01/07/16
He has 60 ounces of a 20% gold alloy and mixs it with 30% gold alloy to get a 24% gold alloy. How many ounces of the 30% gold alloy did he use?
He has 60 ounces of a 20% gold alloy and mixs it with 30% gold alloy to get a 24% gold alloy. How many ounces of the 30% gold alloy did he use?
01/07/16
for the matrix
A =[aij]= -8 1 5
15 15 -8
3 14 -4
a) find the minor of the element a21
b) find the co-factor of the...
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01/06/16
Write cos(theta) in terms of sin(theta) only
I need to express cos(theta) in terms of sin(theta) only. Thank you in advance for your help.
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01/06/16
I have 55 gallons of a solution that is 70% glycol and 30% water.
How many gallons of water do we add to make the solution 50/50?
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5
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Find Sf/Sx and Sf/Sy for f=1/2x-3y
Calculus 3: Functions of two Variables involving limits if i am not mistaken. It has to be solved using these two formulas.
1: Sf/Sx=fx(x,y)=lim f(x+Sx,y)-f(x,y) then the whole thing divide by...
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01/05/16
Regarding area sector and arc length
The rear windshield wiper blade on a car has a length of 8 inches. The blade is mounted on a 11 inch arm, 3 inches from the pivot point. If the wiper turns through an angle of 150 degrees, how...
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01/05/16
Nina’s toy boat travels 6 miles per hour in still water. It travels 1/4 mile upstream and back in a total time of 30 minutes. What is the speed of the current
Nina’s toy boat travels 6 miles per hour in still water. It travels 1/4 mile upstream and back in a total time of 30 minutes. What is the speed of the current, rounded to the nearest tenth miles...
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01/05/16
In a company with 330 employees, the ratio of men to women is 6 to 5. How many of the employees are men?
In a company with 330 employees, the ratio of men to women is 6 to 5. How many of the employees are men?
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01/04/16
What is the largest area that can be enclosed?
You have 200 yards of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area....
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01/04/16
A line with the slope of 3 goes through the point (-2,-4) it Alvaro goes the point (0,p). What is the value of p
I don't know how to find the value of p
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01/04/16
How could the definite integral be used to determine profit over a given period?
How could the definite integral be used to determine profit over a given period?
01/04/16
Transforming Polynomial Functions
Identify the function that vertically stretches f(x)=-4x^3+1 by a factor of 2 and shifts 7 units left.
h(x)=-8(x-7)^3+1
h(x)=-8(x+7)^3+1
h(x)=-8(x-7)^3+2
h(x)=-8(x+7)^3+2
If f is continuous and ? (0 to 81) f(x) dx = 14, find ? (0 to 9) xf(x^2) dx
If f is continuous and
∫ (0 to 81) f(x) dx = 14,find∫ (0 to 9) xf(x^2) dx
01/03/16
HELP PLEASE!!!
F(x)= (1-e2x)/(1-ex). What value must be assigned to f(x) at x=0 to make f(x) continuous at x=0?
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01/03/16
Find Coordinates
find the coordinates of all points where the curve of x2-xy+y2=1 has vertical tangents.
01/03/16
AP Calculus
If F(x) and g(x) are differentiable functions and F(3)=5 F'(3)=-7 g(3)=-1 g'(3)=4, find the derivative of fg at x=3
01/03/16
Finding a tangent point to a curve given the x-intercept of the tangent line?
The line tangent to the graph of f at the point (k,f(x)) intercepts the x-axis at x=4. What is the value of K if f(x)=12-x^2 for x is greater than or equal to 0 and f(x) is greater than or equal to...
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01/03/16
the sum of the digits of a two digit number is one-fifth the value of the number. The tens digit is one less than the ones digit. What is the two digit number
the sum of the digits of a two digit number is one-fifth the value of the number. The tens digit is one less than the ones digit. What is the two digit number
01/02/16
what happens to the coordinates when i reflect over the y axis (3,2)
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj...
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01/02/16
polynomial that satisfies
Write a polynomial f(x) that satisfies the given conditions.
Polynomial of lowest degree with zeros of 5/3 (multiplicity 2) and - 1/4 (multiplicity 1) and with f(0) = -50
f(x) =
01/02/16
Law of Sines question
sin14°13'36" = sinX
803.94 1879.2
X=35°03'44"
This seems to be correct, but in the problem that I was doing, it was the complimentary angle of 144°56'12" that was the right one...
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01/02/16
I would like examples how to resolve problems like this: "the graph of y =log(1/x)"
I would like examples how to resolve problems like this: "the graph of y =log(1/x)" step by step
01/01/16
three consecutive integers such that twice the smallest plus three times the middle is equal to 22 less than 6 times the lasrgest
three consecutive integers such that twice the smallest plus three times the middle is equal to 22 less than 6 times the lasrgest
01/01/16
Polynomial conditions
Write a polynomial f(x) that meets the given conditions.
Degree 3 polynomial with leading coefficient of 1 and zeros of 1 , 3 and -5.
f(x)=
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