4th quarter review

Question 1

What is the value of log5(1/125) ?

Accepted Answer

-3

Question 2

What is the combination of 5 items chosen 2 at a time, i.e. 5C2 ?

Accepted Answer

10

Question 3

What is the answer to this summation series that ranges from 1 to 5: Σ(x2)?

Accepted Answer

55

Question 4

For the integers 1 to 7, what is the summation for: Σ (2x+1)

Accepted Answer

63

Question 5

Solve for x: 8=(1/16)x+2

Accepted Answer

-11/4

Question 6

If f(x)=x2, if x>2; f(x)=3x-4, if x=2; f(x)=8/(x-3), if x<2........find f(-1)

Accepted Answer

-2

Question 7

If you are tossing 2 dice, what is the probability that you'll roll a sum of 7?

Accepted Answer

1/6

Question 8

Which of the following represents the product of two functions?

Accepted Answer

(fg)x

Question 9

Simplify: 2i16+ 3i27

Accepted Answer

2-3i

Question 10

What is the value of cot 3150 ?

Accepted Answer

-1

Question 11

In a normal distribution w/ μ=5, δ=2, what is the z-score for the value of 7.5?

Accepted Answer

1.25

Question 12

The base of a common log is what number?

Accepted Answer

10

Question 13

In the arithmetic series -1,2,5,8,11,14,... what common difference is there between each term?

Accepted Answer

3

Question 14

What represents the domain for (f+g)x=17/(x-4)

Accepted Answer

All real numbers, x≠4

Question 15

What is the sin (240)0 ?

Accepted Answer

-√3/2

Question 16

In a normally distributed graph, what is the area under the curve for values within ±2δ ?

Accepted Answer

95%

Question 17

If angle θ is in quadrant III, and has a point at (-5,-12) triangle, what is sine θ?

Accepted Answer

-12/13

Question 18

What is the sin(150)0 ?

Accepted Answer

1/2

Question 19

What is the value of i51 ?

Accepted Answer

-i

Question 20

Number of 5-# License plates are possible with 3 numbers & 2 letters, if items can be repeated?

Accepted Answer

676,000

Question 21

When tossing 3 coins, what is the probability of getting at least 2 heads?

Accepted Answer

1/2

Question 22

Solve for x: 500(e.035t)=1500

Accepted Answer

31.39

Question 23

With a 52-card deck, find P(red card, then an Ace card) if this is done "with replacement"?

Accepted Answer

1/26

Question 24

Evaluate (4+5i)2

Accepted Answer

-9+40i

Question 25

From a standard deck of cards, what is the probability of choosing a red card?

Accepted Answer

1/2

Question 26

What is 8C5 ?

Accepted Answer

56

Question 27

How big is the sample size you'd get from tossing 4 coins?

Accepted Answer

16

Question 28

From a standard 52-card deck, find P(drawing a king face card).

Accepted Answer

1/13

Question 29

How many ordered arrangements can you make with 8 items placed in groups of 4

Accepted Answer

1680

Question 30

If normal distrib with μ= 10 and δ =1, what is the probability of a value between 9.5 and 11.5?

Accepted Answer

62.5%

4th quarter review

Questions 30

4th quarter review

Questions 30