What is the value of x if (15*sqrt(x)) / sqrt(5) = 6*sqrt(5)
Note: sqrt means square root, and * means multiply method (overall aim is to make x the subject): multiply both sides by sqrt(5) to get: 15 * sqrt(x) = 6 * 5further expand the right hand side to get: 15 * sqrt(x) = 30divide both sides by 15 to get: sqrt(x) = 2square both sides to find x: x = 4answer: 4
CA
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All answers ▸There are 720 boys in a school and 700 girls. The probability that a girl chosen at random studies french is 3/5 and the probability that a boy chosen at random studies french is 2/3. What is the total number of students in the school that study french?
Solve algabraically: 6a+b=16 and 5a-2b=19
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solve this simulatneous equations (with clear algebraic working) : 5x-2y = 33 , 5x + 8y = 18