Mathematics

Easy GCSE question, please help

The costs , in pounds , of buying time on a satellite link can be worked out using this rule add 3 to the number of hours bought multiply your answer by 1000 A) The cost of buying n hours of satelli

Please explain integration by parts y= x^(3)e^(x^2)

Hello, ∫ x³ e^(x²) dx = make a substitution, first; rewrite the integral as: ∫ x² e^(x²) x dx = let: x² = t differentiate both sides: d(x²) = dt 2x dx = dt x dx = (1/2) dt then, substituting

Kevin takes 12h to shovel, dave 8h, john 6h, allison 4h. if they work together how many minutes will they need

To shovel all of the snow, Kevin needs 12 hours, Dave needs 8 hours, John needs 6 hours, and Allison needs 5 hours. If they work together, how many minutes do they need to shovel all of Kevins snow?

Inequalities 7X+1/X-1≤9

Please show mw the steps the answer is x-For x > 1, we see that: (7x + 1)/(x - 1) ≤ 9 ==> 7x + 1 ≤ 9(x - 1), since x - 1 > 0 for x > 1 ==> 7x + 1 ≤ 9x - 9 ==> 2x ≥ 10 ==> x ≥ 5. Then, for x (7x + 1)

Find the x and y intercepts of the function

Find the x and y intercepts of the given function? f(x) = 5x^2 - 2x - 4. Can someone help?-the y-intercept would be the constant (c) factor and solve for the for the x-intercepts. If you cant facto

Decide whether to integrate with with respect to x or y. Then find the area of the region.

Sketch the region enclosed by the given curves. Decide whether to integrate with with respect to x or y. Draw a typical approximating rectangle and label its height and width. Then find the area of th

What times 27,868 = 9,000,000

what number times 27,868 = 9,000,000-let the # be x , then 27,868x = 9,000,000 x = 9,000,000 /27,868 = 322.951055 -------------------- better get serious !

Write the standard form of the equation of the line with slope 2 passing through the point ( 5, - 5 )

a.) x - 2y - 15 = 0b.) 2x - y - 15 = 0c.) -x + 2y + 15 = 0d.) - 2x + y - 15 = 0-By point-slope form, we see that the equation of a line with a slope of 2 and passes through (5, -5) is: y - (-5) = 2(x

If g(x) = |x-4| and h(x)= x^3, then find (h°g)(-2) ...plz help

g(-2) = 6 h(g(-2))=h(6)=6^3 = 216-(h°g)(x)=(|x-4|)^3 So: (h°g)(-2)=(|-2-4|)^3=6^3=216 Hope this helps!

How do i solve this problem? Please Help.

Find the inverse of the function f. f(x) = x^2,x≥0 Use a graphing utility to graph both f and f-1 in the same viewing rectangle. Describe the relationship between the graphs For f(x)= x^2 i got f^-1

General solution of sinx=0

x= 2npi-The sine of an angle x is 0 at the following angles: 0, π, 2π, 3π, 4π,... So, from this you can see that the general solution is x = nπ Where n is an integer.

How to find equation of 2 circles with radius √10....

Find the equations of the two circles which pass through the points (1,2) and (-1, 4) and have a radius of length √10.-Well, good question. Took me a while to find the answer. To answer the question

Mean and standard deviation problem?!?!

Instant Dinner comes in packages with weights that are normally distributed, with a standard deviation of 0.3 oz. If 2.3% of the dinners weigh more than 13.5 oz, what is the mean weight?-P(1 - .023) =

Even or odd functions

f(x) = { x+π, x∈[-π, 0]{ -x+π, x∈(0, π) This is a piecewise function, and im aware that it is a even function, however I do not know why it is, I tried say x = π/2, hence f(x=π/2) = 3π/2,x∈[-π, 0]π

The distance traveled (in meters) by the Oregon slug can be modeled by the function f(t) = 0.3t, where t

is the time in minutes. Find the distance traveled in 29.2 minutes. a.) 0.876 metersb.) 87.6 metersc.) 8.76 meters-0.3*29.2 = 8.76-As f(t) = 0.3(t) is the formula for displacement and t = 29.2, subst