## Related Questions

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** Problem-solving activity includes**

1.Understanding the problem,that is nature of the problem, then Completely define in your own way.

2. Determining why this problem has accrued,

3. Identifying the ways to solve the problem,

4. Prioritizing the given alternatives that is ways and then arranging the alternatives for a solution,

5. Then applying the best solution or arrangement for the given problem.

There are two ways considered for problem-solving activity

(1). Trial and Error (2) Reduction in steps

**It totally depends on the kind of problem , which you are solving. There may be Less than five alternatives ,equal to five alternatives or more than five alternatives to solve the problem.**

**Option B: False **

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Radius of circle = 3 units

C = 2πr

C = 18.8 units

2. D

The distances between the points add to 24.

3. B

A = πr²

r = √(78.5/π)

r = 5 units

Point from options that is 5 units from (2,4) is (2,-1)

4. A

length of diameter = √[(5 – 1)² + (5 – 2)]d = 5

r = 5/2

A = πr²

A = 25/4 pi units²

Let’s calculate the common difference (c):

c = f(n + 1) – f(n)

9, –1, –11, –21, …

-1 – 9 = -10

-11 – (-1) = -11 + 1 = -10

-21 – (-11) = -21 + 11 = -10

Q2. The answer is

c)3, –2, –7, –12, …

f(n + 1) = f(n) – 5

f(n + 1) – f(n) = -5c = f(n + 1) – f(n)So, the common difference is: c = -5

Let’s check all choices:

a) c = -5 – (-1) = -5 + 1 = -4 INCORRECT

b) c = 10 – 2 = 8 INCORRECT

c) c = -2 – (-3) = -5

c = -7 – (-2) = -5

c = -12 – (-7) = -5 CORRECT

d) c = 9 – 4 = 5 INCORRECT

ince the exam creator claims that on the same exam, nine times out of

ten, seniors will have an average score within 6% of 80%, that means

there is a 90% confidence interval.

9 / 10 = .90 = 90%

90% = 1.645

1.645 * .9 = 1.4805

Margin of Error – 1.4805

and The margin of error is the distance from x-bar, the center of the

confidence interval ,to the end of the interval. This distance is 6% of

80% which is given by:

80×6100=4.8

Therefore the margin of error is 4.8% and the confidence interval is:

({80 – 4.8}%, {80 + 4.8}%)

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To solve for y in terms of x, the y variable must be alone on the left side of the equation. In the sample problem, subtract 8 from each side. The equation then becomes 4y = 1 – 5x.

The answer is choice B

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