Equation + real numbers - math problems
Number of problems found: 32
- Exponential equation
Solve exponential equation (in real numbers): 98x-2=9
- Quadratic equation
Determine the numbers b, c that the numbers x1 = -1 and x2 = 3 were roots of quadratic equation: ?
- Logarithmic equation
Solve equation: log33(3x + 21) = 0
- Equation with abs value
How many solutions has the equation ? in the real numbers?
By introducing a new variable solve biquadratic equation: ?
Eequation f(x) = 0 has roots x1 = 64, x2 = 100, x3 = 25, x4 = 49. How many roots have equation f(x2) = 0 ?
- Real estate
Residential house has three entrances numbered by odd numbers arithmetic progression. The sum of the two numbers on the corner entrances is 50. Calculate the highest of this three numbers.
From the equation of a circle: ? Calculate the coordinates of the center of the circle S[x0, y0] and radius of the circle r.
Determine missing coordinate of the point M [x, 120] of the graph of the function f bv rule: y = 5x
Can the expression ? be factored into rational factors?
- Domains of functions
F(x)=x2-7x and g(x)=5-x2 Domain of (fg)(x) is. .. . . Domain of (f/g)(x). ..
Calculate how many average minutes a year is a webserver is unavailable, the availability is 99.99%.
Write the equation of a circle that passes through the point [0,6] and touch the X-axis point [5,0]: ?
Right triangle has hypotenuse c = 27 cm. How large sections cuts height hc=3 cm on the hypotenuse c?
In rectangle ABCD with sides |AB|=19, |AD|=16 is from point A guided perpendicular to the diagonal BD, which intersects at point P. Determine the ratio ?.
Calculate the sides of a right triangle if the length of the medians to the legs are ta = 21 cm and tb=12 cm.
The tank is filled with two pumps in 16 minutes. The first pump is filled in 30 minutes earlier than two one. How many minutes is filled with the first pump?
Two resistors connected in series give the resulting resistance 65Ω and 10.4Ω in parallel. Determine the resistance of these resistors.
The crystal grows every month 1.2 permille of its mass. For how many months to grow a crystal from weight 177 g to 384 g?
- Triangle ABC
Calculate the sides of triangle ABC with area 1404 cm2 and if a: b: c = 12:7:18
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?