Please solve this algebra question (find the value of x) from class 8
5(- 3x - 2) - (x - 3) = -4(4x + 5) + 13
A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find the height of the pole, if the angle made by the rope with the ground level is 30°.
Find the area of a sector of a circle with a radius of 6 cm if the angle of the sector is 60°.
Find the area of a quadrant of a circle whose circumference is 22 cm?
A chord of a circle of radius 12 cm subtends an angle of 120° at the center. Find the area of the corresponding segment of the circle. (Use π = 3.14 and √3 = 1.73)
The radii of two circles are 8cm and 6cm respectively. Find the radius of the circle having an area equal to the sum of the areas of the two circles.
The radii of two circles are 19cm and 9cm respectively has a circumference equal to the sum of the circumferences of the two circles.
The sum of the reciprocals of Suprim’s ages, (in years) 3 years ago and 5 years from now is 1/3. Find his present age.
Find the roots of the following equations:
(i) x-1/x = 3, x ≠ 0
(ii) 1/x+4 – 1/x-7 = 11/30, x = -4, 7