08/29/18
Find the equation of a sphere if one of it's diameters has endpoints (-10,0,-6) and (4, 14, 8).
I have written:
(x+3)2+(y-7)2+(z-1)2-sqrt(588)/2 = 0.
But it is marked incorrect.
08/29/18
Calc 4 question
Prove that for n ≥ 2∫ cos^(n)x dx = (1/n)cos^(n−1)x • sin x + (n − 1)/n • ∫ cos^(n−2)x dx
08/28/18
(x,y) ( x , y ) such that 4x+y=17 4 x + y = 17 , f x2+y2 x 2 + y 2 ,
Among all pairs of numbers (x,y)(x,y) such that 4x+y=174x+y=17, find the pair for which the sum of squares, x2+y2x2+y2, is minimum. Write your answers as fractions reduced to lowest term
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08/28/18
Assume (-2,3) is a point on the graph of f. What are the coordinates if y=-f(x/2)
Assume (-2,3) is a point on the graph of f. What are the coordinates if y=-f(x/2)
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08/28/18
Find C and A so that f(x) =ca^x satisfied the gives conditions f(0)=16 and for each unit increase in X, the output is multiplied by 2.5
c=16 I need help finding what A equals
08/28/18
Calc 4 question, please help
Suppose f : R → (0,∞) is a differentiable function such that
f(x + y) = f(x)f(y) (x, y ∈ R)
Show that there is a constant a ∈ R such that
f(x) = e^ax
08/28/18
Find the point on the 𝑥 x -axis that is equidistant from the points (7,3) ( 7 , 3 ) and (1,7) ( 1 , 7 ) .
need help. tried to use the midpoint and distance formula and nothing is working
08/27/18
The distance between two points A and B on Earth..
The distance between two points A and B on Earth is measured along a circle having center C at the center of Earth and radius equal to the distance from C to the surface (see the figure). If two...
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08/27/18
jasons age is one fourth his fathers age 28 years later jasons age will be three fifths of his fathers age how old was his father when jason was born
how to do it ans whats the answer
08/27/18
Simultaneous Equations
Form a pair of simultaneous equations and solve them to find x and y, given that they are rational:
x-2y+√x+y (whole surd as in surd x+y, not just surd x) = 1/2√6
08/27/18
a man is currently 3 times as old his son. in 11 years from now he will be twice as old as his son. how old is his son now?
this is a math question that I am confused about
08/26/18
Express the number in the form a/b, where a and b are integers. (a). 27^(−2/3) (b). 81^(5/4)
Express the number in the form a/b, where a and b are integers. (a). 27^(−2/3) (b). 81^(5/4)
08/25/18
How do you write an perpendicular line into slope intercept form with a x intercept
Write a perpendicular to y=1/2x-1, x intercept at 4 into slope intercept form. I need help because I don't know how to do it.
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08/25/18
Maria can cut a lawn and trim the hedges in 8 hours. Debbie can do the lawn and hedges in 6 hours. When Maria, Debbie, and Bill worked together it took 2 hours
Please give process. Thanks!
08/25/18
If they work simultaneously, how long will it be until the whole board is covered?
bart covers the whole board in 50 mins whereas nelson takes 80 mins to erase the board.
08/24/18
Finding delta and epsilon for a funtion
Let f(x)=3x+5. Find the largest delta so that the absolute value of f(x)-f(a) is less than epsilon when the absolute value of x-a is less than delta
08/23/18
A function f is defined by f(x)=2x^2_3x. What value of x makes f(x+h)_f(x)/h=(2h+1)
This question is related to function. Its about finding the value of x. I teach 8th grade so I need answer soon to provide them please answer me fast
cos^3(x)+sin^3(x)=sin(x)-cos(x)
cos ^ 3 (x) + sin ^ 3 (x) = sin (x) -cos (x)
08/21/18
Find all points having a y- coordinate of -3 and whose distance from point (1,2) is 3
and if possible there is one more equation like it if you could explain too...Find all points on the x-axis that are 5 units from the point (2, -30). Thank you.
08/20/18
Irrational and rational numbers
If you divide one irrational number by another irrational number will it always result in another irrational number ?
08/20/18
A car stereo has its price increased by 7.5% to $172 what’s the original price
Percentage question please show working
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