3. In physics the following formula relates your distance above the ground, d, relative to how long, t, an objec has been in the air: 1 -at? 2 (a) Solve the formula for a, the acceleration due to gravity. d = v,t+ (b) Using your manipulated equation, find the value of a if d = 80, v, = 50 and t = 8. *note: an acceleration towards the ground is negative.

Q: Solve the following linear systems. {2 x₁ − 3x₂ = 1 |2x₁ +4x, = 2 1+ 4x₂ = 0 1 2x₁+3x₂ −ª1 + 6x2

A:

Q: Write a system of linear equations that has the order pair (−3,7) as a solution.

A: Write a system of linear equations that has the order pair  (a,b) is y=(b/a)x

Q: Is (-6, 4) a solution to this system of equations? y = -3x - 14 y = x + 10

A: y = -3x - 14 and y = x + 10 Is ( - 6 , 4) is a solution of the system of equation.

Q: Solve and Graph the solution set of the system.

A: The given inequalities are  x+y≤4y>2x-3

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.