04/15/20

Find the exact value of sin(x-y) if tan(x) = -1/4, tan(y) = -1/5, x is in quadrant II, and y is in quadrant IV.
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04/15/20

Find the exact value of sin(2x) assuming that sin(x) = -5/13 and that π < x < 3π/2
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04/15/20

John worked a total of 12 hours babysitting and tutoring

He made $8.00 an hour babysitting He made $15 an hour tutoring John made a total of $131.00How many hours did he spend tutoring?
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04/14/20

For what values of a and b is the line 4x + y = b tangent to the parabola y = ax^2 when x = 4?
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04/13/20

what is the volume of a hemisphere with a diameter of 6.7 ft rounded to the nearest tenth of a cubic foot

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04/13/20

i really need help with this type of algebra question please help
A circus charges $5 per child ticket and $8 per adult ticket. There were 136 tickets sold for a total of $830. How many child tickets and how many adult tickets were purchased?
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04/13/20

Algebra Problem:
Divide 64x3 - 27y3 by 4x - 3y(A) 16x2-9y2(B) 16x2+ 9y2(C) 16x2-48x2y+12xy-36xy2+9y2(D) (4x-3y)2(E) None of the above For this I got; (E) None of the above. Is this correct?
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04/13/20

f(x) = 1 − x2/3 Find f(−1) and f(1).

Consider the following function.f(x) = 1 − x2/3Find f(−1) and f(1). f(−1)  =    f(1)  =    Find all values c in (−1, 1) such that f '(c) = 0. (Enter your answers as a comma-separated... more
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04/13/20

How do you find the power series and the interval of convergence for f(x)=1/(1-x^2)
How do you find the power series and the interval of convergence for f(x)=1/(1-x^2)
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04/13/20

How do you find the power series and the interval of convergence for f(x)=1/(1-2x)
How do you find the power series and the interval of convergence for f(x)=1/(1-2x)
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04/12/20

Polynomial functions
Describe the left and right behaviors of the following functions.f(x) = 2x^5 + 3x^2 - x + 5f(x) = 14x^2 + 7x^3f(x) = -(x + 3) ^3 (x-4)f(x) = -0.2x^5 + 6x^3 - x^2f(x) = -x^3 + 3x^2 + 12x^6 -8f(x) +... more
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04/11/20

Find two positive numbers satisfying the given requirements
The product is 204 and the sum is a minimum.Smaller value:Bigger value:
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04/11/20

Fraction Decimal
The City Cabs charge $1.20 for the first quarter of a mile, and $0.35 for each additional quarter of a mile. What is the cost of a trip from the airport to the city centre, a distance of eight and... more
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04/10/20

Find the dimensions of a Norman window of maximum area if the total perimeter is 28 feet.
A Norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window (see figure). Find the dimensions of a Norman window of maximum area if the total perimeter... more
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04/10/20

What should the dimensions of the poster be so that the least amount of poster is used?
A rectangular poster is to contain 882 square inches of print. The margins at the top and bottom of the poster are to be 2 inches, and the margins on the left and right are to be 1 inch. What... more
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04/10/20

Suppose that f(x) is a function with f(115)=61 and f′(115)=2. Estimate f(116). // f(116) =...?
Suppose that f(x) is a function with f(115)=61 and f′(115)=2. Estimate f(116). f(116) =...?
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04/10/20

find the expression for secθ given tanθ
Suppose that tanθ=1/ z Find an expression in z for secθ.
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04/10/20

need help with these questions

1)  Find the measure of <A in ΔABC where a = 29.6,        b = 30.8, and <B = 53.9°.2)  Find the measure of <A in ΔABC where a = 3.42,   b = 3.89, and c = 2.95.3)  Determine the... more
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04/10/20

precalculus questions
Find the measures of angles A, B, and C if: a = 31, b= 58, and c = 36.sin(sec−1(−2.6)) =(Hint: 13÷5=2.6)sec−1(sec(330°)) =
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04/09/20

calculus, area, derivatives

 A fence is to be built to enclose a rectangular area of 280 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side... more
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04/09/20

area calculus derivative
An open box is to be made out of a 12-inch by 20-inch piece of cardboard by cutting out squares of equal size from the four corners and bending up the sides. Find the dimensions of the resulting... more
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04/09/20

Two planes leave an airport at the same time. Their speeds are 130 miles per hour and 180 miles per hour, and the angle between their courses is 48°. How far apart are they after 1.5 hours?
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04/09/20

A woman entering an outside glass elevator

A woman entering an outside glass elevator on the ground floor of a hotel glances up to the top of the building across the street and notices that the angle of elevation is 53°. She rides the... more
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04/09/20

Find the height of the antenna. (Hint: Find x first.)
A man standing near a radio station antenna sees the angle of elevation to the top of the antenna is A = 62°. He then walks s = 110 feet further away and observes that the angle of elevation to... more
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04/08/20

NEED HELP!! PLEASE PLEASE HELP! NEED HELP WITH GEOMETRY HOMEWORK!
Identify the area of the polygon with vertices B(3,2), C(7,−2), D(2,−4), and E(1,−2). Please give the explanation and the answer.
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