questions and only one is correct, 1/5 of the options are correct. If a random selection being made, there therefore is a 1/5 chance that a correct answer is selected.

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The quotient of 30 and the sum of 2 and 3
m_a_m_a [10]

Answer:

30 divided by 2+3 is 6.

Step-by-step explanation:

The first thing you need to do is add 2 and 3, which is five, and then divide 30/5. The quotient is 6.

8 0
4 years ago
Rita has deposited $1000 in a bank account. At the end of each year, the bank posts interest to her account in the amount of 5%
Butoxors [25]
5% of $1000 is $50 bringing up her balance to $1050 minus the $10 fee at the end the year making her balance $1040.
For year 2 it will be $1082
For year 3 it will be $1126.10
For year 4 it will be $1172.41
For year 5 it will be $1231.03
6 0
3 years ago
Find a, b and c giving reasons for each answer.
kap26 [50]

Answer/Step-by-step explanation:

1.

✔️a = 180 - 110 (consecutive angles are supplementary)

a = 70°

✔️b = a (corresponding angles are congruent)

b = 70°

✔️c = 110° (alternate interior angles are congruent)

2.

✔️a = 180 - 120 (linear pair)

a = 60°

✔️b = a (corresponding angles are congruent)

b = 60°

✔️c = a (alternate interior angles are congruent)

c = 60°

3.

✔️a = 55° (corresponding angles are congruent)

✔️b = 55° (Vertical angles are congruent)

✔️c = 180 - 55 = 125° (linear pair)

4.

✔️a = 115° (corresponding angles are congruent)

✔️b = 180 - a (linear pair)

b = 180 - 115

b = 65°

✔️c = b (vertical angles are congruent)

c = 65°

5.

✔️a = 180 - 25 = 155° (supplementary angles)

✔️b = 25° (corresponding angles)

✔️c = 25° (vertical angles)

6.

✔️a = 180 - 10 = 170° (linear pair)

✔️b = a (corresponding angles are congruent)

b = 170°

✔️c = 10° (corresponding angles are congruent)

6 0
3 years ago
450 people are randomly selected at grocery stores across the state and surveyed on the amount of money they are spending at the
____ [38]

Answer:

Step-by-step explanation:

Sample variance when large number of samples are drawn we have tend to become a normal distribution.

Variance of the sample is different since variance

Var(x) = E(x^2)-{E(x)}^2

is the formula used for finding the variance of any sample.

But sampling distribution of variance requires repeating this process with the different samples several times.

So option A is not right

B is also not correct, C is wrong

D.The sampling distribution of the mean requires multiple samples to be compared. However, in this situation you are looking for the variance, so finding the sample variance is the same as investigating the sampling distribution of the variance.

is correct

3 0
4 years ago
A. G(X) &gt; -6<br> B. All real numbers<br> C. G(X) &lt; 0<br> D. G(X) &lt; 10
Inessa [10]

Answer:

can't explain how but i'm confident the answer is:

A. G(X) > -6

8 0
3 years ago
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