Expression of a variable from formula - examples - page 26
How much do we pay for a bricklayer laying a pavement in a square room with a diagonal of 8 m, if 1 sqm with work will cost for CZK 420?
- Simple sequence
Continue with this series of numbers: 1792,448, 112, _, _
- Center of line segment
Calculate the distance of the point X [1,3] from the center of the line segment x = 2-6t, y = 1-4t ; t is .
- Drying herbs
Herbs lose 75% weight By drying. How many fresh herbs do you have to collect if you want to make 1.5 kg of dried herbs?
- Symmetry by plane
Determine the coordinates of a image of point A (3, -4, -6) at a symmetry that is determined by the plane x-y-4z-13 = 0
- The garden
The garden has the shape of a rectangular trapezium. The bases have lengths of 27 meters and 36 meters, the trapezoid's height is 12 meters. Calculate how much fence will cost this garden if one meter costs 1.5 €?
- Simplify 2
Simplify expression: 5ab-7+3ba-9
- Evaluation of expressions
If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
- Perimeter of a rectangle
If the perimeter of a rectangle is 114 meters and the length is twice the width plus 6 meters, what are the length and width?
- Non linear eqs
Solve the system of non-linear equations: 3x2-3x-y=-2 -6x2-x-y=-7
How deep is the pool if there are 2025 hectoliters of water and the bottom dimensions are a = 15 meters b = 7,5 meters and the water level is up to 9/10 (nine-tenths) of height.
Twenty rabbits are put in 4 cells so that there are different number of rabbits in each cell contains at least 3 rabbits. What is the largest possible number of rabbits in one cell
Solve for a specified variable: P=a+4b+3c, for a
- GP members
The geometric sequence has 10 members. The last two members are 2 and -1. Which member is -1/16?
X+y=5, find xy (find the product of x and y if x+y = 5)
- A rectangle
A rectangle has an area of 36 cm2. What could the length and width of rectangle be?
- Find the 2
Find the term independent of x in the expansion of (4x3+1/2x)8
- Expression with powers
If x-1/x=5, find the value of x4+1/x4
Three-quarters of boats are white, 1/7 are blue and 9 are red. How many boats do we have?
- Sides of triangle
Triangle circumference with two identical sides is 117cm. The third side measures 44cm. How many cms do you measure one of the same sides?