Math Practice - Problems with Solutions
WEBA collection of mathematics problems with an answer and solution to each problem.
Quadratic Equations: Very Difficult Problems with Solutions - Math10
WEBProblem 1. Solve the equation \displaystyle \frac {5} {2-x}+\frac {x-5} {x+2}+\frac {3x+8} {x^2-4}=0 2−x5 + x+2x−5 + x2 −43x+8 = 0. In the answer box, write the roots separated by a comma. The equation is defined for them, so they are both solutions.
Quadratic Equations: Problems with Solutions - Math10
WEBFind the solutions to the quadratic equation \displaystyle x^2-13x+12=0 x2 −13x+12 = 0. Write them separated by commas in the answer box. Find the roots of the equation \displaystyle x^2-7x+12=0 x2 −7x+12 = 0. Write them in the answer box, separated by a …
Free Math Tests, Math Quizzes
WEBFree math tests for every grade. Test yourself on calculating numbers, fractions, angles, areas, volumes, pythagorean theorem and etc.
Online Math Problem Solver
WEBOnline Pre-Algebra (Geometry) Solver. You can solve all problems from the basic math section plus solving simple equations, inequalities and coordinate plane problems. You can also evaluate expressions, factor polynomials, combine/multiply/divide expressions.
Math Word Problems and Solutions - Distance, Speed, Time
WEBMath Word Problems and Solutions - Distance, Speed, Time. Problem 1 A salesman sold twice as much pears in the afternoon than in the morning. If he sold 360 kilograms of pears that day, how many kilograms did he sell in the morning and how many in the afternoon?
Percents, Percentage: Problems with Solutions - Math10
WEBPercents: Problems with Solutions. Catalin David. Problem 1. Express \displaystyle \frac {2} {5} 52 as a percent. which means "on 100", which is why to express a fraction to a percent, Problem 2. Express \displaystyle \frac {1} {4} 41 as a percent. Problem 3.
Slope of a line: Problems with Solutions - Math10
WEBProblem 4 Find the slope of a straight line that passes through the points $(1,3)$ and $(-1,-1)$. Solution: The line slope is given by the formula $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ $m=\frac{-1-3}{-1-1}=\frac{-4}{-2}=2$
Trigonometry Problems: Very Difficult Problems with Solutions
WEBProblem 1 If [tex]x+y+z=\pi[/tex] prove the trigonometric identity [tex]cot{\frac{x}{2}}+cot{\frac{y}{2}}+cotg\frac{z}{2}=cot{\frac{x}{2}}cot{\frac{y}{2}}cot{\frac{z}{2}}[/tex] Solution: [tex]x+y+z=\pi[/tex], so [tex]{\frac{x}{2}}+{\frac{y}{2}}={\frac{\pi}{2}}-{\frac{z}{2}}; {\frac{z}{2}}={\frac{\pi}{2}}-({\frac{x}{2}}+{\frac{y}{2}})[/tex].
Trigonometry Problems: Problems with Solutions - Math10
WEBProblem 7. Find \displaystyle \cos\alpha cosα, \displaystyle \tan\alpha tanα, \displaystyle \cot\alpha cotα, if \displaystyle \sin\alpha = {\frac {5} {13}} sinα = 135 and \displaystyle {\frac {\pi} {2}} < \alpha < \pi 2π <α <π.