04/29/15

compound contains 3.2% of oxygen the minimum mol weight of the compound is?
pls also explain how you solved this problem.
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04/29/15

What are the x-intercepts of the graph of f(x) = 2 sin(3x) + rad3 on the interval [0, 2theta]?
 I'm still new and confused with sin graphs. I know the answer is 4pi/9, 5pi/9, 10pi/9, 11pi/9, 16pi/9, 17pi/9 but unsure of how the denominator got to be 9.   thank you!
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04/29/15

URGENT! NEED STATS HELP...
Fingerprint expertiseRefer to the Psychological Science (August 2011) study of fingerprint identification. The study found that when presented with prints from the same individual, a fingerprint... more
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04/28/15

let u=lna, v=lnb, w=lnc. for number 1 rewrite each without using the ln function
1.) ln(a2c4/b5)    
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04/28/15

solve the logarithmic equation
1.) log3(x-3)=1+log3(x+1)   2.)lne3x-27=log1  
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04/28/15

solve the exponential equation
(1/4)-2x=64
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04/28/15

Music/Math Question
Several months in advance, a festival books a band to play. At the moment that the band is booked, the festival figures that there is a 3/8 chance that the festival will be cancelled, and the band... more
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04/28/15

A certain radioactive isotope decays at a rate of 0.225% annually. Determine he half-life of this isotope, to the nearest year
I need help on how to solve this problem. I am very confused and I need help !!!!!
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04/28/15

help! Solve this Algebra 2 problem??
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two... more
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04/28/15

Prove the identities tan ? + cot ? = csc ?/cos ?
So lost 
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04/28/15

tan ?+ 2 cot ? = (sin^2 ? + 2 cos^2 ?)/( sin ? cos ?)
I am so confused
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04/25/15

Jeff is designing the seating arrangement for a concert in his high school theater. To give everyone a good view, each row must have 5 more seats than the row b
Help Jeff plan the rest of the seating by solving for how many seats are in row 25. Then explain to Jeff how to create an equation to predict the number of seats in any row. Show your work, and use... more
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04/23/15

Interest/Expected value
Assume 5 out of every 3000 students at a local community college have to quit due to health issues. AN insurance company offers them a $9,000 policy for $50 a year. What is the amount the insurance... more
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04/23/15

If i = v-1, then (i + 1)(6i – 10) is equivalent to
If i = v-1, then (i + 1)(6i – 10) is equivalent to
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04/23/15

If f(x) and g(x) are two functions defined by f(x) = v(x + 1), g(x) = | x - 1 |, then what is the value of f(g(9))?
If f(x) and g(x) are two functions defined by f(x) = v(x + 1), g(x) = | x - 1 |, then what is the value of f(g(9))?
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04/23/15

find solution cos x + 1 = 2 cos x
I need to fugure this out
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04/22/15

If exactly half of the students each get 6 additional points, by how many points would the mean increase?
The mean grade for the class is 73.
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04/22/15

Suppose that u varies directly as the square root of x, and that y=32 when x=9. What is y when x=19 (round to two decimal places)
Suppose that u varies directly as the square root of x, and that y=32 when x=9. What is y when x=19 (round to two decimal places)
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04/22/15

What is the slope of the line passing through the points (2, 5) and (0, –4)? (Points : 1)
I am bad at slopes and graphs 
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04/22/15

word problem
from a group of boys and girls. 15 girls leave there are then left 2 boys for each girl. after this 45 boys leave. there are then 5 girls for each boy find the number of girls in the... more
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04/22/15

The gravitational force, F, between an object and the earth is inversely proportional to the square of the distance from the object and the center of the earth.
The gravitational force, F, between an object and the earth is inversely proportional to the square of the distance from the object and the center of the earth. If an astronaut weighs 184 pounds on... more
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04/22/15

Is this sentence written correctly?
I'm writing an essay and having issues. My writing tends to sound awkward. This was my first draft of the sentence: "His father worries Henry has a death wish and asks the narrator, who seems to... more
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04/22/15

Help with Algebraic Functions word problem.
Karen bakes cookies. She has observed that the number of cookies that turn out well in each batch varies with the size of the batch and is given by the function f(x) = 2x – 23, where x is the size... more
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04/21/15

what does my soul has grown deep like rivers
What does it mean my soul has grown deep like rivers
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04/21/15

Y-intercept in the function6(y+2)=3(x-2)?
6(y+2=3(x-2)?
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