12/06/16

If f' is continuous on [a,b], show that
2∫ab f(x)f'(x)dx=[f(b)]2-[f(a)]2
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12/06/16

Consider the area under one arch of the curve y(t) = ksin(wt)for t ≥ 0 ( How do I use substitution on this?)
Consider the area under one arch of the curve y(t) = ksin(wt)for t ≥ 0 where k and w are positive constants. Note: Use lower case k and w when needed.(a) Using the form ∫A to B ksin(wt) dt, find A... more
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12/06/16

Chances of 2 boys and 2 girls
If a couple has 4 children, what is the probability that they have exactly 2 boys and 2 girls?
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12/06/16

Do the ratios in each pair form a proportion?
1) 1/3:3, 1/4:4   2) 2/3:2/9, 1/4:1/12   3) 4/5:1/2, 2/3:1/4
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Kiu

12/05/16

if there 30 coins, all nickels and dimes, and they all equal $2.60, how many nickels are there?
kgfyvvjoyyvh vughvgug7g7gvoug hvuvvugfu7guv
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12/05/16

Larry saves 15% of his annual salary for retirement. What was his alary last year? Write an equation to represent the situation
This year Larry's salary was $2000 more than last year, and he saved $3300
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12/05/16

how many different ways can you arrange the dancers?
Holly,Paul,Anne and Jim are rehearsing a dance routine. How many different ways can you arrange the 4 dancers in a line if Anne must be first or second
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12/05/16

If f is continuous on [0,1], prove that
∫01 f(x)dx = ∫01 f(1-x)dx
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12/05/16

Yoko is paid semimonthly. How many fewer paychecks does she receive in a year compared to someone who is paid weekly?
I need help setting up the equation to solve this. 
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12/05/16

4sin2(x) + 15sin(x) - 4 = 0
Use inverse trigonometric functions to find the solutions of the equation that are in the interval [0, 2π). You may enter an exact answer or round your solutions to four decimal places. (Enter your... more
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12/05/16

One number is 3 more than 3 times another. The sum of the numbers is 11. Find the two numbers.
The two numbers are __ & __.
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12/05/16

Kindly solve out these 2 questions
Q NO. 1= The Salaries of Yasmeen and Adnan are in the ratio 1 : 2. If the salary of each is increased by Rs.3000, the new ratio becomes 40 : 57. What is Adnan's present salary?     Q NO. 2= A... more
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12/04/16

Write a rule for the nth term and find the 45th term for the arithmetic sequence with a10=1 and d = -6.
I have trouble with arithmetic sequences, could someone help me out? This is all I have so far, which isn't much at all:an = a1 + (n-1) d an = a1 + (n-1)-6
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12/04/16

Find the exact value of the area between the graphs of y = sinh x, y = cosh x, for −7 ≤ x ≤ 7.
Find the exact value of the area between the graphs of y = sinh x, y = cosh x, for −7 ≤ x ≤ 7.
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12/04/16

Rectangular Form
Find z1z2 and z1/z2. Write each answer in rectangular form.   z1=4(cos45°+isin45°), z2=2(cos15°+isin15°).   Please show step by step work to solution and provide final answer. Please and Thank... more
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12/04/16

Magnitude of Vector
Find the magnitude of the vector v=-4(cospi+sinpii)   (a) -pi  (b) pi (c) -4 (d)4   Please show step by step work to solution and provide final solution. Please and Thank You!
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12/04/16

Law of Cosines 5.2
For the triangle ABC, which of these is not a Law of Cosines?   (a) a2=b2+c2-2bc cos A   (b) b2=c2+a2- 2ac cos B   (c) c2=a2+b2-2ab cos C   (d) a2=b2+c2-2ab cos A   Please show step by... more
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12/04/16

I need help writing geometric proofs and I don't know how.
All the proofs are either you're trying to prove the figure is a parallelogram or that you're trying to prove the angles are congruent or something else. I don't really understand it and I can't... more
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12/04/16

How much miles can Dario run before he runs out of gas?
Dario’s gas tank holds 14.2 gallons of gasoline, and if he drives efficiently on the highway, he can get up to 21 miles per gallon. What is the greatest distance Dario can go before needing to add... more
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12/04/16

the sum of 3 consecutive odd numbers is 75. what is the smallest of the 3 numbers?
from math-aids.com
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12/04/16

who is the dalai lama i have to write an article in 30 min & i know nothing about him so i have few questions
1) the Western view of the Dalai Lama and how it contributed to his reputation. 2) the Chinese government’s view of the Dalai Lama and how it contributed to his reputation. 3) the interplay of... more
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12/04/16

Equation of a parabola for y=a(x-3)^2+k if it goes through (0,-16) and (2,8).
Grade 10, parabolas, find the equation problems, word problems.
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12/04/16

If a number is added to the numerator of 7/8 and twice as much is added to the denominator, the result is 8/13 . Find the number.
This word problem has is an alebraic expression. I could really use some help.
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12/04/16

If P (rain )= .245 then P (no rain ) =
What's the probability of rain not happening ?     
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12/04/16

If P (rain )= .245 then P (no rain ) =
What's the probability of rain not happening?  
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