02/28/15

Applications - Probability
Answer the following questions using the information given in the table below. The table is based on the assumption that 2% of breast tumors are malignant. This table also assumes that mammogram... more
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02/28/15

Probability
If there are 42 students in your class, what is the probability that at least one of them shares your birthday?
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02/28/15

finding molecular formula
A is a compound of molecular formula RCOOH, where R contains C and H only. On complete combustion A gave CO2 and H2O in the mass ratio of 44:9. The r.m.m. of A is approximately 160. Determine the... more
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02/28/15

question on chemical calculations, calculating molecular formula
An organic compound contains only C, H and O. If the percentage of carbon by mass is 48.65% and the r.m.m. of the compound is 74, calculate the molecular formula of this compound.    Please help... more
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02/27/15

Question Three
Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 534 N at an angle of 26? with respect to the direction in which the truck is headed,... more
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02/27/15

What does y+9y equal?
This propably sounds dumb but is the answer to y+9y 10y or 9y :) 
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02/27/15

Algebra 1 Word Problem for Time * Distance = Rate
Sue and Lois live 13.5 km apart. At 10:00 each girl leaves her house and jogs toward the other. Sue jogs for 7.5 km and Lois jogs 6km. If the girls meet at 11:15 AM, how fast does each jog?
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02/27/15

what is the slope of the line that passes through (-3, 1) and (2, 3)
I need help doing this.
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02/27/15

Modern Geometry
Find the value if AC = 3y + 5. CB = 4y - 1, AB= 9y - 12, and point C is between A & B.
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02/27/15

what's an equivalent Expression for 5[x+3]-2
i don't know it
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02/27/15

-+-+- =30 fill the blank using1,3,5,7,9,11,13,15
u can use one number twice
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02/27/15

find the lateral area, total area and volume of a frustum of the right circular cone if the slant height is 15 cm and the radii of the bases are 12 cm and 18 cm
is there a difference in formula in case of right frustum of a cone and frustum of a right circular cone ? 
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02/27/15

Knowing that her season average is 55%, what is the probability that she will get two points?
Suppose a women’s college basketball player is fouled in a one-and-one situation (meaning she is awarded two free throws only if she makes her first one and awarded one point for each shot made).
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02/26/15

Rewrite with only sinx & cosx
sin2x-cos3x
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02/26/15

college Algebra
Determine whether the function is one-to-one. (If it is not, provide an example of an two different x-values giving the same y-value).   F(x)= 3x/x-2
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02/26/15

Hmmmmmm. Whats the best number and why? THANK YOU IN ADVANCE!
Two players alternately name a number from 1, 2, 3, 4, 5. The first player to bring a combined total of all the numbers announced to 31 wins. What is the best number to announce if you go first?... more
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02/26/15

write a rule for the following function
i need to write the rule for the following function x=-1,0,1,2 y=1/24,1/6,2/3,2 2/3  
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02/26/15

Which method would you prefer to use to solve the system
7x-y=-25 2x+5y=14   Systems of linear equations and inequalities
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02/26/15

Solve the equation below, show all steps please
√x+1 - √x-2 =1
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02/26/15

EITHER/OR Probabilities
1) In your math class there are 16 boys and 21 girls. 9 of the boys and 15 of the girls are freshmen. If you randomly choose a student in your class, what is the probability that you'll choose a... more
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02/26/15

Determining odd integers.
How would I solve this?   Three consecutive odd integers are such that the sum of the squares of the first two integers is 54 more than 20 times the third integer. Determine the three integers.
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02/26/15

What are the possible number of positive real, negative real, and complex zeros of f(x) = -7x4 - 12x3 + 9x2 - 17x + 3?
What are the possible number of positive real, negative real, and complex zeros of f(x) = -7x4 - 12x3 + 9x2 - 17x + 3?   Choose one answer. A. Positive Real: 3 or 1Negative Real: 1Complex: 2 or 0... more
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02/26/15

(3K)^0K^-3/K^6H^-9
COULD YOU PLEASE HELP ME OUT TO SIMPLIFY THIS EXPRESSION thank you so much
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02/26/15

What is the probability that both of the tickets you receive are in the front row?
your friend who has tickets to a concert and who selects 2 of them at random to give to you, but assume that your friend has 13 tickets of which 5 are in the front row and 8 are in the tenth row.... more
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02/26/15

Can you help me simplify this?
1) 6x^7/3x^4 (6x to the power of 7 over 3x to the power of 4)   2) In parenthesis the 3rd root of 125 and outside of that equation/ parenthesis is the exponent of 4
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