The percentage of alcohol in mixture of 3/4 liter of pure water and x liters of 8% alcohol solution.

Q: c1x1(a) + c2x2(a)+ . . . +cnxn(a) = x(a). Let X (t) be the n x n matrix with column vectors x1, x2,…

A: Given : Xt be any  matrix of n×n           : c be column with component c1 ,c2 , . . .  . . .  ,cn…

Q: How many liters of each 20% (v/v) alcohol and 80% (v/v) alcohol must be mixed to yield 20 liters of…

A: We are given two percentages of alcohol that are 20% and 80%. We have to produce 20 liters of 50%…

Q: chemist has 10 mL of a solution that contains a 30% concentration of acid. How many mL of pure acid…

A: Given that: Volume of solution =10 mLConcentration of acid in the solution = 30%

Q: You are taking an 800-mg dose of an antibiotic every 8 hours. Your body eliminates 50% of the drug…

A:

Q: Five grams of sugar are added to a 45-gram serving of a breakfast cereal that is 10% sugar. What is…

A: Amount of sugar in a 45-gram serving

Q: If BG bisects ZDGA, find the measure of each numbered angle. 1 B 115° 104 24° 2. 3

A:

Q: x² + x – 6 %3D =

A: Given equation x2+x-6  Factorisation is  x2 + 3x -2x - 6 x (x + 3) -2(x + 3) (x-2) ( x + 3)

Q: A health clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. The…

A: Solution

Q: A wet paper pulp is found to contain 72% water. 63% of the original water was removed by drying.…

A: A wet paper pulp contain 72% water. That is, Wet paper percentage=72%=0.72 pounds By drying, the…

Q: A goldsmith mixes 10oz of a 35% gold alloy with 20oz of a 17% gold alloy. What is the percent…

A: We have to find concentration of the resulting alloy if a goldsmith mixes 10oz of a 35% gold alloy…

Q: The amount of caffeine in the bloodstream decreases by 24% every hour. A can of Rock Star energy…

A:

Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.