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f(x)=-x^2-6x find f(x-2) 2017-10-27
Kenneth pose la question :
f(x)=-x^2-6x find f(x-2)
Penny Nom lui répond.
Solve 2cos^2 x + sin x = 2 2017-10-25
Yamama pose la question :

hello ! I need help to solve this equation :

2cos^2 x + sin x = 2

Thank you very much
Regards


Penny Nom lui répond.
11% of a central angle 2017-10-22
Hope pose la question :
How do you turn a percentage in to a central angle eg. 11%
Penny Nom lui répond.
A tangent to a curve 2017-10-22
Jasem pose la question :

Suppose that
f(x)=(3x-3)^1/2.

(A) Find an equation for the tangent line to the graph of f(x) at x=2

(B) Find all values of xx where the tangent line is horizontal, and enter them as a comma-separated list (e.g., 2,-3,6). If there are none, enter none.

Values of x


Penny Nom lui répond.
Sampling distribution 2017-10-16
Esther pose la question :
I need 4digits combination of 235689 and without replacement. Thanks
Penny Nom lui répond.
Salary plus commission 2017-10-16
Natasha pose la question :
Veronika works at Future Shop and earns ₱10.50/h plus 6% commission on sales. Last week Veronika worked 40 hours. What was Veronika’s weekly gross salary if her total sales were ₱2050?
Penny Nom lui répond.
The distance between the origin and a moving point on a graph 2017-10-16
Paulina pose la question :
Find the rate of change of the distance between the origin and a moving point on the graph of y=x^2 +1 if dx/dt=2 centimeters per second
Penny Nom lui répond.
Three consecutive odd integers 2017-10-10
Johanna pose la question :
Three consecutive odd integers are such that the sum of the first and second is 31 less than 3 times the third
Penny Nom lui répond.
27000001 2017-10-09
Tulashiram pose la question :
If a× b =27000001, then what is the value of a & b ?
Penny Nom lui répond.
Five bales 2017-10-08
John pose la question :

two answers were given... I believe both to be incorrect.
five bales weighed two at a time: weightx2 given: 110,112,113,114,115,116,117,118,120, and 121. It stated all combinations ie: ab,ac,ad,ad,bc,bd,be, etc. to arrive at the above 10 combined weights. I come up with the following...

Bale A= 54lbs, Bale B=56, Bale C=58, Bale D=59. and Bale E=62 pounds.

A+B=110, A+C=112, A+D=, B+C=114, B+D=115 ,A+E=116 ,C+D=117, B+E=118 ,C+E=120, and D+E=121


Penny Nom lui répond.
An enclosure for some remote control boats 2017-10-03
Roberto pose la question :
I am trying to build a "ring" for our remote control boats, using irrigation pipe. I'd like to use full 20' long sticks for the long sides and use eight of what we call 45s, which are actually 135' fittings to make the six short sides. If I know the length of the two long sides, what would be the formula to find the exact lengths of the short sides?

Thank you.

Penny Nom lui répond.
The volume of a cone without calculus 2017-10-02
Akash pose la question :
How to find the volume of a cone without the knowledge of calculus?
Penny Nom lui répond.
The square root of 6 is irrational 2017-10-02
John pose la question :
http://mathcentral.uregina.ca/QQ/database/QQ.09.06/sylvia1.html
In the initial assumption of that proof, root 6 is assumed to be a/b where a and b have no common factors, but why does having a common factor make it irrational?

Penny Nom lui répond.
The importance of a comma 2017-09-30
carolyn pose la question :
the equation 2y + 53 = 165 represents the situation joel spent 165 dollars on a pair of jeans and two shirts at the same price what does y represent
price of a pair of jeans
price of a shirt
amount joel spent on the shirts
number of shirts joel bought

Penny Nom lui répond.
Macy and Camile's ages 2017-09-30
carolyn pose la question :
macy is 2 years older than Camille twice the sum of their ages is 52 which equation can be used to find camilles age x
Penny Nom lui répond.
 
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