Math Help . 4 Questions

MATH HELP!!! 2 questions!?

1. 4=2logb(9), 2=logb(9), b^2=9, b=3, ans:D

2. t3=ar^2=144; t6=ar^5=486, t6/t3= r^3=27/8, therefore r=3/2

3. a=144/(3/2)^2=64

4. t8=ar^7=64*(3/2)^7=1093.5 (answer:D)

Math help, 4 questions?

1)Assume that you have a committee of 15 members, made up of 3 men and 12 women.

In how many ways can the 3 tasks be assigned so that both men and women are given assignments?

2)Assume that the committee consists of 15 members including Bill. The same three offices are to be filled.

In how many of these ways is Bill an officer?

3)Assume that there are 6 unfilled roles: 3 male and 3 female. There are 4 men and 4 women, including Jane, auditioning for a part in the play.
How many of these casts include Jane?

4)Assume that the producer has 7 skits and 7 commercials available.

In how many ways can the producer create a television show?

formula//straight answers all work.

Consumer math help, 4 questions?

1. A house is used as ___ for a loan
A. An asset
B. Security
C. Insurance
D. Collateral

2. Most credit cards are ___ debt.
A. Unsecured
B. Secured
C. Collateral
D. Realized

3. You have a balance of 1,678.00 on a credit card with a 15.75% APR. how much interest is accrued if you pay nothing on the principal after 3 months?
A. $22.02
B.$66.07
C. $264.29
D. $88.10

4. Ou carry a balance of $2,065.00 on a credit card at 17.25% APR for 5 months. How much is your total payment for the fifth month?
A. $2,094.68
B.$2,213.42
C.$2,421.21
D.$2,077.37

Math help 4 questions best answer?

Finish writing the equation of the line Y=-1/2x+? given the points (8, -3) and (-2, 2). Type only the part that is missing in the equation.

2) To graph the equation y= -1/2x+3 using the slope and y-intercept, you would have to do which of the following?

Graph the y-intercept, 3. From that point, move down 1 and to the right 2 to plot another point. Then draw a line that passes through both points.

Graph the y-intercept, -3. From that point, move up 1 and to the right 2 to plot another point. Then draw a line that passes through both points.

Graph the y-intercept, 3. From that point, move up 1 and to the right 2 to plot another point. Then draw a line that passes through both points.

3)The graph of the equation x = 8 is horizontal.

I no this is false but can someone please tell me wwhy is it?


4) The inverse of the function y = 3x + 7 is . y=x-7/3

can someone please tell me why is this true?

Math Question (4 Questions)?

1.
Chance of winning if it snows: 40%
Chance of snow: 60%
60% of 40% = (.6)(.4) = .24 = 24%

2.
Female: 62%
Females in competetive sport: 35%
35% of 62% = (.35)(.62) = .217 = 21.7%

With percent problems like this, you can do them in two parts. If you pretend your original population is 100, you can see the final result. In #2, pretend the senior class has 100 students. How many are female? It says 62%, then 62 are female. Of the 62 female students, how many plays competetive sport? The question states 35% of the females (which we now say number 62) plays a competitive sport. So, find 35% of 62 ==> (.35)(62) = 21.7%

3.
First find the mean:
(51.8 + 53.6 + 54.7 + 50.9 + 55.2 + 51.1)/6
= (317.3)/6
=52.88

S = standard deviation
S = sqrt((sum (X-M)^2)/(n-1))

X = Individual data values
M = mean of all data
n = number of data points = 6

sum (X-M)^2 = (51.8 - 52.88)^2 + (53.6 - 52.88)^2 + (54.7 - 52.88)^2 + (50.9 - 52.88)^2 + (55.2 - 52.88)^2 + (51.1 - 52.88)^2

sum (X-M)^2 = (-1.08)^2 + (.72)^2 + (1.82)^2 + (-1.98)^2 + (2.32)^2 + (-1.78)^2

sum (X-M)^2 = 17.47

S = sqrt((sum (X-M)^2)/(n-1))
S = sqrt(17.47/(6-1))
S = sqrt(17.47/5)
S = 1.87

Within S: 51.8, 53.6, 54.7, 51.1

4.
95% of all scores will fall within 2 standard deviation of the mean, that leaves 5% to fall beyond. If 1/2 score below and 1/2 score above, then 2.5% of the group should score above 96.

(240)(.025) = 6 students should score above 96.

I got the 95% value on one of the many website hits I got when I googled "standard deviation"

Math help 4 questions ill give lots of points : )?

Use the quadratic formula to solve 2y^2 - 6y - 8 = 0

A.{- 4 , - 1}

B.{4, - 1}

C.{ - 4, 1 }

D. {4 , 1}
______________________________________...
Use the quadratic formula to solve 2y^2 - 3y - 2= 0

A.{ - 1/2 , 2}

B.{ - 1/2 , - 2}

C.{ 1/2 , 2 }

D.{ 1/2 , -2 }
______________________________________...
Use the quadratic formula to solve X ^2 + 8x +9 = 0
Estimate irrational solutions to the nearest tenth.

A.{- 18, 10}

B.{ - 13.3 , -2.7 }

C. {- 3.7 ,14.3}

D. { - 6.6 , -1.4 }
______________________________________...
What is the discriminant for the following equation?

24x ^2 + 13 x=0

A. 73

B.524

C.169

D.265