Expression of a variable from formula - examples - page 24
Mother divided her three children's oranges in a ratio of 6:5:4. Two children gave 45 oranges. How many oranges were there?
- Test scores
Jo's test scores on the first four 100 point exams are as follows: 96,90,76, and 88. If all exams are worth the same percent, what is the minimum test score necessary on his last exam to earn an A grade in the class (90% or better)?
- Simple sequence
Continue with this series of numbers: 1792,448, 112, _, _
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?
- 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?
- 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?
- Simplify 2
Simplify expression: 5ab-7+3ba-9
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
- GP members
The geometric sequence has 10 members. The last two members are 2 and -1. Which member is -1/16?
Solve for a specified variable: P=a+4b+3c, for a
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
- Evening shift
While working the evening shift, Officer K took 8 hours to complete a task at his work station and Officer M took 10 hours to complete the same task at his work station. How many hours would it take Officer K and Officer M to complete the same task working
- 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?
Given 2x =0.125 find the value of x
- Workers 9
If two workers fix two windows in an hour how many windows can 18 workers fix in the same two windows?