# Real numbers - math problems

#### Number of problems found: 94

- Reciprocal

Calculate the reciprocal numbers for the given real numbers. - Exponential equation

Solve exponential equation (in real numbers): 9^{8x-2}=9 - Open intervals

Open intervals A = (x-2; 2x-1) and B = (3x-4; 4) are given. Find the largest real number for which A ⊂ B applies. - Mixing operations with numbers

Subtract twice the number -23.6 from the difference of the numbers -130 and -40.2. - Quadratic equation

Determine the numbers b, c that the numbers x_{1}= -1 and x_{2}= 3 were roots of quadratic equation: ? - Imaginary numbers

Find two imaginary numbers whose sum is a real number. How are the two imaginary numbers related? What is its sum? - Distance of numbers

Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis? - Biquadratic

By introducing a new variable solve biquadratic equation: ? - Logarithmic equation

Solve equation: log_{13}(7x + 12) = 0 - Factors

Can the expression ? be factored into rational factors? - Root

Use law of square roots roots: ? - Real estate

The 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 these three numbers. - Cotangent

If the angle α is acute, and cotan α = 1/3. Determine the value of sin α, cos α, tg α. - Cube root

Find cube root of 18 - Coordinate

Determine missing coordinate of the point M [x, 120] of the graph of the function f bv rule: y = 5^{x} - Geometric mean

Calculate the geometric mean of numbers a=15.2 and b=25.6. Determine the mean by construction where a and b are the length of the lines. - Events

Event P has probability of 0.84. What is the probability that the event P occurs in 3, 5, 7 try. - Trigonometric functions

In the right triangle is: ? Find the value of s and c: ? ? - Slope

What is the slope of a line with an inclination 6.06 rad? - Circle

From the equation of a circle: ? Calculate the coordinates of the center of the circle S[x_{0}, y_{0}] and radius of the circle r.

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