03/29/15
Percentage?
The percentage score on a test varies directly as the number of correct responses. Jack answered 44 questions correctly and earned a score of 55%. What would Jack's percentage score have been if he...
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03/29/15
math problem
The Depressed Cubic The most general cubic (thirddegree)equation with rational coefficients can be writtenasx^3+ax^2+bx+c=0(a) Show that if we replace x by X a/3 and simplify, weend up with an...
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03/29/15
Math problem
Factor completely and find all zeros (comples ones too!): j(x)=x3-3x2+3x-2
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03/29/15
Fractional equations
Two numbers differ by 14. If the larger number is divided by the smaller, the quotent is 3 and the remainder is 2. Find the numbers.
03/28/15
If w(x)=5x2-5x+3,find w(5+z). Enter the expression in simplest form. The terms of the expression must be entered in descending order of degree.
If w(x)=5x^2−5x+3,find w(5+z).Enter the expression in simplest form. The terms of the expression must be entered in descending order of degree.
w(5+z)=
03/28/15
True or false? The equation x2-2+6y2=3is a function
True or false? The equation x^2−2+6y^2=3 is a function
03/26/15
precalculus honors
Find all complex numbers z such that z^2 = 2i.
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Use the explicit formula to find the first four terms of the sequence
an =(-1)n-1(-n-1)
enter the terms separated by a comma
What is the 21sr term in arithmetic sequence in which
a3 is 59 and a7 is 103
enter only the term
Write a possible explicit formula for the following sequence
-17,-22,-27,-32,...
an=?
03/26/15
z1 = 4 (cos 45° + i sin 45°) and z2 = 2 (cos 30° + i sin 30°)
Please solve: "z1 = 4 (cos 45° + i sin 45°) and z2 = 2 (cos 30° + i sin 30°). What's z1 * z2? What's z1/z2?" Did it myself but got it wrong, so please post steps so I can see where I went...
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03/26/15
express the simultaneous equations
-Χ + 2γ + 4Ζ = 7
2Χ + γ - 2Ζ = -2
-3Χ + 2Ζ = 7
in the form of a matrix equation NX=C, where N is the 3×3 matrix, X and C are suitable column matrices. Hence solve these...
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03/26/15
A right triangle has an angle of 0.37 radians. If the adjacent is 9 meters, find the length of the hypotenuse
help me please
03/26/15
A triangle has an angle of 0.61 radians. If the opposite is 13 meters, find the length of the hypotenuse.
I tried doing it but I don't know if my answers correct
03/25/15
If (x - a)(x - 1) + 1 = (x + b)(x + c) is true for all x and if a, b, and c are integers, find the sum of all possible values of a.
very hard problem you are god if you can solve this
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03/25/15
How long will it take for an initial investment of $7500, at a rate of 7.2% compounded continously, to triple? Round to the nearest tenth of a year
help help help help help help help help help help help help help help help help
03/25/15
The difference between two numbers it 72.....Details below
The difference between two numbers it 72.Which are those numbers if 4.5% of the largest number equals 8.5% of the smallest number ?
03/25/15
(x,7v3) in the second quadrant corresponds to angle ? on the unit circle.
(x,7√3) in the second quadrant corresponds to angle θ on the unit circle.
03/25/15
Singular points help
For the differential equation:2(1-x)y''-3y'+(y/x)=0What are the singular points and determine whether they are regular or irregular? Then find the roots of the indicial equationThank you to whoever...
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03/24/15
Answer this: Missouri has a shape that is similar to a trapezoid with bases 198 miles and 276 miles and a height of about 270 miles estimate
It's an estimation and I just don't get it... Help!
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